LM2657 - Dual Synchronous Buck Regulator Controller

Texas Instruments

Datasheet Details

Part number	LM2657
Manufacturer	Texas Instruments
File Size	760.06 KB
Description	Dual Synchronous Buck Regulator Controller
Datasheet	LM2657 Datasheet

General Description

The LM2657 is an adjustable 200kHz-500kHz dual channel voltage-mode controlled high-speed synchronous buck regulator controller ideally suited for high current applications.

The LM2657 requires only N-channel FETs for both the upper and lower positions of each stage.

Overview

LM2657 www.ti.com SNVS342B – JANUARY 2005 – REVISED MARCH 2013 LM2657 Dual Synchronous Buck Regulator Controller Check for Samples:.

Key Features

1.
2 Input Voltage Range from 4.5V to 28V.
Synchronous Dual-Channel Interleaved Switching.
Forced-PWM or Pulse-Skip Modes.
Lossless Bottom-Side FET Current Sensing.
Adaptive Duty Cycle Clamp.
High Current N-Channel FET Drivers.
Low Shutdown Supply Current.
Reference Voltage Accurate to within ±1.5%.
Output Voltage Adjustable Down to 0.6V.
Power Good Flag and Chip Enable.
Under-Voltage Lockout.

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