FSCQ1465RT

FSCQ-Series Green Mode Fairchild Power Switch (FPSTM)

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FSCQ-Series Green Mode Fairchild Power Switch (FPSTM)

February 2006

FSCQ-Series FSCQ0565RT/FSCQ0765RT/FSCQ0965RT/FSCQ1265RT/ FSCQ1465RT/FSCQ1565RT/FSCQ1565RP Green Mode Fairchild Power Switch (FPSTM)
Features
Optimized for Quasi-Resonant Converter (QRC) Advanced Burst-Mode Operation for under 1W

Description
A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ-Series contains an integrated Pulse Width Modulation (PWM) controller and a SenseFET, and is specifically designed for quasiresonant off-line Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature-compensated precise current sources for a loop compensation, and self protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSCQ-Series can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability. These devices provide a ba
sic platform that is well suited for cost-effective designs of quasi-resonant switching flyback converters.

Standby Power Consumption
Pulse-by-Pulse Current Limit Over Load Protection (OLP) Auto Restart Over Voltage Protection (OVP) Auto Restart Abnormal Over Current Protection (AOCP) Latch Internal Thermal Shutdown (TSD) Latch Under Voltage Lock Out (UVLO) with Hysteresis Low Startup Current (typical: 25 A) Internal High Voltage SenseFET Built-in Soft Start (20ms) Extended Quasi-Resonant Switching

Applications
CTV Audio Amplifier

Related Application Notes
AN4146: Design Guidelines for Quasi-Resonant

Converters Using FSCQ-Series Fairchild Power Switch. AN4140: Transformer Design Consideration for Off-Line Flyback Converters Using Fairchild Power Switch.

Ordering Information
Product Number
FSCQ0565RTYDTU FSCQ0765RTYDTU FSCQ0965RTYDTU FSCQ1265RTYDTU FSCQ1465RTYDTU FSCQ1565RTYDTU FSCQ1565RPVDTU
YDTU: Forming Type VDTU: Forming Type

Package
TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L( Forming) TO-220F-5L (Forming) TO-3PF-7L (Forming)

Marking Code
CQ0565RT CQ0765RT CQ0965RT CQ1265RT CQ1465RT CQ1565RT CQ1565RP

BVdss
650V 650V 650V 650V 650V 650V 650V

Rds(ON) Max.
2.2 1.6 1.2 0.9 0.8 0.7 0.7

2006 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FSCQ-Series Rev. 1.1.2