Datasheet4U Logo Datasheet4U.com

SG1577 - Dual Synchronous DC/DC Controller

General Description

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%.

Key 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 Low as 0.7V Internal Error Amplifier Reference Voltage: 0.7V±1.5% Two Soft-Start / EN Functions Programmable Over-Current Protection (OCP) 30V HIGH Voltage Pin for Bootstrap Voltage Output Over-Voltage.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
SG150 Gas Discharge Tubes Littelfuse
SG1501A DUAL VOLTAGE TRACKING REGULATOR Silicon General
SG1502 Adjustable Dual Voltage Regulator Silicon General
SG1503 PRECISION 2.5-VOLT REFERENCE LINFINITY
SG1524 REGULATING PULSE WIDTH MODULATOR LINFINITY

Other Datasheets by Fairchild (onsemi)

Part Number Description
SG1577A Dual Synchronous DC/DC Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
SG1577 — Dual Synchronous DC/DC Controller August 2010 SG1577 Dual Synchronous DC/DC Controller Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ 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 Low as 0.7V Internal Error Amplifier Reference Voltage: 0.7V±1.5% Two Soft-Start / EN Functions Programmable Over-Current Protection (OCP) 30V HIGH Voltage Pin for Bootstrap Voltage Output Over-Voltage Protection (OVP) SOP and DIP 20-pin Description 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.