LM2639 - High Frequency Multi-phase PWM Controller

National Semiconductor

The LM2639 by National Semiconductor is a High Frequency Multi-phase PWM Controller. Below is the official datasheet preview.

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LM2639 High Frequency Multi-phase PWM Controller by National Semiconductor - Datasheet Preview — Official preview page of the **LM2639** High Frequency Multi-phase PWM Controller datasheet (National Semiconductor).

Datasheet Details

Part number	LM2639
Manufacturer	National Semiconductor
File Size	151.91 KB
Description	High Frequency Multi-phase PWM Controller
Datasheet	LM2639_NationalSemiconductor.pdf
Additional preview pages of the LM2639 datasheet.

LM2639 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 |