LT3501IFE#PBF - 

DC/DC Switching Regulator, Buck, 2 Output, 3.1 V to 25 V in, 22.5 V/3 A out, 1.8 MHz, TSSOP-20

LT3501IFE#PBF - DC/DC Switching Regulator, Buck, 2 Output, 3.1 V to 25 V in, 22.5 V/3 A out, 1.8 MHz, TSSOP-20

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Product Overview

The LT3501IFE#PBF is a dual-current mode PWM step-down DC/DC Converter with two internal 3.5A switches. Independent input voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking/sequencing requirements. Both converters are synchronized to either a common external clock input or a resistor programmable fixed 250kHz to 1.5MHz internal oscillator. At all frequencies, a 180° phase relationship between channels is maintained, reducing voltage ripple and component size. Programmable frequency allows for optimization between efficiency and external component size. Minimum input-to-output voltage ratios are improved by allowing the switch to stay on through multiple clock cycles, only switching off when the boost capacitor needs recharging, resulting in ~95% maximum duty cycle. Each output can be independently disabled using its own soft-start pin or by using the SHDN pin the entire part can be placed in a low quiescent current shutdown mode.
  • Independent supply to each regulator
  • Antiphase switching
  • Outputs can be paralleled
  • Independent, sequential, ratiometric or absolute tracking between outputs
  • Independent soft-start and power good pins
  • Enhanced short-circuit protection
  • 95% Maximum duty cycle low dropout
  • <10µA Low shutdown current
  • 2 Switching regulators with 3A output capability


Power Management

Product Information

2 Output
Buck (Step Down)
Cut Tape
MSL 1 - Unlimited
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