Datasheet > AP3008_06

AP3008_06

更新时间： 2024-01-31 18:37:14

品牌	Logo	应用领域
BCDSEMI		驱动器
页数	文件大小	规格书
10页	121K
描述
WHITE LED DRIVER

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数据手册

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AP3008_06 数据手册

Preliminary Datasheet

WHITE LED DRIVER

AP3008

General Description

Features

The AP3008 is a 1.2MHz PWM boost switching regu-

lator designed for constant-current white LED driver

applications.

Inherently Uniform LED Current

High Efficiency up to 84%

Drives 2 to 3 LEDs from a 2.7V Supply

1.2MHz PWM Operation Frequency

Requires Only 0.22µF Output Capacitor

Shutdown Current: < 1µA

Built-in Output Over-Voltage Protection

Under Voltage Lock Out (UVLO)

The AP3008 can drive a string of 2 to 3 white LEDs

from a 2.7V supply in series, ensuring uniform bright-

ness and eliminating several ballast resistors. The

AP3008 implements a constant frequency 1.2MHz

PWM control scheme. The high frequency PWM oper-

ation also saves board space by reducing external com-

ponent sizes. To improve efficiency, the feedback

voltage is set to 95 mV, which reduces the power

dissipation in the current setting resistor.

Applications

Digital Cameras

LCD modules

GPS Receivers

Cellular Phones

The AP3008 is equipped with OVP protection ability,

the SW pin monitors the output voltage and will turn

off the device if an over-voltage condition is present to

prevent damage from an open circuit condition.

PDAs, Handheld Computers

The AP3008 is available in SOT-23-5L package.

SOT-23-5L

Figure 1. Package Type of AP3008

Jul. 2006 Rev. 1. 3

BCD Semiconductor Manufacturing Limited

12 3 4 5 6 7...10

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