LINEAR TECHNOLOGY LT3685 Manual

The LT3685 is an adjustable frequency (200kHz to 2.4MHz) monolithic step-down switching regulator that accepts input voltages up to 38V operating and 60V maximum. It features an internal overvoltage protection circuit that turns off the power switch when VIN is above 38V typical (36V minimum) which then allows the part to safely withstand 60V transients. Current mode topology is used for fast transient response and good loop stability. The high operating frequency of the LT3685 allows the use of small, low cost inductors and ceramic capacitors resulting in low output ripple while keeping total solution size to a minimum. The low current shutdown mode reduces input supply current to less than 1μA while a resistor and capacitor on the RUN/SS pin provide a controlled output voltage ramp (soft-start). A power good flag signals when VOUT reaches 86% of the programmed output voltage. The LT3685 is available in 10-Pin MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance.


Brand: LINEAR

File format: PDF

Size: 302 KB

MD5 Checksum: 6EC0E46E73D115443D535600A2CFF329

Publication date: 09 April, 2012

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