The new AL3050 from Diodes Inc., is a current-mode boost LED driver for portable devices which offers a programmable dimming control function.
Featuring an integrated 30V power MOSFET and Schottky diode, the AL3050 can drive as many as eight LEDs in series. The implementation of a complete driver circuit based on the ASL3050 only requires the addition of four external components, which means that the total system footprint is small.
The driver operates at a high efficiency of up to 85%, and this, combined with its small size, make it ideal for LED backlighting systems
in portable equipment powered by a single lithium-ion cell.
Brightness control is implemented by the AL3050 via either PWM or single-wire digital dimming, giving accurate LED current control from one pin.
The AL3050 offers under-voltage lock- out, over-voltage, over-current and thermal protection functions.
- 28V open-LED protection for up to eight LEDs
- 200mV reference accurate to ±3%
- 750kHz switching frequency
- Up to 100:1 PWM dimming ratio
- Integrated loop compensation
- Soft start
- Operating-temperature range:
-40°C to 85°C
- Internet of Things end nodes
- Portable media players
- Mobile devices
- GPS receivers
- Backlights for small LCD displays
|Part Number||Minimum Input Voltage||Maximum Input Voltage||Maximum Output Voltage||LED Current||Quiescent Current|