DATA SHEET www.onsemi.com Green Mode Fairchild Power Switch (FPS ) FSCQ Series FSCQ0765RT / FSCQ0965RT / TO2205 CASE 340BH FSCQ1265RT / FSCQ1565RT MARKING DIAGRAM Description A Quasi Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to a conventional hardswitched converter with a fixed switching frequency. Therefore, a QRC is well suited for noisesensitive applications, such as color TV Y&Z&3&K and audio. Each product in the FSCQ series contains an integrated CQxx65RT Pulse Width Modulation (PWM) controller and a SENSEFET . This series is specifically designed for quasiresonant offline Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed frequency oscillator, undervoltage lockout, leadingedge blanking (LEB), optimized gate driver, internal softstart, temperaturecompensated precise current Y = onsemi Logo sources for loop compensation, and self protection circuitry. &Z = Assembly Plant Code Compared with a discrete MOSFET and PWM controller solution, &3 = Date Code (Year & Week) theFSCQ series can reduce total cost, component count, size, &K = Lot Code andweight while increasing efficiency, productivity, and system CQXX65RT = Specific Device Code reliability. These devices provide a basic platform for costeffective XX = 07, 09, 12, 15 designs of quasiresonant switching flyback converters. Features ORDERING INFORMATION Optimized for QuasiResonant Converter (QRC) See detailed ordering and shipping information on page 31 of this data sheet. Advanced BurstMode Operation for under 1 W Standby Power Consumption PulsebyPulse Current Limit Overload Protection (OLP) Auto Restart OverVoltage Protection (OVP) Auto Restart Abnormal OverCurrent Protection (AOCP) Latch Internal Thermal Shutdown (TSD) Latch UnderVoltage Lockout (UVLO) with Hysteresis Low Startup Current (Typical: 25 A) Internal High Voltage SENSEFET Builtin SoftStart (20 ms) Extended QuasiResonant Switching This is a PbFree and HalidFree Device Applications CTV Audio Amplifier Related Resources FSCQ Series V O AC IN Drain FSCQSeries PWM GND Sync V V CC FB Figure 1. Typical Flyback Application Table 1. MAXIMUM OUTPUT POWER (Note 1) 230 V 15% (Note 2) 85265 V AC AC Product Open Frame (Note 3) Open Frame (Note 3) FSCQ0765RT 100 W 85 W FSCQ0965RT 130 W 110 W FSCQ1265RT 170 W 140 W FSCQ1565RT 210 W 170 W 1. The junction temperature can limit the maximum output power. 2. 230 V or 100/115 V with doubler. AC AC 3. Maximum practical continuous power in an open frame design at 50C ambient. www.onsemi.com 2