LT3741EFE#TRPBF

LT3741 is a fixed frequency synchronous step-down DC/DC controller. It is designed to accurately regulate the output current at upto 20A. The average current mode controller will 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 regulated voltage and overvoltage protection are set with a voltage divider from the output to the FB pin. Soft-Start is provided to allow a gradual increase in the regulated current during start-up. The switching frequency is programmable from 200KHz to 1MHz through an external resistor on the RT pin or through the use of the SYNC pin and an external clock signal. It is widely used in application such as general purpose industrial, super-cap charging, applications needing extreme short-circuit protection and/or accurate output current limit, constant current or constant voltage source etc.

• Voltage regulation accuracy is ±1.5%
• Current regulation accuracy is ±6%
• Input voltage range is 6V to 36V
• Average current mode control
• Shutdown current is <lt/>1µA maximum
• Capable of sourcing and sinking current
• Additional pin for thermal control of load current, upto 94% efficiency
• Input bias current is 850nA typical
• Operating temperature is -40°C to 125°C
• Packaging style is 20-lead plastic TSSOP

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