Datasheet > AS3685A

AS3685A

更新时间： 2024-01-15 10:29:55

品牌	Logo	应用领域
艾迈斯 - AMSCO		闪光灯泵
页数	文件大小	规格书
2页	151K
描述
Ultra Small High Efficiency 700mA Charge Pump for White LED Flash

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技术参数
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AS3685A 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.66
Base Number Matches：	1

AS3685A 数据手册

AS3685A/AS3685B

austriamicrosystems

Product Brief

AS3685A/AS3685B

Ultra Small High Efficiency 700mA Charge Pump for White LED Flash

1 General Description

The AS3685 is low noise high efficiency capacitive

ꢀ

Overtemperature Protection

charge pump with 1:1, 1:1.5 and 1:2 operating

modes in a small 3x3mm DFN10 or a tiny 2x1.5mm

WL-CSP (Wafer Level Chip Scale Package)

package. It can drive one flash led at up to 700mA

current. It supports flash/torch and indicator mode

for the flash led.

Automatic 800ms Flash Timeout to protect the

flash LED (time factory programmable)

ꢀ

Two Device Variants:

AS3685A: Direct control to select three

currents

−

Additionally the AS3685 limits the flash time

automatically to protect the flash LED.

−

AS3685B: Single Pin Interface or Two Pin

Interface with Strobe Input; 17 different

currents can be selected

2 Key Features

ꢀ

Package

DFN10 3x3mm (10 pins + exposed pad)

−

ꢀ

High Efficiency capactive charge pump with 1:1,

1:1.5 and 1:2 modes

−

WL-CSP (Wafer Level Chip Scale Package)

3x4 balls 0.5mm pitch (2x1.5mm)

−

1:2 Mode can be disabled

(factory programmable)

3 Application

ꢀ

Up to 700mA Led Current

Automatic Charge Pump Mode switching (Up)

LED cathode disconnect in Shutdown

ꢀ

Flash / Torch for Mobile Phones, Digital

Cameras and PDA

4 Application Diagram

Figure 1 – Application Diagram of AS3685A/AS3685B

FLY1 1.0 F

CFLY2 1.0 F

C1+ C1- C2+ C2-

VBAT

VCP

AS3685A

AS3685B

CBAT

2.2 F

CVCP

2.2 F

EN1

EN2

ILED

DLED

ISET VSS

TXMASK

ISET

www.austriamicrosystems.com (ptr)

Revision 2.0 / 20060726

1 - 2

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