LM2639 - High Frequency Multi-phase PWM Controller

Product Overview

National Semiconductor

Datasheet Details

Part number	LM2639
Manufacturer	National Semiconductor
File Size	151.91 KB
Description	High Frequency Multi-phase PWM Controller
Datasheet	LM2639 Datasheet
Additional preview pages of the LM2639 datasheet.

Product details

Description

The LM2639 provides an attractive solution for power supplies of high power microprocessors (such as Pentium II™, M II™, K6™-2, K6™-3, etc.) exhibiting ultra fast load transients.

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 for VID code 11111 Selectable internal or external clock Digital 16-step soft start Input under-voltage lock-out, over-current protection.

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Published: Mar 22, 2005 |