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LT3501EFE#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

LT3501EFE#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

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
LT3501EFE#PBF
Order Code:
1663567
Technical Datasheet:
(EN)
See all Technical Docs

Product Overview

The LT3501EFE#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

Applications

Power Management

Product Information

:
3.1V
:
25V
:
2 Output
:
TSSOP
:
20Pins
:
3A
:
3A
:
22.5V
:
22.5V
:
Adjustable
:
1.8MHz
:
Buck (Step Down)
:
125°C
:
Cut Tape
:
-
:
MSL 1 - Unlimited
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