RT7302GS datasheet(1/15 Pages) RICHTEK

tên linh kiện	RT7302GS

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RT7302

®

DS7302-03 May 2015

www.richtek.com

1

©

is a registered trademark of Richtek Technology Corporation.

Primary-Side-Regulation Dimmable LED Driver Controller

with Active PFC

General Description

The RT7302 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 RT7302 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.

The RT7302 is designed to be compatible with PWM

Dimming. The output current can be modulated by the

duty ratio of the external PWM dimming signal.

An in-house design High Voltage (HV) start-up device is

integrated in the RT7302 to minimize the power loss and

shorten the start-up time.

The RT7302 embeds comprehensive protection functions

for robust designs, including LED open-circuit protection,

LED short-circuit protection, output diode short-circuit

protection, VDD Under-Voltage Lockout (UVLO), VDD

Over-Voltage Protection (VDD OVP), Over-Temperature

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

Features



Tight LED Current Regulation



No Opto-Coupler and TL431 Required



Power Factor Correction (PFC)



Compatible with PWM Dimming



Built-in HV Start-up Device



Quasi-Resonant



Maximum/Minimum

Switching

Frequency

Clamping



Input Voltage Feed-Forward Compensation



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



VDD Over-Voltage Protection



Over-Temperature Protection



Cycle-by-Cycle Current Limit



RoHS Compliant and Halogen Free

Applications



AC/DC LED Lighting driver

Flyback Converter

Buck-Boost Converter

Simplified Application Circuit

VOUT+

MULT

COMP

GND

GD

CS

VDD

RT7302

VOUT-

HV

DOUT

TX1

RPC

RCS

DAUX

CVDD

RZCD1

RZCD2

ZCD

RHV

RM1

RM2

CCOMP

CSIN

Line

Neutral

BD

COUT

Q1

VOUT-

MULT

COMP

GND

GD

CS

VDD

RT7302

VOUT+

HV

DOUT

TX1

RPC

RCS

DAUX

CVDD

RZCD1

RZCD2

ZCD

RHV

RM1

RM2

CCOMP

CSIN

Line

Neutral

BD

COUT

Q1

Số phần tương tự - RT7302GS

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Richtek Technology Corp...	RT7304	273Kb / 14P	Primary-Side-Regulation LED Driver Controller with Active PFC
	RT7304A	711Kb / 16P	Primary-Side Regulation LED Driver Controller
	RT7304AGE	711Kb / 16P	Primary-Side Regulation LED Driver Controller
	RT7304GE	273Kb / 14P	Primary-Side-Regulation LED Driver Controller with Active PFC
	RT7305	778Kb / 14P	The RT7305 consists of a high voltage power MOSFET

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Mô tả tương tự - RT7302GS

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
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Richtek Technology Corp...	RT7310	557Kb / 12P	Phase-Cut Dimmable Primary-Side Regulation
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Diodes Incorporated	AP1682E	366Kb / 10P	SINGLE STAGE PRIMARY SIDE REGULATION PFC CONTROLLER FOR LED DRIVER Rev 1
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Richtek Technology Corp...	RT7304	273Kb / 14P	Primary-Side-Regulation LED Driver Controller with Active PFC
Richtek Technology Corp...	RT7304A	711Kb / 16P	Primary-Side Regulation LED Driver Controller
Renesas Technology Corp	ISL1904	952Kb / 21P	Dimmable AC Mains LED Driver with PFC and Primary Side Regulation

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