AL8891
Overview
The AL8891 is an easy-to-use synchronous step-down DC-DC LED driver with high-side current sense capable of driving up to 2A of constant current from an input voltage ranging from 4.5V to 65V. The AL8891 provides high switching frequency up to 2.5MHz to optimize high efficiency, allowing a smaller inductor size and compact form factor solution.
- Input voltage 4.5V to 65V
- VOUT close to VIN rail (up to 99% duty cycle)
- Integrated MOSFETs high-side 200mΩ and low-side 130mΩ
- 2A constant output current
- High-side current sense
- Support both PWM and analog dimming
- Internal compensation without external capacitor
- Cycle-by-cycle current protection
- Diagnosis and fault flag Indicator
- LED open and short protection
