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This literature is subject to all applicable copyright laws and is not for resale in any manner.FSL138MRT Green-Mode Fairchild Power Switch (FPS) for High Input Voltage May 2012 FSL138MRT Green-Mode Fairchild Power Switch (FPS) for High Input Voltage Features Description The FSL138MRT is an integrated Pulse Width Internal Avalanched-Rugged 800V SenseFET Modulation (PWM) controller and SenseFET specifically Advanced Soft Burst-Mode Operation for designed for offline Switched-Mode Power Supplies Low Standby Power and Low Audible Noise (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency Under 40mW Standby Power Consumption oscillator, Under-Voltage Lockout (UVLO), Leading- at 265V and No-load Condition AC Edge Blanking (LEB), optimized gate driver, internal Random Frequency Fluctuation for Low EMI soft-start, temperature-compensated precise current sources for loop compensation, and self-protection Pulse-by-Pulse Current Limit circuitry. Compared with a discrete MOSFET and PWM Various Protection Functions: Overload Protection controller solution, the FSL138MRT can reduce total (OLP), Over-Voltage Protection (OVP), Abnormal cost, component count, size, and weight while Over-Current Protection (AOCP), Internal Thermal simultaneously increasing efficiency, productivity, and Shutdown (TSD) with Hysteresis and Under-Voltage system reliability. This device provides a basic platform Lockout (UVLO) with Hysteresis suited for cost-effective design of a flyback converter. Low Operating Current (0.4mA) in Burst Mode Internal Startup Circuit Built-in Soft-Start: 15ms Auto-Restart Mode Applications Power Supply for STB Home Appliances and Industrial for High AC Input Ordering Information (2) Output Power Table Operating (3) Current R Replaces 230V 15% 85~265V DS(ON) AC AC Part Number Package Junction Limit (Max.) Device Open Open (4) (4) Temperature Adapter (5) Adapter (5) Frame Frame TO-220F -40C ~ KA5M0380RY FSL138MRT 6-Lead 2.15A 5 35W 50W 24W 35W +125C DTU (1) W-Forming Notes: 1. Pb-free package per JEDEC J-STD-020B. 2. The junction temperature can limit the maximum output power. 3. 230V or 100/115V with voltage doubler. AC AC 4. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature. 5. Maximum practical continuous power in an open-frame design at 50C ambient temperature. 2012 Fairchild Semiconductor Corporation www.fairchildsemi.com FSL138MRT Rev. 1.0.0