Datasheet > LD7830GS

LD7830GS

更新时间： 2024-10-15 01:08:15

品牌	Logo	应用领域
通嘉科技 - LEADTREND		/
页数	文件大小	规格书
18页	495K
描述
High Power Factor Flyback LED Controller with HV Start-up

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LD7830GS 数据手册

LD7830

8/17/2012

High Power Factor Flyback LED Controller with HV Start-up

REV: 01a

General Description

Features

The LD7830 is a HV start-up Flyback PFC controller,

specially designed for LED lighting appliances. It operates

in transition(TM) mode and integrates with complete

protections required for safety and therefore it’s an

excellent solution to minimize the components counts.

Those make it ideal for cost- effective applications.



High voltage (600V) startup circuit

High Power Factor Flyback PFC controller

High-efficiency Transition mode operation

Wide UVLO (16Von and 7.5 Voff)

VCC OVP (Over Voltage Protection)

OLP (Over Load Protection)

OCP (Cycle by cycle current limiting) Vcs=0.5V

Internal OTP (Over Temperature Protection)

500/-800mA Driving Capability

With HV start-up technology, high power factor and TM

control, the start-up time and resistor loss could be

minimized efficiently. The circuit can easily achieve

PF>0.90 to meet most of the international standard

requirements.

Internal OTP function

Applications



LED Power Supply

With completed protection built inside this IC, such as

over voltage protection (OVP), over current protection

(OCP), over load protection (OLP), over temperature

protection (OTP), and short circuit protection (SCP), It

enable the circuit to meet most safety requirements either

in normal and abnormal test.



Flyback PFC Power Supply

Typical Application

LF1

EMI

Filter

Input

LED+

LED-

GATE

VCC

ZCD

ISEN

GND

VSEN

LD7830 _COMP

1.25V 0.1V

LD8105

IREF

VCC

OUT

GND

LED+

Leadtrend Technology Corporation www.leadtrend.com.tw

LD7830-DS-01a August 2012

12 3 4 5 6 7...18

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