LM5642 - High Voltage/ Dual Synchronous Buck Converter

National Semiconductor

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Datasheet Details

Part number: LM5642
Manufacturer: National Semiconductor
File Size: 667.79 KB
Datasheet: LM5642_NationalSemiconductor.pdf
Description: High Voltage/ Dual Synchronous Buck Converter

LM5642 Product details

Description

The LM5642 consists of two current mode synchronous buck regulator controllers operating 180˚ out of phase with each other at a normal switching frequency of 200kHz.

Features

analog soft-start circuitry that is independent of the output load and output capacitance making the soft-start behavior more predictable and controllable than traditional soft-start circuits. Over-voltage protection is available for both outputs. A UVDelay pin is also available to allow delayed shut off time for the IC during an output under-voltage event. Features n Two synchronous buck regulators n 180˚ out of phase operation n Synchronizable switching frequency from 150kHz to 250kHz n 4.5V.

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Published: Mar 22, 2005 |