UC2578 - Unitrode

UC2578 Buck Pulse Width Modulator Stepdown Voltage Regulator

The UC3578 is a PWM controller with an integrated high side floating gate driver. It is used in buck step down converters and regulates a positive output voltage. Intended to be used in a distributed power system, the IC allows operation from 14V to 72V input voltage which range includes the prevalent telecomm bus voltages. The output duty cycle of the UC357.

Features

• Provides Simple Single Inductor Buck PWM Step-Down Voltage Regulation
• Drives External High Side NMOS Switch
• 14V to 72V Input Voltage Operating Range
• Contains 100kHz Internal Oscillator, 2V Reference and UVLO
• Soft Start on Power Up
• Overcurrent Shutdown Followed by Soft Start DESCRIPTION The UC3578 is a PWM controller with an integrated high side floating gate driver. It is used in buck step down converters and regulates a positive output voltage. Intended to be used in a distributed power system, the IC allows operation from 14V to 72V input voltage which range includes the prevale.