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