https://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulatorProduct Detail Documentsen-USTelligent Community 12https://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulatorFri, 05 May 2023 15:57:28 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9520aa2f-d79f-486a-be82-ff602fbc2cd6e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator#commentsCurrent Revision posted to Documents by e14-publisher on 5/5/2023 3:57:28 PM<br /> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA159V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-fd938" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2475473&nsku=49Y1252&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('fd938'));" data-farnell="2475473" data-newark="49Y1252" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p><span>The STEVAL-ISA159V1 product evaluation board is based on L6984, a high-efficiency monolithic synchronous step-down regulator, capable of delivering up to 400 mA of DC current. The fixed 3.3 V output requires no external resistor divider. </span></p> <p><span>The Low Consumption Mode (LCM) is designed for eco-friendly home appliances and automotive applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The Low Noise Mode (LNM) makes the switching frequency nearly constant over the load current range, serving low noise application specifications such as audio and sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. </span></p> <p><span>The synchronous rectification, designed for high efficiency at medium-heavy load, and the high switching frequency capability ensure a compact application size. Pulse-by-pulse current sensing on the low-side power element implements effective constant current protection.</span></p> <p><span><span><strong>Applications:</strong> Home appliances, factory and building automation. </span></span></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>400 mA DC output current</li> <li>4.5 V to 36 V operating input voltage</li> <li>Synchronous rectification</li> <li>Low consumption mode or low noise mode</li> <li>100 &micro;A I_Q&nbsp;at light load (LCM V_OUT&nbsp;= 3.3 V)</li> <li>13 &micro;A I_Q-SHTDWN</li> <li>Adjustable f_SW&nbsp;(250 kHz - 600 kHz)</li> <li>Output voltage adjustable from 0.9 V</li> <li>No resistor divider required for 3.3 V V_OUT</li> <li>V_BIAS&nbsp;maximizes efficiency at light load</li> <li>350 mA valley current limit</li> <li>Constant on-time control scheme</li> <li>PGOOD open collector</li> <li>Thermal shutdown</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li><span>Evaluation Module <br /></span></li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00113498.pdf" target="_blank">A6986 - 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00135211.pdf" target="_blank">High efficiency synchronous step-down regulator based on the L6984 (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa159v1_bom.pdf" target="_blank">STEVAL-ISA159V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa159v1_gerber.zip" target="_blank">STEVAL-ISA159V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa159v1_schematic.pdf" target="_blank">STEVAL-ISA159V1 schematics (pdf)</a> </div> </div> </div> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2625, "type": "devtool", "part_number": "STEVAL-ISA159V1" };</script> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, L6984, synchronous step-down, stm, synchronous_buck_converter, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator/revision/3Thu, 16 Dec 2021 23:29:22 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9520aa2f-d79f-486a-be82-ff602fbc2cd6e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator#commentsRevision 3 posted to Documents by e14-publisher on 12/16/2021 11:29:22 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2625, "type": "devtool", "part_number": "STEVAL-ISA159V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA159V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-cd7b2" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2475473&nsku=49Y1252&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('cd7b2'));" data-farnell="2475473" data-newark="49Y1252" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p><span>The STEVAL-ISA159V1 product evaluation board is based on L6984, a high-efficiency monolithic synchronous step-down regulator, capable of delivering up to 400 mA of DC current. The fixed 3.3 V output requires no external resistor divider. </span></p> <p><span>The Low Consumption Mode (LCM) is designed for eco-friendly home appliances and automotive applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The Low Noise Mode (LNM) makes the switching frequency nearly constant over the load current range, serving low noise application specifications such as audio and sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. </span></p> <p><span>The synchronous rectification, designed for high efficiency at medium-heavy load, and the high switching frequency capability ensure a compact application size. Pulse-by-pulse current sensing on the low-side power element implements effective constant current protection.