LM2639 Datasheet (National Semiconductor) - High Frequency Multi-phase PWM Controller

LM2639, High Frequency Multi-phase PWM Controller

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.

Compared to a conventional single-phase supply, an LM2639 based multi-phase supply distributes the thermal and electrica

LM2639 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