Datasheet > ADP5520ACPZ-R7

ADP5520ACPZ-R7

更新时间： 2024-11-06 21:06:23

品牌	Logo	应用领域
亚德诺 - ADI		驱动接口集成电路
页数	文件大小	规格书
39页	1291K
描述
Backlight Driver with I/O Expander

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数据手册
替代型号

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ADP5520ACPZ-R7 数据手册

Backlight Driver with I/O Expander

Data Sheet

ADP5520

FEATURES

TYPICAL OPERATING CIRCUIT

Efficient asynchronous boost converter for driving up to

6 white LEDs

2.7 V to 5.5 V input voltage range

1µF

VBAT

4.7µH

1µF

128 programmable backlight LED current levels (30 mA

maximum)

Ambient light sensing with autonomous backlight

adjustment

Programmable backlight fade-in/fade-out times

Programmable backlight dim and off times

8 configurable GPIO pins (input, output, up to 4 × 4 keypad)

Up to 3 auxiliary LED current sinks (1 dedicated, 2 configurable)

64 programmable auxiliary LED current levels (14 mA

maximum)

BST

BL_SNK

PGND

VBAT

CAP_OUT

I/O RAIL

1µF

VDDIO

GND

ADP5520

SCL

SDA

INT

100nF

VBAT

CMP_IN

RST

R3 R2 R1 R0 C0 C1 C2 C3

ILED

10 11 12

Programmable auxiliary LED fade-in/fade-out times

Programmable auxiliary LED on and off times (allows

blinking)

VBAT

Figure 1.

I²C-compatible serial interface

INT

Interrupt line for signaling an external processor (

RST

)

Hard reset (

)

Current limit protection

Thermal overload protection

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

APPLICATIONS

Display backlight driver for phones that require slider or flip

keypad functions with single or multiple LED indicators

GENERAL DESCRIPTION

The ADP5520 is a versatile single-chip, white LED backlight

driver with a user configurable I/O expander. This device fits

handset applications where the flip or slider section of the phone

requires backlighting, I/O signaling and detecting, auxiliary LED

lighting, and keypad functions. By incorporating an I²C-

compatible serial interface and a single line interrupt, the

ADP5520 significantly reduces the total number of lines

required to interface with the baseband processor across the

hinge flex.

The ADP5520 can detect ambient light levels and adjust the

backlight brightness accordingly, resulting in extended battery

operation.

Once configured, the ADP5520 is capable of controlling the

flip/slider backlight intensity, on/off timing, dimming, and

fading without the intervention of the main processor, which

results in valuable battery power saving.

Rev. B

Document Feedback

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 registered trademarks are the property of their respective owners.

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

Technical Support

www.analog.com

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中文翻译

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ADP5520ACPZ-R7 替代型号

型号	品牌	替代类型	描述	数据表
ADP5520ACPZ-RL	ADI	完全替代	Backlight Driver with I/O Expander

与ADP5520ACPZ-R7相关器件

型号	品牌	获取价格	描述	数据表
ADP5520ACPZ-RL	ADI	获取价格	Backlight Driver with I/O Expander
ADP5520ACPZ-RL1	ADI	获取价格	Backlight Driver with I/O Expander
ADP5585	ADI	获取价格	Keypad Decoder and I/O Expansion GPIO functions GPIO functions
ADP5585ACBZ-00-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACBZ-01-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACBZ-02-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACBZ-04-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACPZ-00-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACPZ-01-R7	ADI	获取价格	Keypad Decoder and I/O Expansion
ADP5585ACPZ-03-R7	ADI	获取价格	Keypad Decoder and I/O Expansion

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