UC3873 Datasheet LOW COST POWER-SAVING MODE PWM CONTROLLER

Manufacturer: Unisonic Technologies

UC3873 low cost power-saving mode pwm controller by Unisonic Technologies - Datasheet Preview

Datasheet Details

Part number	UC3873
Manufacturer	Unisonic Technologies
File Size	303.89 KB
Description	LOW COST POWER-SAVING MODE PWM CONTROLLER
Datasheet	UC3873 Datasheet

General Description

The UC3873 is a high performance current mode PWM controller ideally suited for low standby power.

Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power.

At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition.

Overview

UNISONIC TECHNOLOGIES CO., LTD UC3873 LINEAR INTEGRATED CIRCUIT LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS.

Key Features

S.
UTC proprietary frequency hopping technology for Improved EMI performance.
Power-saving mode for high light-load and standby efficiency.
Soft Start.
Dynamic peak current limiting for constant output power.
Built-in synchronized slope compensation.
OLP, OVP and VDD clamp for higher security.
Programming OTP for higher security.
Fixed switch frequency 65kHz.
Gate output voltage clamped at 15V.
Low start-up current.
Cycle-by-cycle Current.

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