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FSCQ1265RT Dataheets PDF



Part Number FSCQ1265RT
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Green Mode Fairchild Power Switch
Datasheet FSCQ1265RT DatasheetFSCQ1265RT Datasheet (PDF)

FSCQ-Series — Green Mode Fairchild Power Switch (FPS™) January 2014 FSCQ-Series: FSCQ0565RT / FSCQ0765RT / FSCQ0965RT / FSCQ1265RT / FSCQ1565RT Green Mode Fairchild Power Switch (FPS™) Features  Optimized for Quasi-Resonant Converter (QRC)  Advanced Burst-Mode Operation for under 1 W Standby Power Consumption  Pulse-by-Pulse Current Limit  Overload Protection (OLP) – Auto Restart  Over-Voltage Protection (OVP) – Auto Restart  Abnormal Over-Current Protection (AOCP) – Latch  Internal Th.

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FSCQ-Series — Green Mode Fairchild Power Switch (FPS™) January 2014 FSCQ-Series: FSCQ0565RT / FSCQ0765RT / FSCQ0965RT / FSCQ1265RT / FSCQ1565RT Green Mode Fairchild Power Switch (FPS™) Features  Optimized for Quasi-Resonant Converter (QRC)  Advanced Burst-Mode Operation for under 1 W Standby Power Consumption  Pulse-by-Pulse Current Limit  Overload Protection (OLP) – Auto Restart  Over-Voltage Protection (OVP) – Auto Restart  Abnormal Over-Current Protection (AOCP) – Latch  Internal Thermal Shutdown (TSD) – Latch  Under-Voltage Lockout (UVLO) with Hysteresis  Low Startup Current (Typical: 25 μA)  Internal High Voltage SenseFET  Built-in Soft-Start (20 ms)  Extended Quasi-Resonant Switching Applications  CTV  Audio Amplifier Description A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to a 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. This series is specifically designed for quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed frequency oscillator, under-voltage lockout, leadingedge blanking (LEB), optimized gate driver, internal softstart, temperature-compensated precise current sources for 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 increasing efficiency, productivity, and system reliability. These devices provide a basic platform for cost-effective designs of quasi-resonant switching flyback converters. Related Resources  AN-4146 — Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power Switch  AN-4140 — Transformer Design Consideration for Offline Flyback Converters Using Fairchild Power Switch Ordering Information Part Number Package FSCQ0565RTYDTU FSCQ0765RTYDTU FSCQ0965RTYDTU FSCQ1265RTYDTU FSCQ1565RTYDTU TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L (Forming) TO-220F-5L (Forming) © 2006 Fairchild Semiconductor Corporation FSQ-Series • Rev. 1.1.3 Marking Code CQ0565RT CQ0765RT CQ0965RT CQ1265RT CQ1565RT BVDSS (V) 650 650 650 650 650 RDSON Max. (Ω) 2.2 1.6 1.2 0.9 0.7 www.fairchildsemi.com FSCQ-Series — Green Mode Fairchild Power Switch (FPS™) Typical Circuit AC IN Sync FSCQ-Series PWM VFB VCC Drain GND VO Figure 1. Typical Flyback Application Table 1. Maximum Output Power(1) Product 230 VAC ±15%(2) Open Frame(3) FSCQ0565RT FSCQ0765RT FSCQ0965RT FSCQ1265RT FSCQ1565RT 70 W 100 W 130 W 170 W 210 W Notes: 1. The junction temperature can limit the maximum output power. 2. 230 VAC or 100/115 VAC with doubler. 3. Maximum practical conti.


FSCQ0765RT FSCQ1265RT FSCQ1565RT


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