LT3957IUHE

Description：IC REG BOOST CUK ADJ 5A 36QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:ac0d6055a04f 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：Tube
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)
Grade：-
Qualification：-

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LT3957IUHE

Overview

The LT3957IUHE#PBF is a wide input voltage range, current mode DC/DC converter manufactured by Analog Devices Inc. It features an integrated 40V switch capable of delivering up to 5A of output current. The device supports multiple topologies including Boost, Flyback, SEPIC, and Inverting configurations, allowing for positive or negative output voltages. It operates with an input voltage range from 3V to 40V and includes a shutdown function. The component is housed in a QFN-36 package and is designed for applications requiring flexible power conversion solutions.

Feature Summary

Supports versatile topology configurations including boost, flyback, SEPIC, and inverting converters
Integrates a high-voltage switch rated for 40V operation
Capable of generating both positive and negative output voltages
Includes a dedicated shutdown pin for power management control

Applications

Industrial power supply systems
Automotive electronics
Battery-powered equipment
Telecommunications infrastructure

Procurement Notes

Verify the complete part number, specifically the suffix #PBF, to ensure compliance with RoHS standards and lead-free manufacturing requirements. Confirm that the specific temperature grade and package variant match the design specifications. Cross-reference the manufacturer's latest documentation to validate availability status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when a single IC must support multiple converter topologies such as boost or SEPIC. Ensure the required output current does not exceed the internal switch limits. Verify that the input voltage range aligns with the system's power source. Consider thermal management requirements due to the high current capabilities and the specific QFN-36 package footprint constraints.

Part Context

This part belongs to the LT3957 series of wide input voltage range converters. It is distinct from other Linear Technology parts like the LT3958 or LT3757 controllers which may lack the integrated switch. The series is designed for applications needing flexible voltage conversion without external switching components.