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TPS40100 - MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER

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General Description

The TPS40100 is a mid voltage, wide-input (between 4.5 V and 18 V), synchronous, step-down controller.

The TPS40100 offers programmable closed loop soft-start, programmable UVLO (with programmable hysteresis), programmable inductor sensed current limit and can be synchronized to other timebases.

The TPS40100 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFET.

Overview

TPS40100 www.ti.com SLUS601 – MAY 2005 MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER WITH ADVANCED SEQUENCING AND OUTPUT.

Key Features

  • Operation over 4.5 V to 18 V Input Range.
  • Adjustable Frequency (Between 100 kHz and 600 kHz) Current Feedback Control.
  • Output Voltage Range From 0.7 V to 5.5 V.
  • Simultaneous, Ratiometric and Sequential Startup Sequencing.
  • Adaptive Gate Drive.
  • Remote Sensing (Via Separate GND/PGND).
  • Internal Gate Drivers for N-channel MOSFETs.
  • Internal 5-V Regulator.
  • 24-Pin QFN Package.
  • Thermal Shutdown.
  • Programmab.

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