Datasheet > AS3676

AS3676

更新时间： 2022-05-04 08:33:41

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
92页	4733K
描述
Flexible Lighting Management

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AS3676 数据手册

Datasheet

AS3676

Flexible Lighting Management (CP, DCDC, 13 Current Sinks,

ADC, LED Test, LDO, DLS and Ambient Light sensing)

1 General Description

The AS3676 is a highly-integrated CMOS Power and

Lighting Management Unit for mobile telephones, and

other 1-cell Li+ or 3-cell NiMH powered devices.

- Light Sensor input with internal hardware process-

ing to control backlight according to ambient light

using 3 groups - any current source can select one

of the groups or no light sensor control

The AS3676 incorporates one Step Up DC/DC Con-

verter for white backlight LEDs, one high-power Charge

Pump, one Analog-to-Digital Converter, 13 current sinks,

LED in-circuit function test, a two wire serial interface,

and control logic all onto a single device. It supports

ambient light sensor processing and a Dynamic Lumi-

nance Scaling (DLS) input. Output voltages and output

currents are fully programmable.

Internal PWM Generation

- 8 Bit resolution

- Autonomous Logarithmic up/down dimming

Led Pattern Generator

- Autonomous driving for Fun RGB LEDs

- Support indicator LEDs

10-bit Successive Approximation ADC

The AS3676 is part of the austriamicrosystems AS3675,

AS3687/87XM and AS3689 lighting management unit

family. It is software compatible to AS3687/87XM and

AS3689 and pin and software compatible to AS3675.

- 27µs Conversion Time

- Selectable Inputs: VANA/GPI, GPIO1/DLS,

GPIO2/LIGHT, all current sources, VBAT, CPOUT,

DCDC_FB

- Internal Temp. Measurement

- Light Sensor input with Java support (JSR-256):

read ADC processed value

2 Key Features

High-Efficiency Step Up DC/DC Converter

Support for automatic LED testing (open and

shorted LEDs can be identified)

- Up to 26V/50mA for White LEDs

- Programmable Output Voltage with External Resis-

tors and Serial Interface

Strobe Timeout protection

- Up to 1600ms

- Three different timing modes

Two General Purpose Inputs/Output

- Over voltage Protection

High-Efficiency High-Power Charge Pump

- GPIO1/DLS, GPIO2/LIGHT

- Digital Input, Digital Output using VANA/GPI sup-

ply and Tristate

- 1:1, 1:1.5, and 1:2 Mode

- Automatic Up Switching (can be disabled and 1:2

mode can be blocked)

- Output Current up to 400mA/500mA pulsed

- Efficiency up to 95%

- GPIOs Programmable Pull-Up/Down

Programmable LDO

- 1.8 to 3.35V, 150mA

- Programmable via Serial Interface

Standby LDO always on

- Very Low effective Resistance (2.5 typ. in 1:1.5)

- Only 4 External Capacitors Required:

2 x 1µF Flying Capacitors, 2 x 2.2µF Input/Output

Capacitors

- Supports LCD White Backlight LEDs, or RGB

LEDs

- Regulated 2.5V max. output 10mA

- 3µA Quiescent Current

Audio can be used to drive RGB LED(s)

- Color and Brightness depends on audio amplitude

Wide Battery Supply Range: 3.0 to 5.5V

Two Wire Serial Interface Control

Over current and Thermal Protection

WL-CSP30 3x2.5mm, 0.5mm pitch Package

13 Current Sinks

- All 13 current sinks fully Programmable (8-bit)

from: 0.15mA to 38.5mA (up to 75.6mA for

CURR30...CURR33)

- Three current sinks are High Voltage capable

(CURR1, CURR2, CURR6)

- Programmable Hardware Control (Strobe, and Pre-

view or PWM)

- Selectively Enable/Disable Current Sinks

- Dynamic Luminance Scaling (DLS) support to

improve backlight operating time (can adjust any

current source)

3 Applications

Power- and lighting-management for mobile telephones

and other 1-cell Li+ or 3-cell NiMH powered devices.

www.austriamicrosystems.com/AS3676

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与AS3676相关器件

型号	品牌	获取价格	描述	数据表
AS3676-ZWLT	AMSCO	获取价格	Flexible Lighting Management
AS3677	AMSCO	获取价格	Triple Channel Lighting Management Unit with DCDC step/up, ALS, 2xDLS(=DBC) and RGB Driver
AS3677-ZWLT	AMSCO	获取价格	Triple Channel Lighting Management Unit with DCDC step/up, ALS, 2xDLS(=DBC) and RGB Driver
AS3681	AMSCO	获取价格	Power AND Lighting Management Unit
AS3682	AMSCO	获取价格	480mA Camera Lighting Management Unit
AS3682-EA1	AMSCO	获取价格	480mA Camera Lighting Management Unit
AS3682-EA2	AMSCO	获取价格	480mA Camera Lighting Management Unit
AS3682-EB1	AMSCO	获取价格	480mA Camera Lighting Management Unit
AS3682-EB2	AMSCO	获取价格	480mA Camera Lighting Management Unit
AS3682-PDM	AMSCO	获取价格	480mA Camera Lighting Management Unit

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