Datasheet > AP5726

AP5726

更新时间： 2024-11-18 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
16页	301K
描述
WHITE LED STEP-UP CONVERTER

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中文翻译

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AP5726 数据手册

AP5726

WHITE LED STEP-UP CONVERTER

General Description

Features

The AP5726 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. The

AP5726 switches at 1.2MHz that allows the use of tiny external

components. A low 0.31V feedback voltage minimizes power loss

in the current setting resistor for better efficiency.

•

Inherently Matched LED Current

High Efficiency: 84% Typical

Fast 1.2MHz Switching Frequency

Current limit and UVLO Protections

Internal Thermal Shutdown

Internal Over Voltage Protection

Integrated Soft-start Function

SOT26 and DFN2020C-6: Available in “Green”

Molding Compound (No Br, Sb)

Lead Free Finish/RoHS Compliant (Note 1)

•

Applications

•

Cellular Phones

PDAs, Hand help Computers

Digital Cameras

MP3 Players

GPS Receivers

Typical Application Circuit

22uH

V_IN

C_OUT

1uF

C_IN

1uF

V_IN

2~6 LEDs

OVP

AP5726

ON OFF

PWM Dimming

R^SET

GND

Figure 1. Typical Application Circuit

AP5726 Rev. 1

1 of 16

JUNE 2009

www.diodes.com

12 3 4 5 6 7...16

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