描述 Description

This primary-side PWM integrated power MOSFET significantly simplifies power supply designs that require CV and CC regulation capabilities. FSEZ1016A controls the output voltage and current precisely with only the information in the primary side of the power supply, not only removing the output current sensing loss, but also eliminating all secondary feedback circuitry.

The green-mode function with a low startup current (10μA) maximizes the light-load efficiency so the power supply can meet stringent standby power regulations.

Compared with conventional secondary-side regulation approach; the FSEZ1016A can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability.

特性 Features

■ Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry

■ Accurate Constant Current Achieved by Fairchild’s Proprietary TRUECURRENT? Technique

■ Green Mode: Frequency Reduction at Light-Load

■ Fixed PWM Frequency at 43kHz with Frequency Hopping to Reduce EMI

■ Low Startup Current: 10μA Maximum

■ Low Operating Current: 3.5mA

■ Peak-Current-Mode Control in CV Mode

■ Cycle-by-Cycle Current Limiting

■ Over-Temperature Protection (OTP) with Auto-Restart

■ Brownout Protection with Auto-Restart

■ VDD Over-Voltage Protection (OVP) with Auto-Restart

■ VDD Under-Voltage Lockout (UVLO)

■ SOIC-7 Package

Applications

■ Battery Chargers for Cellular Phones, Cordless Phones, PDAs, Digital Cameras, Power Tools

■ Replaces Linear Transformer and RCC SMPS

■ Offline High Brightness (HB) LED Drivers