LT3957AIUHE#TRPBF

$4.33

Description：IC REG BOOST CUK ADJ 5A 36QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:ad24f398bfeb Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BOOST CUK ADJ 5A 36QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive or Negative
Topology：Boost, Cuk, Flyback, SEPIC
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3V
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.6V
Voltage - Output (Max)：40V (Switch)
Current - Output：5A (Switch)
Frequency - Switching：100kHz ~ 1MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：36-WFQFN, 28 Leads, Exposed Pad
Supplier Device Package：36-QFN (5x6)

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LT3957AIUHE#TRPBF

Overview

The LT3957AIUHE#TRPBF is a wide input range, current mode DC/DC converter manufactured by Analog Devices Inc. It features an internal low-side N-channel power MOSFET rated for 40V at 5A, driven by an internal regulated 5.2V supply. The device supports boost, flyback, SEPIC, and inverting topologies with a fixed switching frequency of 1MHz. It operates within an input voltage range of 3V to 40V, delivering up to 5A output current. The component functions reliably across temperatures from -40°C to +125°C and is housed in a QFN-36 package.

Feature Summary

Configurable as a boost, flyback, SEPIC, or inverting converter
Internal 5A, 40V low-side N-channel power MOSFET
Fixed frequency, current-mode architecture for stable operation

Applications

Industrial control systems requiring versatile DC/DC conversion
Automotive electronics operating on varying bus voltages
Telecommunications infrastructure power supplies
Battery-powered equipment needing step-up or inverted voltage rails

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the 'A' grade designation meets your required temperature and performance specifications. Ensure compatibility with the QFN-36 footprint during PCB layout. Check official distributor channels for current availability status as supply may be limited.

Selection Notes

Select this part for designs requiring a single-chip solution for multiple converter topologies. The integrated 5A switch eliminates external MOSFET selection. Verify that the 1MHz switching frequency aligns with your EMI constraints and inductor size requirements. Ensure the input voltage range covers your minimum and maximum source conditions.

Part Context

This component belongs to the LT3957 family of high-performance DC/DC converters. It shares architectural similarities with other members like the LT3958 but offers distinct voltage and current ratings. The series is designed for applications demanding high efficiency and compact form factors in power management solutions.