Datasheet Summary
Single Cell 350mA LED Driver
Features
- 350mA Constant Current Output
- 2.8V to 4V Output pliance
- 1- or 2-Cell NiMH or Alkaline Input
- Synchronous Rectification: Up to 90% Efficiency
- Fixed Frequency Operation: 1.3MHz
- Low Quiescent Current: <1mA
- Very Low Shutdown Current: <50µA
- Open LED Output Limited to 4.7V
- VIN Range: 1V to 3.2V
- Dimming Control
- Undervoltage Lockout to Protect Batteries
- Low Profile (0.75mm) 3mm × 3mm Thermally
Enhanced 8-Lead DD and S8 Packages
U APPLICATIO S
- Portable Lighting
- Rechargeable Flashlights
DESCRIPTIO
The LTC®3490 provides a constant current drive for 1W LED applications. It is a high efficiency boost converter that...