Datasheet > RT8471

RT8471

更新时间： 2024-11-13 00:58:15

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	237K
描述
Hysteretic, High Brightness LED Driver

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中文翻译

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数据手册

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RT8471 数据手册

RT8471

1.2A/1A, Hysteretic, High Brightness LED Driver with

Internal Switch

General Description

Features

^7V to 36V Input Voltage Range

The RT8471 is a high efficiency, continuous mode inductive

step-down converter, designed for driving single or multiple

series connected LEDs from a voltage source higher than

the LEDvoltage. It operates from an input voltage of 7V to

36V and employs hysteretic control with a high side current

sense resistor to set the constant output current.

^Hysteretic Control with High Side Current Sensing

^Internal N-MOSFET with 350mΩ Low R_DS(ON)

^1A Output Current (For TSOT-23-5 Only)

^1.2A Output Current (For SOP-8 (Exposed Pad) and

MSOP-8 (Exposed Pad) Only)

^Up to 97% Efficiency

The RT8471 includes an output switch and a high side

output current sensing circuit, which uses an external

resistor to set the nominal average output current. LED

brightness control is achieved with PWM dimming from

an analog or PWM input signal.

^Typical 5% LED Current Accuracy

^Analog or PWM Control Signal for LED Dimming

^300Hz On-Board Ramp Generator

^Input Under Voltage Lockout

 Thermal Shutdown Protection

The RT8471 is available in a small TSOT-23-5 package or

a more thermal efficient SOP-8 (Exposed Pad) and MSOP-

8 (Exposed Pad) packages.

 RoHS Compliant and Halogen Free

Applications

 Automotive LED Lighting

Ordering Information

 High Power LED Lighting

RT8471

 Indicator and Emergency Lighting

 Architectural Lighting

Package Type

J5 : TSOT-23-5

SP : SOP-8 (Exposed Pad-Option 1)

FP : MSOP-8 (Exposed Pad)

 Low Voltage Industrial Lighting

 Signage andDecorative LEDLighting

Lead Plating System

Marking Information

RT8471GJ5

G : Green (Halogen Free and Pb Free)

(for MSOP-8 (Exposed Pad) and

TSOT-23-5 )

01= : Product Code

Z : ECO (Ecological Element with

Halogen Free and Pb free)

(for SOP-8 (Exposed Pad) Only)

01=DNN

DNN : Date Code

RT8471ZSP

Note :

RT8471ZSP : Product Number

Richtek products are :

RT8471

ZSPYMDNN

YMDNN : Date Code

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

RT8471GFP

0D= : Product Code

YMDNN : Date Code

0D=YM

DNN

is a registered trademark of Richtek Technology Corporation.

DS8471-02 December 2013

www.richtek.com

12 3 4 5 6 7...15

中文翻译

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与RT8471相关器件

型号	品牌	获取价格	描述	数据表
RT8471GFP	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8471GJ5	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8471GSP	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8471ZFP	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8471ZJ5	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8471ZSP	RICHTEK	获取价格	Hysteretic, High Brightness LED Driver
RT8479C	RICHTEK	获取价格	Two-Stage Hysteretic LED Driver
RT8479CGSP	RICHTEK	获取价格	Two-Stage Hysteretic LED Driver
RT8494	RICHTEK	获取价格	High Voltage High Current LED Driver Controller
RT8494GS	RICHTEK	获取价格	High Voltage High Current LED Driver Controller

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