Datasheet > RT8402

RT8402

更新时间： 2024-11-13 01:19:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
13页	554K
描述
Phase-Cut Dimmable High Side Buck LED Driver

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RT8402 数据手册

RT8402

Phase-Cut Dimmable High Side Buck LED Driver with High

Power Factor

General Description

Features

 Built-In Power MOSFET

The RT8402 is a boundary mode controller that can

provide good PFC and be suitable for wall dimmer. The

RT8402 supports phase-cut dimmers, including

leading-edge (TRIAC) and trailing-edge dimmers. It is

used for buck converter and can be compatible with

TRIAC dimmer. The external MOSFET is switched by

internal gate driver and the feedback circuit regulates

output current precisely.

 Active Power Factor Correlation

 Programmable

Constant LED Current with

High-Precision Current Regulation

 Excellent Line And Load Regulation

 Suit For High Side Buck Low BOM Cost

Requirement

 Unique Dimming Control Method to be

compatible with TRIAC Dimmer

The RT8402 features a ZCS detector which keeps

system operating in BCM and obtaining excellent

power efficiency, better EMI performance.

 Used in Low Input Voltage Range

 Support Low Percentage Dimming Angle

 Built-in Over Thermal Protection

 Output LED String Open Protection

 Output LED String Short Protection

 Over Current Protection

The robust dimming control method can adjust the

output current following the TRIAC turn on angle and

avoid abnormal flicker.

This driver can use a cheap simple drum core inductor

in the system instead of an EE core to obtain high

efficiency.

Applications

 E27, PAR, Light Bar, Offline LED Lights

The RT8402 is housed in a TSOT-23-6 package. Thus,

the components in the whole LED driver system can be

made very compact.

Pin Configuration

(TOP VIEW)

DIM VC SENSE

Ordering Information

RT8402

Package Type

J6 : TSOT-23-6

VCC SGND GATE

Lead Plating System

G : Green (Halogen Free and Pb Free)

TSOT-23-6

Note :

Richtek products are :

Marking Information

 RoHS compliant and compatible with the current

2Q= : Product Code

DNN : Date Code

requirements of IPC/JEDEC J-STD-020.

2Q=DNN

 Suitable for use in SnPb or Pb-free soldering processes

is a registered trademark of Richtek Technology Corporation.

DS8402-00 January 2017

www.richtek.com

12 3 4 5 6 7...13

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