Description

This highly integrated PWM controller provides several enhancements designed to meet the low standby-power

needs of low-power SMPS. To minimize standby power consumption, a proprietary green-mode function

provides off-time modulation to linearly decrease the switching frequency under light-load conditions. This

green-mode function enables the power supply to meet even strict power conservation requirements.

Features

Green-Mode PWM

Supports the “Blue Angel” Eco Standard

Low Start-up Current: 9µA

Low Operating Current: 3mA

Leading-Edge Blanking

Constant Output Power Limit

Universal Input

Built-in Synchronized Slope Compensation

Current Mode Operation

Cycle-by-cycle Current Limiting

Under-Voltage Lockout (UVLO)

Programmable PWM Frequency with Frequency Hopping

VDDOver-Voltage Protection (Latch off)

Gate Output Voltage Clamped at 17V

Low Cost

Few External Components Required

Small SOT-26 Package

Applications

Power Adaptors

Open-Frame SMPS