https://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-chargerProduct Detail Documentsen-USTelligent Community 12https://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-chargerFri, 05 May 2023 15:58:48 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:37bb5665-eeaf-4e2d-b548-18342f3389dce14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger#commentsCurrent Revision posted to Documents by e14-publisher on 5/5/2023 3:58:48 PM<br /> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6902D, 1A Constant Current Battery Charger</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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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-ISA155V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-9ca0d" 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('9ca0d'));" data-farnell="" data-newark="56Y0879" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA155V1 product evaluation board integrates the L6902D step-down switching regulator with adjustable current limit, together with the external components required for a typical application.</p> <p>The input voltage of the board can range from 8 V up to 25 V due to the rated voltage of the input capacitor and the Schottky rectifier repetitive peak reverse voltage (both 25 V). The external resistor divider (R1 and R2) sets the output voltage of the application board to 3.3 V. A different output voltage can be regulated from 1.235 V up to 10 V, the rated voltage of the output capacitor. A current limit of 1 A is programmed by the 100 m&Omega; sense resistor (Rsense). The inductor saturation current and the forward current of the Schottky rectifier fit the current limit setting.</p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>Up to 1 A output current</li> <li>Operating input voltage from 8 V to 25 V</li> <li>Precise 3.3 V (&plusmn;2%) reference voltage</li> <li>5% output current accuracy</li> <li>Output voltage adjustable from 1.235 V to 34 V</li> <li>250 kHz internally fixed frequency</li> <li>Voltage feedforward</li> <li>Zero load current operation</li> <li>Adjustable current limit</li> <li>Protection against feedback disconnection</li> <li>Thermal shutdown</li> <li>RoHS compliant</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Evaluation Board</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/CD00002179.pdf" target="_blank">L6902 1 A switching regulator with adjustable current limit (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/DM00118902.pdf" target="_blank">DB2340: 1 A constant current battery charger evaluation board based on the L6902D (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-isa155v1_bom.pdf" target="_blank">STEVAL-ISA155V1 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-isa155v1_gerber.zip" target="_blank">STEVAL-ISA155V1 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-isa155v1_schematic.pdf" target="_blank">STEVAL-ISA155V1 schematics (pdf)</a> </div> </div> </div> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2990, "type": "devtool", "part_number": "STEVAL-ISA155V1" };</script> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: L6902D, Constant Current Battery Charger, power_management, buck regulator, stm, stepdown_buck_regulator, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger/revision/3Thu, 16 Dec 2021 23:30:14 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:37bb5665-eeaf-4e2d-b548-18342f3389dce14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger#commentsRevision 3 posted to Documents by e14-publisher on 12/16/2021 11:30:14 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2990, "type": "devtool", "part_number": "STEVAL-ISA155V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6902D, 1A Constant Current Battery Charger</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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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-ISA155V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-89abe" 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('89abe'));" data-farnell="" data-newark="56Y0879" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA155V1 product evaluation board integrates the L6902D step-down switching regulator with adjustable current limit, together with the external components required for a typical application.</p> <p>The input voltage of the board can range from 8 V up to 25 V due to the rated voltage of the input capacitor and the Schottky rectifier repetitive peak reverse voltage (both 25 V). The external resistor divider (R1 and R2) sets the output voltage of the application board to 3.3 V. A different output voltage can be regulated from 1.235 V up to 10 V, the rated voltage of the output capacitor. A current limit of 1 A is programmed by the 100 m&Omega; sense resistor (Rsense). The inductor saturation current and the forward current of the Schottky rectifier fit the current limit setting.</p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>Up to 1 A output current</li> <li>Operating input voltage from 8 V to 25 V</li> <li>Precise 3.3 V (&plusmn;2%) reference voltage</li> <li>5% output current accuracy</li> <li>Output voltage adjustable from 1.235 V to 34 V</li> <li>250 kHz internally fixed frequency</li> <li>Voltage feedforward</li> <li>Zero load current operation</li> <li>Adjustable current limit</li> <li>Protection against feedback disconnection</li> <li>Thermal shutdown</li> <li>RoHS compliant</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Evaluation Board</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/CD00002179.pdf" target="_blank">L6902 1 A switching regulator with adjustable current limit (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/DM00118902.pdf" target="_blank">DB2340: 1 A constant current battery charger evaluation board based on the L6902D (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-isa155v1_bom.pdf" target="_blank">STEVAL-ISA155V1 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-isa155v1_gerber.zip" target="_blank">STEVAL-ISA155V1 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-isa155v1_schematic.pdf" target="_blank">STEVAL-ISA155V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: L6902D, Constant Current Battery Charger, power_management, buck regulator, stm, stepdown_buck_regulator, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger/revision/2Thu, 16 Dec 2021 03:17:39 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:37bb5665-eeaf-4e2d-b548-18342f3389dce14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger#commentsRevision 2 posted to Documents by e14-publisher on 12/16/2021 3:17:39 AM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2990, "type": "devtool", "part_number": "STEVAL-ISA155V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6902D, 1A Constant Current Battery Charger</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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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-ISA155V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-a6168" 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('a6168'));" 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>The STEVAL-ISA155V1 product evaluation board integrates the L6902D step-down switching regulator with adjustable current limit, together with the external components required for a typical application.