A8181
Overview
The A8181 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 36V and provides an externally output current up to 1.2A.
- Simple low parts count
- Internal 36V NDMOS switch
- Up to 1.2A output current
- Single pin on/off and brightness control using DC voltage or PWM
- Soft Start
- High efficiency (up to 97%)
- Wide input voltage range: 6V to 36V
- Output shutdown
- Up to 1MHz switching frequency
- Inherent open-circuit LED protection
