LM2645 - Advanced Two-Phase Switching Controller

Product Overview

National Semiconductor

Datasheet Details

Part number	LM2645
Manufacturer	National Semiconductor
File Size	497.93 KB
Description	Advanced Two-Phase Switching Controller
Datasheet	LM2645 Datasheet
Additional preview pages of the LM2645 datasheet.

Product details

Description

The LM2645 is a feature-rich IC that combines two current mode synchronous buck regulator controllers, an adjustable linear regulator controller and a fixed 3.3V standby output rail.

Features

a fixed 5V output, and the second switching controller controller (Channel 2) features a fixed 3.3V output. Both channels can also be independently adjusted from 1.3 to 5.5V. The adjustable linear regulator can be adjusted from 3.3V to 15V. An internal 5V rail is also available externally for driving bootstrap circuitry. This rail also serves as the input for an internal LDO that provides the fixed 3.3V/50mA output rail. Current-mode feedback control assures excellent line and load regulation an.

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Published: Mar 22, 2005 |