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UC3572

Part Number	UC3572
Manufacturer	Unitrode
Description	Negative Output Flyback Pulse Width Modulator
Published	Oct 1, 2019
Detailed Description	Negative Output Flyback Pulse Width Modulator UC1572 UC2572 UC3572 FEATURES • Simple Single Inductor Flyback PWM for N...
Datasheet	UC3572 PDF File

Overview

Negative Output Flyback Pulse Width Modulator UC1572 UC2572 UC3572 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 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 lat...

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