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KTD251

Step-Up LED Driver with PWM Control

Features Download Datasheet PDF

        • Wide output range: up to 10 series LEDs

        • Integrated 40V high current switch (800mA limit)

        • High efficiency PWM converter (up to 90%)

        • Low 200mV feedback voltage

        • High accuracy across full load range

        • VIN range: 2.7V to 5.5V

        • LED open-circuit (OVP) protection

          • KTD251: 36V
          • KTD251B: 24V
          • KTD251C: 19V
        • High switching frequency

          • KTD251: 900kHz
          • KTD251B/C: 1.1MHz
        • PWM dimming frequency: 100Hz to 200kHz

        • Simple, small solution size

        • Integrated Soft-start

        • Shutdown Current less than 1µA

        • Small TSOT23-6 Package

        • RoHS and Green compliant

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

Applications

  • LED backlighting

  • Mobile Phones

  • Handheld Devices

  • Digital Photo Frames

  • Automotive Navigation

Key Electrical Specifications

Vin(Min) Vin(Max) Max. Current per Channel Channels Control Type Package
2.7V 5.5V 30mA (@35Vout) 1 PWM TSOT23-6

Typical Application Diagram

KTD251

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