Description

The FSL136MRT is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection

circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSL136MRT can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform suited for cost-effective design of a flyback converter.

Features

Internal Avalanched-Rugged 650V SenseFET

Advanced Soft Burst-Mode Operation for Low Standby Power and Low Audible Noise

Random Frequency Fluctuation for Low EMI

Pulse-by-Pulse Current Limit

Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal

Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, and Under-Voltage Lockout (UVLO) with Hysteresis

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 DVD Combination