UC3874-1 Datasheet Step-down (Buck) Controllers

Manufacturer: Unitrode

UC3874-1 step-down (buck) controllers by Unitrode - Datasheet Preview

Datasheet Details

Part number	UC3874-1
Manufacturer	Unitrode
File Size	392.03 KB
Description	Step-down (Buck) Controllers
Datasheet	UC3874-1 Datasheet

General Description

The UC3874 family of synchronous step-down (Buck) regulators provides high efficiency power conversion from an input voltage range of 4.5 to 36 volts.

The UC3874 is tailored for battery powered applications such as laptop computers, consumer products, communications systems, and aerospace which demand high performance and long battery life.

The synchronous regulator replaces the catch diode in the standard buck regulator with a low Rds(on) N-channel MOSFET switch allowing for significant efficiency improvements.

Overview

UC1874-1,-2 UC2874-1,-2 UC3874-1,-2 High Efficiency, Synchronous, Step-down (Buck).

Key Features

Operation to 36V Input Voltage.
Fixed Frequency Average Current Mode Control.
Standby Mode for Improved Efficiency at Light Load.
Drives External N-Channel MOSFETs for Highest Efficiency.
Sleep Mode Current < 50mA.
Complementary 1 Amp Outputs with Regulated Gate Drive Voltage.
LDO (Low Drop Out) Virtual 100% Duty Cycle Operation.
Non-Overlapping Gate Drives.

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