Description

The highly integrated FSBH-series 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  Brownout Protection with Hysteresis

ƒ  Built-In 5ms Soft-Start Function

ƒ  Internal Avalanche-Rugged 700V SenseFET

ƒ  No Acoustic Noise During Light-Load Operation

ƒ  High-Voltage Startup

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

ƒ  VDDUnder-Voltage Lockout (UVLO)

ƒ  VDDOver-Voltage Protection (OVP)

ƒ  Internal Auto-RestartCircuit (OVP, OTP)

ƒ  Constant Power Limit (Full AC Input Range)

ƒ  Internal OTP Sensor with Hysteresis

ƒ  VIN Pin for Pull-HIGH Latch Function and Pull LOW Auto-Recovery Protection

Applications

General-purpose switch-mode power supplies and flyback power converters, including:

ƒ  Auxiliary Power Supply for PC and Server

ƒ  SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile, and Scanner

ƒ  Adapter for Camcorder