</span></p> <p><span><span><strong>Applications:</strong> Home appliances, factory and building automation. </span></span></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>400 mA DC output current</li> <li>4.5 V to 36 V operating input voltage</li> <li>Synchronous rectification</li> <li>Low consumption mode or low noise mode</li> <li>100 &micro;A I_Q&nbsp;at light load (LCM V_OUT&nbsp;= 3.3 V)</li> <li>13 &micro;A I_Q-SHTDWN</li> <li>Adjustable f_SW&nbsp;(250 kHz - 600 kHz)</li> <li>Output voltage adjustable from 0.9 V</li> <li>No resistor divider required for 3.3 V V_OUT</li> <li>V_BIAS&nbsp;maximizes efficiency at light load</li> <li>350 mA valley current limit</li> <li>Constant on-time control scheme</li> <li>PGOOD open collector</li> <li>Thermal shutdown</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li><span>Evaluation Module <br /></span></li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00113498.pdf" target="_blank">A6986 - 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00135211.pdf" target="_blank">High efficiency synchronous step-down regulator based on the L6984 (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa159v1_bom.pdf" target="_blank">STEVAL-ISA159V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa159v1_gerber.zip" target="_blank">STEVAL-ISA159V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa159v1_schematic.pdf" target="_blank">STEVAL-ISA159V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, L6984, synchronous step-down, stm, synchronous_buck_converter, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator/revision/2Thu, 16 Dec 2021 03:16:38 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9520aa2f-d79f-486a-be82-ff602fbc2cd6e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator#commentsRevision 2 posted to Documents by e14-publisher on 12/16/2021 3:16:38 AM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2625, "type": "devtool", "part_number": "STEVAL-ISA159V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA159V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-68e11" data-at-areainteracted="design-center" data-at-type="click" data-at-link-type="button" href="javascript:void(0)" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('68e11'));" data-farnell="" data-newark="" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p><span>The STEVAL-ISA159V1 product evaluation board is based on L6984, a high-efficiency monolithic synchronous step-down regulator, capable of delivering up to 400 mA of DC current. The fixed 3.3 V output requires no external resistor divider. </span></p> <p><span>The Low Consumption Mode (LCM) is designed for eco-friendly home appliances and automotive applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The Low Noise Mode (LNM) makes the switching frequency nearly constant over the load current range, serving low noise application specifications such as audio and sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. </span></p> <p><span>The synchronous rectification, designed for high efficiency at medium-heavy load, and the high switching frequency capability ensure a compact application size. Pulse-by-pulse current sensing on the low-side power element implements effective constant current protection.</span></p> <p><span><span><strong>Applications:</strong> Home appliances, factory and building automation. </span></span></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>400 mA DC output current</li> <li>4.5 V to 36 V operating input voltage</li> <li>Synchronous rectification</li> <li>Low consumption mode or low noise mode</li> <li>100 &micro;A I_Q&nbsp;at light load (LCM V_OUT&nbsp;= 3.3 V)</li> <li>13 &micro;A I_Q-SHTDWN</li> <li>Adjustable f_SW&nbsp;(250 kHz - 600 kHz)</li> <li>Output voltage adjustable from 0.9 V</li> <li>No resistor divider required for 3.3 V V_OUT</li> <li>V_BIAS&nbsp;maximizes efficiency at light load</li> <li>350 mA valley current limit</li> <li>Constant on-time control scheme</li> <li>PGOOD open collector</li> <li>Thermal shutdown</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li><span>Evaluation Module <br /></span></li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00113498.pdf" target="_blank">A6986 - 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00135211.pdf" target="_blank">High efficiency synchronous step-down regulator based on the L6984 (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa159v1_bom.pdf" target="_blank">STEVAL-ISA159V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa159v1_gerber.zip" target="_blank">STEVAL-ISA159V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa159v1_schematic.pdf" target="_blank">STEVAL-ISA159V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, L6984, synchronous step-down, stm, synchronous_buck_converter, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator/revision/1Mon, 18 Oct 2021 20:21:03 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9520aa2f-d79f-486a-be82-ff602fbc2cd6e14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/21973/evaluation-board-based-on-the-l6984---high-efficiency-synchronous-step-down-regulator#commentsRevision 1 posted to Documents by e14-publisher on 10/18/2021 8:21:03 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2625, "type": "devtool", "part_number": "STEVAL-ISA159V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator</h1> <div class="xs-mb3"><span class="bold xs-mr1">Manufactured By:</span>ST Microelectronics</div> <div class="xs-flex md-flex-row xs-flex-column"> <div class="md-w40 xs-w100"> <div id="devtool-primary-image" class="devtool-primary-image-container fill-white"> <img src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="xs-flex xs-flex-wrap xs-mt2"> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x500_1579630284.