High Efficiency Step-Up 2-Ch LED Driver, 25V OVP

  • Drive up to 6 LEDs per string
  • KTD3112: 2 strings, 12 LEDs total
  • KTD3113: 3 strings, 18 LEDs total
  • High efficiency: up to 90%
  • High frequency step-up converter (800kHz)
  • Wide input range: 2.7V to 5.5V
  • Integrated 30V Power MOSFET
  • Internal compensation and soft start
  • Integrated 2- or 3-channel current sink
  • Preset max. 20mA/25mA current per channel
  • 1.5% Typ. current matching
  • PWM dimming with < 0.3µs rise/fall time
  • Low quiescent current
  • LED open/short protection
  • 25V LED open-circuit (OVP) threshold
  • Cycle-by-cycle inductor current limit
  • < 1µA shutdown current
  • Pb-free Packages: TQFN33-16, WLCSP-9 1.2mm x 1.2mm
  • -40°C to +85°C Temperature Range

Applications

  • Smartphone
  • PDA
  • GPS
  • Portable media players
  • Other 1-cell Li Ion LED applications

Key Electrical Specifications

Vin(Min) Vin(Max) Max. Current per Channel Channels Control Type Package
2.7V 5.5V 20 or 25mA 2 PWM  TQFN33-16, WLCSP-9

Typical Application Diagram