AL8843Q Overview
Description
The AL8843Q is a hysteresis mode DC-DC step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device can operate from an input supply between 4.5V and 40V and provide an externally adjustable output current up to 3A.
Key Features
- Qualified to AEC-Q100 Grade 1
- Wide Input Voltage Range: 4.5V to 40V
- Output Current up to 3A
- Internal 40V NDMOS Switch
- Typical 4% Output Current Accuracy
- Single Pin for On/Off and Brightness Control by DC Voltage or PWM Signal
- Recommended Analog Dimming Range: 10% to 100%
- High Efficiency (Up to 97%)
- LED Short Protection
- Inherent Open-Circuit LED Protection
