The LT3741 uses an average current mode control scheme to maintain inductor current regulation over a wide output voltage range of 0V to VIN-2V. The regulated current is set by an analog voltage on the CTRL pins and an external sense resistor. The LT3741’s unique topology enables it to both source and sink current. The LT3741’s regulated output voltage and overvoltage protection are set with an external voltage divider. Additional features include an accurate external voltage reference, a programmable undervoltage lockout (ULVO) pin and thermal shutdown.
The LT3741EUF is available in a 20-pin 4mm x 4mm QFN package and the LT3741EFE is available in a thermally enhanced TSSOP-20, priced starting at $3.95 and $4.10 each, respectively in 1,000-piece quantities. Extended temperature versions, or “I” Grades, the LT3741IUF and LT3741IFE, are also available. Pricing starts at $4.65 and $4.82 each, respectively in 1,000-piece quantities. All versions are available from stock. For more information, visit www.linear.com.