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FSCM0765RJ Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSCM0765RJ Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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1 / 20 page  ©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.1.0 Features • Internal Avalanche Rugged SenseFET • Low Start-up Current (max 40uA) • Low Power Consumption under 1 W at 240VAC and 0.4W Load • Precise Fixed Operating Frequency (66kHz) • Frequency Modulation for low EMI • Pulse by Pulse Current Limiting (Adjustable) • Over Voltage Protection (OVP) • Over Load Protection (OLP) • Thermal Shutdown Function (TSD) • Auto-Restart Mode • Under Voltage Lock Out (UVLO) with Hysteresis • Built-in Soft Start (15ms) Application • SMPS for VCR, SVR, STB, DVD and DVCD • Adaptor • SMPS for LCD Monitor Related Application Notes • AN-4137: Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS) • AN-4140: Transformer Design Consideration for off-line Flyback Converters using Fairchild Power Switch • AN-4141: Troubleshooting and Design Tips for Fairchild Power Switch Flyback Applications • AN-4148: Audible Noise Reduction Techniques for FPS Applications Description The FSCM0765R is an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high voltage power switching regulator which combines an avalanche rugged SenseFET with a current mode PWM control block. The PWM controller includes 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, it can reduce total cost, component count, size, and weight while simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform well suited for cost effective designs of flyback converters. Table 1. Maximum Output Power Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50 °C ambient. 2. Maximum practical continuous power in an open-frame design at 50 °C ambient. 3. 230 VAC or 100/115 VAC with doubler. Typical Circuit Figure 1. Typical Flyback Application OUTPUT POWER TABLE PRODUCT 230VAC ±15%(3) 85-265VAC Adapt- er(1) Open Frame(2) Adapt- er(1) Open Frame(2) FSCM0565RJ 50W 65W 40W 50W FSCM0765RJ 65W 70W 50W 60W FSCM0565RI 50W 65W 40W 50W FSCM0765RI 65W 70W 50W 60W FSCM0565RG 70W 85W 60W 70W FSCM0765RG 85W 95W 70W 85W Drain GND Vfb Vcc PWM AC IN DC OUT I limit FSCM0765R Green Mode Fairchild Power Switch (FPSTM) |
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