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> <div class="devtool-thumbnail fill-white xs-border-lighter txt-center xs-mr1 xs-mb2"> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6984__high_efficiency_synchronous_stepdown_regulator_500x216_1579630284.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6984 - High Efficiency Synchronous Step-Down Regulator" /> </div> </div> </div> <div class="md-w60 md-pl4 md-pl4 md-pt0 xs-w100 xs-pl0 xs-pl0 xs-pt2"> <div class="xs-flex xs-flex-justify-space-between xs-flex-align-center xs-border-lighter fill-white xs-p2"> <div class="xs-mt1 xs-mb1"> <div class="xs-text-5"><span class="bold xs-mr1">Part Number:</span><span id="part-number-value">STEVAL-ISA159V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-aa18b" data-at-areainteracted="rte-content" data-at-type="click" data-at-link-type="button" href="https://referral.element14.com/OrderCodeView?fsku=2475473&nsku=49Y1252&COM=e14c-noscript&CMP=e14c-noscript&osetc=e14-noscript-tracking-loss" data-at-label="PRODUCT_POPUP_OPEN"class="e14-embedded e14_shopping-cart-far e14-button" onclick="event.preventDefault();e14.func.displayProduct(e14.meta.user.country, this, 'embedded-link', e14.func.getProductLinkJSON('aa18b'));" data-farnell="2475473" data-newark="49Y1252" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p><span>The STEVAL-ISA159V1 product evaluation board is based on L6984, a high-efficiency monolithic synchronous step-down regulator, capable of delivering up to 400 mA of DC current. The fixed 3.3 V output requires no external resistor divider. </span></p> <p><span>The Low Consumption Mode (LCM) is designed for eco-friendly home appliances and automotive applications active during car parking, so it maximizes the efficiency at light load with controlled output voltage ripple. The Low Noise Mode (LNM) makes the switching frequency nearly constant over the load current range, serving low noise application specifications such as audio and sensors. The PGOOD open collector output can implement output voltage sequencing during the power-up phase. </span></p> <p><span>The synchronous rectification, designed for high efficiency at medium-heavy load, and the high switching frequency capability ensure a compact application size. Pulse-by-pulse current sensing on the low-side power element implements effective constant current protection.</span></p> <p><span><span><strong>Applications:</strong> Home appliances, factory and building automation. </span></span></p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>400 mA DC output current</li> <li>4.5 V to 36 V operating input voltage</li> <li>Synchronous rectification</li> <li>Low consumption mode or low noise mode</li> <li>100 &micro;A I_Q&nbsp;at light load (LCM V_OUT&nbsp;= 3.3 V)</li> <li>13 &micro;A I_Q-SHTDWN</li> <li>Adjustable f_SW&nbsp;(250 kHz - 600 kHz)</li> <li>Output voltage adjustable from 0.9 V</li> <li>No resistor divider required for 3.3 V V_OUT</li> <li>V_BIAS&nbsp;maximizes efficiency at light load</li> <li>350 mA valley current limit</li> <li>Constant on-time control scheme</li> <li>PGOOD open collector</li> <li>Thermal shutdown</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li><span>Evaluation Module <br /></span></li> </ul> <div id="devtool-required-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Required Tools</h3> <div id="devtool-required-devtools-content"></div> </div> <div id="devtool-accessory-devtools-section" class="xs-hide"> <h3 class="toc-item xs-pb2 xs-mb1 xs-border-bottom">Accessory Tools</h3> <div id="devtool-accessory-devtools-content"></div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Documents</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Data Sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00113498.pdf" target="_blank">A6986 - 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">License Agreement</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/legal/legal_agreement/license_agreement/EvaluationProductLicenseAgreement.pdf" target="_blank">Evaluation products license agreement (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Product Brief/Fact sheet</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00135211.pdf" target="_blank">High efficiency synchronous step-down regulator based on the L6984 (pdf)</a> </div> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Downloads</h3> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Bill of Materials</h4> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/document/bill_of_materials/steval-isa159v1_bom.pdf" target="_blank">STEVAL-ISA159V1 BOM (pdf)</a> </div> </div> <div class="xs-px2"> <h4 class="xs-pb2 xs-border-bottom">Schematics/Layout Files</h4> <div class="attachment "> <i class="fal fa-file-archive"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/board_manufacturing_specification/steval-isa159v1_gerber.zip" target="_blank">STEVAL-ISA159V1 gerber files (zip)</a> </div> <div class="attachment xs-mb3"> <i class="fal fa-file-pdf"></i> <a href="http://www.st.com/st-web-ui/static/active/en/resource/technical/layouts_and_diagrams/schematic_pack/steval-isa159v1_schematic.pdf" target="_blank">STEVAL-ISA159V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: power_management, L6984, synchronous step-down, stm, synchronous_buck_converter, analog_demo_boards</div>