High Efficiency, Wide Voltage Range 30-LED Driver
- Wide input range: 2.7V~25V
- Drive up to 30 LEDs
- KTD314 up to 20 LEDs (10s2p)
- KTD315 up to 30 LEDs (10s3p)
- Up to 92% efficiency
- High frequency step-up converter (800kHz)
- Highly integrated solution
- Integrated 40V Power MOSFET
- Internal compensation and soft start
- Integrated current sinks: KTD314 – 2 channels, KTD315 – 3 channels
- ±2% Typ. current accuracy
- 1.5% Typ. current matching
- PWM dimming with <1µs delay time
- Low operating quiescent current (500µA)
- LED open/short protection
- Both internal fixed and external adjustable Over-voltage protection
- Cycle-by-cycle inductor current limit (2.5A)
- 0.1 µA shutdown current
- Pb-free Package: TQFN33-16
- -40 to +85˚C Temperature Range
Applications
- Netbook
- MID
- GPS
- Portable media players
- 1-, 2-, 3-, 4-cell Li Ion LED applications
Key Electrical Specifications
Vin(Min) |
Vin(Max) |
Max. Current per Channel |
Channels |
Control Type |
Package |
2.7V |
5.5V |
20mA |
2 |
PWM |
TQFN33-16 |
Typical Application Diagram