LM2639 High Frequency Multi-phase PWM Controller

National Semiconductor

Description

LM2639 5-Bit Programmable, High Frequency Multi-phase PWM Controller February 2000 LM2639 5-Bit Programmable, High Frequency Multi-phase PWM Control.
The LM2639 provides an attractive solution for power supplies of high power microprocessors (such as Pentium II™, M II™, K6™-2, K6™-3, etc.

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Datasheet Specifications

Part number: LM2639
Manufacturer: National Semiconductor
File Size: 151.91 KB
Datasheet: LM2639_NationalSemiconductor.pdf
Description: High Frequency Multi-phase PWM Controller

Features

* n n n n n n n n n n n Ultra fast load transient response Enables all surface-mount-design Selectable 2, 3, 4 phase operation Clock frequency from 40 kHz to 10 MHz Precision load current sharing 5-bit programmable from 3.5V to 1.3V VID code compatible to VRM 8.X specification Output voltage is 2.0V f

Applications

* n Servers and workstations n High current, ultra-fast transient microprocessors Pin Configuration 24-Pin Plastic SOIC DS101143-1 Top View See NS Package Number M24B M II™ is a trademark of Cyrix Corporation a wholly owned subsidiary of National Semiconductor Corporation. Pentium II™ is a trademar

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LM2639 High Frequency Multi-phase PWM Controller National Semiconductor

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