LM2635 - 5-Bit Programmable Synchronous Buck Regulator Controller

Product Overview

National Semiconductor

Datasheet Details

Part number	LM2635
Manufacturer	National Semiconductor
File Size	288.33 KB
Description	5-Bit Programmable Synchronous Buck Regulator Controller
Datasheet	LM2635 Datasheet
Additional preview pages of the LM2635 datasheet.

Product details

Description

The LM2635 is a high speed controller designed specifically for use in synchronous DC/DC buck converters for the Pentium™ II or Deschutes microprocessor.

Features

as required by Intel VRM specifications. Current limiting is achieved by monitoring the voltage drop across the rDS_ON of the high side MOSFET, which eliminates an expensive current sense resistor. The LM2635 employs a fixed-frequency voltage mode PWM architecture. To provide a faster response to a large and fast load transient, two ultra-fast comparators are built in to monitor the output voltage and override the primary control loop when necessary. The PWM frequency is adjustable from 50 kHz t.

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Published: Mar 22, 2005 |