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KTD3117-1

High Efficiency Step-Up 3-Ch LED Driver, 31V OVP

Features Download Datasheet PDF

        • KTD3116-1: 2 strings, 16 LEDs total

        • KTD3117-1: 3 strings, 24 LEDs total

        • High efficiency: up to 90%

        • High frequency step-up converter (800kHz)

        • Wide input range: 2.7V to 5.5V

        • Integrated 40V Power MOSFET

        • Internal compensation and soft start

        • Integrated 2- or 3-channel current sink

        • Preset 20mA full-scale current per channel

        • 1.5% Typ. current matching

        • PWM dimming with < 0.3µs rise/fall time

        • Low quiescent current

        • LED open/short protection

        • 31V LED open-circuit (OVP) threshold

        • Cycle-by-cycle inductor current limit

        • < 1µA shutdown current

        • Pb-free Package: WLCSP-9 1.2mm x 1.2mm

        • -40°C to +85°C Temperature Range

Applications

  • Smartphone

  • PDA

  • 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 3 PMW WLCSP-9

 

Typical Application Diagram

KTD3117-1

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