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ADP5501ACPZ-RL

更新时间： 2024-11-06 06:36:23

品牌	Logo	应用领域
亚德诺 - ADI		驱动器模拟IC 传感器信号电路 PC
页数	文件大小	规格书
28页	1113K
描述
Programmable Current Backlight Driver with Ambient Light Sensor Input

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中文翻译

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数据手册

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ADP5501ACPZ-RL 数据手册

Programmable Current Backlight Driver

with Ambient Light Sensor Input

ADP5501

TYPICAL OPERATING CIRCUIT

FEATURES

Efficient asynchronous boost converter for driving up to

6 white LEDs

2.7 V to 5.5 V input voltage range

128 programmable backlight LED current levels (30 mA

maximum)

Programmable backlight fade-in/fade-out times

Programmable backlight dim and off times

Ambient light sensing with autonomous backlight

adjustment

1µF

2.7V TO 5.5V

4.7µH

1µF

BST

BL_SNK

PGND

VBAT

VDDIO

CAP_OUT

I/O RAIL

1µF

GND

ADP5501

SCL

SDA

INT

100nF

VBAT

3 auxiliary LED current sinks

CMP_IN

RGB

64 programmable auxiliary LED current levels (14 mA

maximum)

RST

NC NC NC NC NC NC

LED1 LED2 LED0

Programmable auxiliary LED fade-in/fade-out times

Programmable auxiliary LED on and off times (allows

blinking)

10 11

3.3V

I²C-compatible serial interface

Figure 1.

Interrupt line for signaling an external processor (INT)

Hard reset (RST)

Current limit protection

Thermal overload protection

Available in small 4.0 mm × 4.0 mm, 24-lead LFCSP package

APPLICATIONS

Display backlight driver with ambient light sensor input and

control and multiple LED indicator sinks

The ADP5501 can detect ambient light levels and adjust the

backlight brightness accordingly, resulting in extended battery life.

GENERAL DESCRIPTION

The ADP5501 is a versatile, single-chip, white LED backlight

driver with programmable ambient light sensor input and

programmable LED current. This device is designed for media-

enabled handset applications. The ADP5501 uses an I²C®-

compatible serial interface and a single line interrupt to

communicate with the host processor.

Once configured, the ADP5501 is capable of controlling the

display backlight intensity, on/off timing, dimming, and fading

without the intervention of the main processor, which translates

into valuable battery power savings. The three auxiliary LEDs

are also capable of fading and are timed on and off via register

programming.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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