MP1523

更新时间： 2024-09-28 04:14:51

品牌	Logo	应用领域
芯源 - MPS		驱动器
页数	文件大小	规格书
7页	137K
描述
Precision 6-Lamp White LED Driver

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中文翻译

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MP1523 数据手册

MP1523

Precision 6-Lamp

White LED Driver

Monolithic Power Systems

INITIAL RELEASE

DESCRIPTION

FEATURES

The MP1523 is a 5-pin SOT23 step-up

converter designed for driving up to six (6)

series white LEDs from a single-cell Lithium

Ion battery. The MP1523 uses a current

limited, variable frequency architecture to

regulate the LED current, which is measured

through an external current sense resistor. Its

low 0.4V feedback threshold reduces power

loss and improves efficiency. To prevent

damage due to an open circuit condition, the

BIAS pin can measure the output voltage and

turn off the converter if an over-voltage

condition is present.

•

On Board Power MOSFET

Drives up to 6 White LEDs

Up to 90% Efficiency

Over 80mA Output Current Capacity

Open Load Shutdown

Low 0.4V Feedback Threshold

UVLO, Thermal Shutdown

Soft-Start

Internal Current Limiter

Available in SOT23-5 Package

Evaluation Board Available

APPLICATIONS

The MP1523 includes under-voltage lockout,

current limiting, and thermal overload

protection to prevent damage in the event of

an output overload. The MP1523 is available in

a small 5-pin SOT23 package.

•

Cell Phones

Handheld Computers and PDAs

Digital Still and Video Cameras

Small LCD Displays

, “MPS”, “Monolithic Power Systems”, and “The Future of Analog IC

Technology” are Registered Trademarks of Monolithic Power Systems, Inc.

TYPICAL APPLICATION

2.7V to 5.5V

100

Up To

6 LEDs

BIAS

MP1523

= 5V

= 4V

= 3V

GND

MP1523-TAC-S01

LED CURRENT (mA)

MP1523-EC01

07/04, Rev. 1.6

www.MonolithicPower.com

12 3 4 5 6 7

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