Datasheet > AP5724

AP5724

更新时间： 2024-11-20 06:37:19

品牌	Logo	应用领域
美台 - DIODES		转换器升压转换器
页数	文件大小	规格书
17页	295K
描述
WHITE LED STEP-UP CONVERTER

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中文翻译

获取价格

数据手册

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AP5724 数据手册

AP5724

WHITE LED STEP-UP CONVERTER

Description

Pin Assignments

(Top View)

The AP5724 is a step-up DC/DC converter specifically

designed to drive white LEDs with a constant current. The

device can drive 2 ~ 6 LEDs in series from a Li-Ion cell.

Series connection of the LEDs provides identical LED

currents resulting in uniform brightness and eliminates the

need for ballast resistors. For driving higher number of LEDs,

VIN

(Top View)

GND

V_IN

GND

OVP

AP5724 also supports

a single feedback of parallel

connected multiple strings of equal number of LEDs.

SOT26 / TSOT23-6

DFN2020C-6

The AP5724 switches at 1.2MHz that allows the use of tiny

external components. A low 0.1V feedback voltage minimizes

power loss in the current setting resistor for better efficiency.

Features

Applications

•

High efficiency: 84% typical

•

Cellular Phones

PDAs, Hand held Computers

Digital Cameras

MP3 Players

GPS Receivers

Fast 1.2MHz switching frequency

Current limit and UVLO protections

Internal thermal shutdown

Internal Over Voltage Protection

Integrated soft-start function

SOT26, TSOT23-6 and DFN2020C-6: Available in

“Green” Molding Compound (No Br, Sb)

Lead Free Finish/ RoHS Compliant (Note 1)

•

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

Typical Application Circuit

22uH

V_IN

C_OUT

1uF

C_IN

1uF

V_IN

2~6 LEDs

OVP

AP5724

ON OFF

PWM Dimming

R^SET

GND

Figure 1. Typical Application Circuit

1 of 17

www.diodes.com

July 2010

AP5724

Document number: DS31843 Rev. 3 - 2

12 3 4 5 6 7...17

中文翻译

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与AP5724相关器件

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AP5724_10	DIODES	获取价格	WHITE LED STEP-UP CONVERTER
AP5724FDCG-7	DIODES	获取价格	WHITE LED STEP-UP CONVERTER
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AP5725FDCG-7	DIODES	获取价格	WHITE LED STEP-UP CONVERTER
AP5725WG-7	DIODES	获取价格	WHITE LED STEP-UP CONVERTER
AP5725WUG-7	DIODES	获取价格	WHITE LED STEP-UP CONVERTER
AP5726	DIODES	获取价格	WHITE LED STEP-UP CONVERTER