SG1577 Datasheet - Fairchild Semiconductor

SG1577 Dual Synchronous DC/DC Controller

The SG1577 is a high-efficiency, voltage-mode, dualchannel, synchronous DC/DC PWM controller for two independent outputs. The two channels are operated out of phase. The internal reference voltage is trimmed to 0.7V±1.5%. It is connected to the error amplifier’s positive terminal for voltage feedbac.

SG1577 Features

* Integrated Two Sets of MOSFET Drivers Two Independent PWM Controllers Constant Frequency Operation: Free-running Fixed Frequency Oscillator Programmable: 60kHz to 320kHz Wide Range Input Supply Voltage: 8~15V Programmable Output as Lo

SG1577_FairchildSemiconductor.pdf