LM2645 - Advanced Two-Phase Switching Controller

National Semiconductor

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Datasheet Details

Part number: LM2645
Manufacturer: National Semiconductor
File Size: 497.93 KB
Datasheet: LM2645_NationalSemiconductor.pdf
Description: Advanced Two-Phase Switching Controller

LM2645 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 |