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AS3676 Datasheet Flexible Lighting Management

Manufacturer: austriamicrosystems

Overview: Technical coantmesntAsGtill valid Datasheet AS3676 Flexible Lighting Management (CP, DCDC, 13 Current Sinks, ADC, LED Test, LDO, DLS and Ambient Light sensing) 1.

Datasheet Details

Part number AS3676
Manufacturer austriamicrosystems
File Size 2.15 MB
Description Flexible Lighting Management
Datasheet AS3676-austriamicrosystems.pdf

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.

The AS3676 incorporates one Step Up DC/DC Converter 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 Luminance Scaling (DLS) input.

Key Features

  • High-Efficiency Step Up DC/DC Converter - Up to 26V/50mA for White LEDs - Programmable Output Voltage with External Resis- tors and Serial Interface - Over voltage Protection.
  • High-Efficiency High-Power Charge Pump - 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% - Very Low effective Resistance (2.5 typ. in 1:1.5) - Only 4 External Capacitors Required: 2 x 1µF Flying Capa.

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