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LT8709 Datasheet Negative Input Synchronous Multi-Topology DC/DC Controller

Manufacturer: Linear Technology (now Analog Devices)

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General Description

n Wide Negative Input Range: –4.5V to –80V n Rail-to-Rail Output Current Monitor and Control n Input Voltage Regulation for High Impedance Inputs n Power Good Indication Pin n MODE Pin for Forced CCM (Continuous Conduction Mode) or Pulse-Skipping/DCM (Discontinuous Conduction Mode) Operation n Switching Frequency Up to 750kHz n Easily Configurable as a Buck, Boost, Buck-Boost, or Inverting Converter with a Single Feedback Pin n Can be Synchronized to an External Clock n High Gain EN/FBIN Pin Accepts Slowly Varying Input Signals n 20-Lead TSSOP Package Applications n High Power Negative Input, Negative Output Power Supplies n High Power Negative Input, Positive Output Power Supplies n Telecom Equipment Power Supplies n Cathodic Protection Power Supplies L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

The LT®8709 is a synchronous PWM controller for negativeto-negative or negative-to-positive DC/DC conversion, with rail-to-rail output current monitor and control.

Overview

LT8709.

Key Features

  • Negative Input Synchronous Multi-Topology DC/DC Controller.

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