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Data Sheet

Single Stage Primary Side Regulation PFC Controller For LED Driver AP1682

Dec. 2011 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

General Description

The AP1682 is a high performance AC/DC universal

input Primary Side Regulation Power Factor

Controller for LED driver applications. The device

uses Pulse Frequency Modulation (PFM) technology

to regulate output current while achieving high power

factor and low THD.

The AP1682 provides accurate constant current (CC)

regulation while removing the opto-coupler and

secondary control circuitry. It also eliminates the

need of loop compensation circuitry while

maintaining stability. The AP1682 achieves excellent

regulation and high efficiency, yet meets the

requirement of IEC61000-3-2 harmonic standard.

The AP1682 features low start-up current, low

operation current and high efficiency. It also has rich

protection features including over voltage, short

circuit, over current, over temperature protection etc.

The AP1682 is available in SOIC-8 package.

Features

• Primary Side Control for Output Current

Regulation Without Opto-coupler and Secondary

CV/CC Control Circuitry

• Low Start-up Current

• High Power Factor and Low THD for Universal

Input Range

• Tight CC Regulation Performance for Universal

Input Mains Voltage Range

• Eliminates Control Loop Compensation

Circuitry

• Built-in Acceleration Start

• Open-load and Reload Detection

• Over Voltage and Short Circuit Protection

• Over Temperature Protection

• Over Current Protection

• Cost Effective Total PFC LED Driver Solution

Applications

• Single Stage Power Factor Correction Power

Supply for LED Lighting

Figure 1. Package Type of AP1682

SOIC-8

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