UC3572 Datasheet Negative Output Flyback Pulse Width Modulator

Manufacturer: Unitrode

Overview: Negative Output Flyback Pulse Width Modulator UC1572 UC2572 UC3572.

Datasheet Details

Part number	UC3572
Manufacturer	Unitrode
File Size	283.91 KB
Description	Negative Output Flyback Pulse Width Modulator
Datasheet	UC3572-Unitrode.pdf

General Description

The UC3572 is a negative output flyback pulse width modulator which converts a positive input voltage to a regulated negative output voltage.

The chip is optimized for use in a single inductor negative flyback switching converter employing an external PMOS switch.

The block diagram consists of a precision reference, an error amplifier configured for voltage mode operation, an oscillator, a PWM comparator with latching logic, and a 0.5A peak gate driver.

Key Features

Simple Single Inductor Flyback PWM for Negative Voltage Generation.
Drives External PMOS Switch.
Contains UVLO Circuit.
Includes Pulse-by-Pulse Current Limit.
Low 50µA Sleep Mode Current.

UC3572 Distributor

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