Datasheet > APW7008

APW7008

更新时间： 2024-10-02 06:37:31

品牌	Logo	应用领域
茂达 - ANPEC		驱动器泵
页数	文件大小	规格书
21页	311K
描述
1X/1.5X/2x Charge Pump White LED Driver

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中文翻译

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APW7008 数据手册

APW7008

1X/1.5X/2x Charge Pump White LED Driver

General Description

Features

The APW7008 is a high efficiency charge pump white

LED driver; the device drives up four white LEDs with

±1.5% LED Current Matching

High Efficiency Up to 90% Over Li-ion Battery

regulated constant current for uniform intensity. The sup-

ply voltage ranges from 2.7V to 5.5V and it is optimized for

a Li-ion battery application. The APW7008 operates in 1x,

1.5x, and 2x charge pump modes and automatically

switches the charge pump modes depend on the input

voltage to maintain the required power for high power

efficiency. The APW7008 provides up to 30mA per LED

for a total of 120mA and allows several methods, such as

a PWM signal on the CTRL0 pin for LED dimming. Three

control logic pins allow to disable or enable a combina-

tion of LEDs. The supply current is only 2mA in 2x mode,

and the EN pin allows the device to enter shutdown mode

with 2mA quiescent current. The APW7008 switches at

1MHz frequency and only requires four 1mF ceramic ca-

pacitors and one resistor, and ensures low input current

ripple and EMI.

Discharge

Output Current Up to 30mA per LED

2.7V to 5.5V Operating Voltage

Allow to Turn On or Off a Combination of LEDs

1x/1.5x/2x Charge Pump Modes

Low Shutdown Current: 2mA Maximum

Low Input Ripple and EMI

Internal Soft-Start Limits Inrush Current

Short Circuit Current-Limit

Thermal Shutdown Protection

Output Over-Voltage Protection

3mmx3mm 16-pin QFN (QFN3X3-16) Package

The APW7008 is available in a 16-pin QFN package.

Lead Free and Green Devices Available

(RoHS Compliant)

Pin Configuration

Applications

Cellular Phone White LED Back Light

16 15 14 13

Portable Device

PDA and Handheld Computer

DSC

GND

C1-

Metal

GND Pad

(Bottom)

CTRL0

CTRL1

C1+

C2-

CTRL2

APW7008

QFN3x3-16 Top View

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

www.anpec.com.tw

Rev. A.3 - Feb., 2009

12 3 4 5 6 7...21

中文翻译

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