LT3757IDD

Description：IC REG CTRLR MULT TOPOLOGY 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:c17076f46b69 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR MULT TOPOLOGY 10DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive and Negative
Topology：Boost, Flyback, SEPIC
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：2.9V ~ 40V
Frequency - Switching：100kHz ~ 1MHz
Duty Cycle (Max)：-
Synchronous Rectifier：No
Clock Sync：Yes
Serial Interfaces：-
Control Features：Enable, Frequency Control, Soft Start
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-DFN (3x3)
Grade：-
Qualification：-

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LT3757IDD

Overview

The LT3757IDD is a wide input range, current mode DC/DC controller capable of generating positive or negative output voltages. It supports Boost, Flyback, SEPIC, and Inverting topologies with an input voltage range of 2.9V to 40V. The device features a programmable switching frequency from 100kHz to 1MHz and includes clock synchronization. It integrates a 7.2V LDO for driving external N-channel MOSFETs and offers protection via output overvoltage, overcurrent, and frequency foldback. Packaged in a 10-DFN (3x3) case, it operates between -40°C and +125°C.

Feature Summary

Supports multiple converter topologies including Boost, Flyback, SEPIC, and Inverting configurations.
Generates either positive or negative output voltages through a single feedback pin.
Integrates a 7.2V low dropout regulator to drive external N-channel power MOSFETs.
Provides comprehensive protection features including output overvoltage, overcurrent, and frequency foldback.

Applications

Industrial equipment power management
Automotive electronics systems
Communication base station power supplies
Battery-powered system applications

Procurement Notes

Verify the specific suffix 'IDD' against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure compatibility with required topology and input voltage ranges. Check for RoHS compliance status and lead time constraints as availability may vary by region. Confirm that the 10-DFN footprint matches the design layout requirements.

Selection Notes

Select this component when flexible topology support and wide input voltage are required. Consider the integrated LDO for simplified gate drive circuits. Evaluate the need for clock synchronization if operating in multi-controller environments. Verify thermal performance within the specified junction temperature range for the intended application environment.

Part Context

The LT3757 series represents a family of current mode DC/DC controllers designed by Analog Devices (formerly Linear Technology). The LT3757IDD variant specifically denotes the industrial temperature grade version housed in a 10-pin DFN package. This part is part of a broader lineup that includes variants like the LT3757A, offering flexibility for various power conversion needs across different industries.