Datasheet > RT7304GE

RT7304GE

更新时间： 2024-11-10 01:18:19

品牌	Logo	应用领域
立锜 - RICHTEK		功率因数校正
页数	文件大小	规格书
14页	273K
描述
Primary-Side-Regulation LED Driver Controller with Active PFC

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中文翻译

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数据手册

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RT7304GE 数据手册

RT7304

Primary-Side-Regulation LED Driver Controller

with Active PFC

General Description

Features

^Tight LED Current Regulation

The RT7304 is a constant current LED driver with active

power factor correction. It supports high power factor

across a wide range of line voltages, and it drives the

converter in the Quasi-Resonant (QR) mode to achieve

higher efficiency. By using Primary Side Regulation (PSR),

the RT7304 controls the output current accurately without

a shunt regulator and an opto-coupler at the secondary

side, reducing the external component count, the cost,

and the volume of the driver board.

^No Opto-Coupler and TL431 Required

^Power Factor Correction (PFC)

^Quasi-Resonant

^Maximum/Minimum Switching Frequency

Clamping

^Maximum/Minimum On-Time Limitation

^Wide VDD Voltage Range (up to 25V)

^Multiple Protection Features

 LED Open-Circuit Protection

 LED Short-Circuit Protection

^Output Diode Short-Circuit Protection

^VDD Under-Voltage Lockout

The RT7304 embeds comprehensive protection functions

for robust designs, including LED open-circuit protection,

LED short-circuit protection, output diode short-circuit

protection, VDDUnder-Voltage lockout (UVLO), VDDOver-

Voltage Protection (VDD OVP), Over-Temperature

Protection (OTP), and cycle-by-cycle current limitation.

^VDD Over-Voltage Protection

^Over-Temperature Protection

^Cycle-by-Cycle Current Limit

 RoHS Compliant and Halogen Free

Marking Information

0H= : Product Code

Applications

0H=DNN

DNN : Date Code

 AC/DC LED Lighting driver

Simplified Application Circuit

Flyback Converter

Buck-Boost Converter

TX1

OUT

Line

OUT-

Line

OUT+

OUT

SIN

RT7304

OUT+

RT7304

OUT-

Neutral

VDD

COMP

ZCD

GND

COMP

ZCD

GND

COMP

ZCD2

ZCD1

AUX

is a registered trademark of Richtek Technology Corporation.

DS7304-04 February 2015

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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