Description
The highly integrated FSL137H consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

FEATUREs
ƒ Built-in 5ms Soft-Start Function
ƒ Internal Avalanche Rugged 700V SenseFET
ƒ Low Audio Noise
ƒ High-Voltage Startup
ƒ Fixed PWM Frequency at 100KHz
ƒ Linearly Decreasing PWM Frequency to 18KHz
ƒ Peak-Current-Mode Control
ƒ Cycle-by-Cycle Current Limiting
ƒ Leading-Edge Blanking (LEB)
ƒ Synchronized Slope Compensation
ƒ Internal Open-loop Protection (OLP)
ƒ VDD Under-Voltage Lockout (UVLO)
ƒ VDD Over-Voltage Protection (OVP)
ƒ Constant Power Limit (Full AC Input Range)
ƒ Internal OTP Sensor with Hysteresis

APPLICATIONs
General-purpose switch-mode power supplies and flyback power converters, including:
ƒ SMPS for VCR, SVR, STB, DVD & VCD Player,Printer, Facsimile, & Scanner
ƒ Adapter for Camcorder