AS3682 Overview
The AS3682 is a low-noise, high-current charge pump designed for camera flash LEDs and LCD backlighting applications. The device is capable of driving up to 480mA of load current. The AS3682 integrates two independent LED blocks for driving a single flash LED (CURR11 to CURR13) with up to 480mA, and general purpose LEDs (CURR2 to CURR4) with up to 160mA/LED.
AS3682 Key Features
- 1:1, 1:1.5, and 1:2 Intelligent Adaptive Mode Setting (IAMS)
- Efficiency up to 95%
- Soft Start to Reduce Inrush Current
- Low-Noise Constant-Frequency Operation Current Sinks
- 400mA Continuous Flash Current (@VIN = 3.2 to 5V, VOUT = 5V)
- 480mA Maximum Pulsed Flash Current
- Programmable: 0 to 160mA, 0.625mA Resolution Flexible Brightness Control
- Three 0 to 160mA LEDs
- Individually Addressable via I2C Interface Three Operating Modes
- Normal Mode (I2C Interface)