</p> <p>The input voltage of the board can range from 8 V up to 25 V due to the rated voltage of the input capacitor and the Schottky rectifier repetitive peak reverse voltage (both 25 V). The external resistor divider (R1 and R2) sets the output voltage of the application board to 3.3 V. A different output voltage can be regulated from 1.235 V up to 10 V, the rated voltage of the output capacitor. A current limit of 1 A is programmed by the 100 m&Omega; sense resistor (Rsense). The inductor saturation current and the forward current of the Schottky rectifier fit the current limit setting.</p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>Up to 1 A output current</li> <li>Operating input voltage from 8 V to 25 V</li> <li>Precise 3.3 V (&plusmn;2%) reference voltage</li> <li>5% output current accuracy</li> <li>Output voltage adjustable from 1.235 V to 34 V</li> <li>250 kHz internally fixed frequency</li> <li>Voltage feedforward</li> <li>Zero load current operation</li> <li>Adjustable current limit</li> <li>Protection against feedback disconnection</li> <li>Thermal shutdown</li> <li>RoHS compliant</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Evaluation Board</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/CD00002179.pdf" target="_blank">L6902 1 A switching regulator with adjustable current limit (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/DM00118902.pdf" target="_blank">DB2340: 1 A constant current battery charger evaluation board based on the L6902D (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-isa155v1_bom.pdf" target="_blank">STEVAL-ISA155V1 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-isa155v1_gerber.zip" target="_blank">STEVAL-ISA155V1 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-isa155v1_schematic.pdf" target="_blank">STEVAL-ISA155V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: L6902D, Constant Current Battery Charger, power_management, buck regulator, stm, stepdown_buck_regulator, analog_demo_boards</div> https://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger/revision/1Mon, 18 Oct 2021 20:21:44 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:37bb5665-eeaf-4e2d-b548-18342f3389dce14-publisherhttps://community.element14.com/products/devtools/product-pages/w/documents/22051/evaluation-board-based-on-the-l6902d-1a-constant-current-battery-charger#commentsRevision 1 posted to Documents by e14-publisher on 10/18/2021 8:21:44 PM<br /> <div class="xs-hide"> <script>e14.meta.page.devtools={"id": 2990, "type": "devtool", "part_number": "STEVAL-ISA155V1" };</script> </div> <div id="product-page-content"> <h1 class="xs-mt0 xs-mb2">Evaluation Board based on the L6902D, 1A Constant Current Battery Charger</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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" class="devtool-image-devtool-0 xs-w100 xs-full-height fill-white obj-fit-contain xs-block" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> <img loading="lazy" src="https://community-dc-assets.element14.com/images/devtool/size500/evaluation_board_based_on_the_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" class="devtool-image-devtool-1 xs-w100 xs-full-height fill-white obj-fit-contain xs-hide" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x414_1579630329.png" id="devtool-0" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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_l6902d_1a_constant_current_battery_charger_500x239_1579630329.png" id="devtool-1" class="xs-w100 xs-full-height obj-fit-contain" alt="Evaluation Board based on the L6902D, 1A Constant Current Battery Charger" /> </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-ISA155V1</span></div> </div> <div class="xs-text-right xs-mr2"> <a id="e14-product-link-6b1d2" data-at-areainteracted="rte-content" 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('6b1d2'));" data-farnell="" data-newark="56Y0879" data-comoverride="" data-cmpoverride="" data-cpc="" data-avnetemea="" data-avnetema="" data-avnetasia="" >Buy Now</a> </div> </div> </div> </div> <div class="xs-mt3"> <p>The STEVAL-ISA155V1 product evaluation board integrates the L6902D step-down switching regulator with adjustable current limit, together with the external components required for a typical application.</p> <p>The input voltage of the board can range from 8 V up to 25 V due to the rated voltage of the input capacitor and the Schottky rectifier repetitive peak reverse voltage (both 25 V). The external resistor divider (R1 and R2) sets the output voltage of the application board to 3.3 V. A different output voltage can be regulated from 1.235 V up to 10 V, the rated voltage of the output capacitor. A current limit of 1 A is programmed by the 100 m&Omega; sense resistor (Rsense). The inductor saturation current and the forward current of the Schottky rectifier fit the current limit setting.</p> </div> <h3 class="toc-item xs-pb2 xs-border-bottom">Features</h3> <ul> <li>Up to 1 A output current</li> <li>Operating input voltage from 8 V to 25 V</li> <li>Precise 3.3 V (&plusmn;2%) reference voltage</li> <li>5% output current accuracy</li> <li>Output voltage adjustable from 1.235 V to 34 V</li> <li>250 kHz internally fixed frequency</li> <li>Voltage feedforward</li> <li>Zero load current operation</li> <li>Adjustable current limit</li> <li>Protection against feedback disconnection</li> <li>Thermal shutdown</li> <li>RoHS compliant</li> </ul> <h3 class="toc-item xs-pb2 xs-border-bottom">Ships With</h3> <ul> <li>Evaluation Board</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/CD00002179.pdf" target="_blank">L6902 1 A switching regulator with adjustable current limit (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/DM00118902.pdf" target="_blank">DB2340: 1 A constant current battery charger evaluation board based on the L6902D (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-isa155v1_bom.pdf" target="_blank">STEVAL-ISA155V1 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-isa155v1_gerber.zip" target="_blank">STEVAL-ISA155V1 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-isa155v1_schematic.pdf" target="_blank">STEVAL-ISA155V1 schematics (pdf)</a> </div> </div> </div> <div style="clear:both;"></div> <div style="font-size: 90%;">Tags: L6902D, Constant Current Battery Charger, power_management, buck regulator, stm, stepdown_buck_regulator, analog_demo_boards</div>