Description

The FSQ100 consists of an integrated Pulse Width Modulator (PWM) and SenseFET, specifically designed for high-performance, off-line, Switch-Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high-voltage power switching regulator that combines a VDMOS SenseFET with a voltage mode PWM control block. The integrated PWM controller features include a fixed oscillator, Under-Voltage Lockout (UVLO) protection, Leading

Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated precision-current sources for loop compensation and fault protection circuitry.

Features

Internal Avalanche-Rugged SenseFET

Precision Fixed Operating Frequency (67KHz)

Burst-Mode Operation

Internal Start-up Circuit

Pulse-by-Pulse Current Limiting

Over-Voltage Protection (OVP)

Overload Protection (OLP)

Internal Thermal Shutdown Function (TSD)

Auto-Restart Mode

Under-Voltage Lockout (UVLO) with Hysteresis

Built-in Soft Start

Secondary-Side Regulation

Applications

Charger & Adapter for Mobile Phone, PDA, MP3

Auxiliary Power for White Goods, PC, C-TV, Monitor