LD9852

02/17/2015

1

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD9852-DS-00 February 2015

Non-isolation Buck Solution

High Power Factor LED Controller with MOS Integrated

REV. 00

General Description

The LD9852 is a floating switch buck solution with Active

PFC (APFC) control for LED lighting. It is easy to design

with minimum cost and PCB size. The device operates in

transition mode (TM) and integrates with complete safety

requirement protections.

With power factor correction and TM control, the system is

enabled to achieve high PF and high efficiency and to

meet most of the international standard.

The LD9852 also features LED open protection (ZCD

OVP), LED short protection, over current protection (OCP),

and over temperature protection (OTP). It makes the

circuit designers easily to meet most of the safety

requirements in either normal or abnormal test.

Features

Applications

Typical Application

GND

COMP

VCC

ZCD

Drain

EMI

Filter

AC

Input

LD9852

Source