High Efficiency, Wide Voltage Range 30-LED Driver

Features

  • 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