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AIC1647

Features: 1.2MHz Fixed Frequency Current-Mode PWM Operation.Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mAAdjustable Output Voltage up to 30VLow Supply Current: 70uAMatches LED CurrentRequire Tiny Inductors and CapacitorsTiny SOT23-5 Package ApplicationCellular PhonesPDAsDigital Still CamerasH...

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SeekIC No. : 004279059 Detail

AIC1647: Features: 1.2MHz Fixed Frequency Current-Mode PWM Operation.Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mAAdjustable Output Voltage up to 30VLow Supply Current: 70uAMatches LED CurrentRequire Ti...

AIC1647 Data Sheet

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Part Number:
AIC1647
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

  • 1.2MHz Fixed Frequency Current-Mode PWM Operation.
    Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA
    Adjustable Output Voltage up to 30V
    Low Supply Current: 70uA
    Matches LED Current
    Require Tiny Inductors and Capacitors
    Tiny SOT23-5 Package





    • Application

    Cellular Phones
    PDAs
    Digital Still Cameras
    Handheld Devices
    White LED Display Backlighting




    Pinout

    Connection Diagram




    Specifications

    Input Voltage (VIN)......................................................................... 6V
    SW Voltage................................................................................... 33V
    FB Voltage...................................................................................... 6V
    SHDN Voltage................................................................................. 6V
    Operating Temperature Range.................................... 40°C to 85°C
    Maximum Junction Temperature ...............................................125°C
    Storage Temperature Range..................................... 65°C to 150°C
    Lead Temperature (Soldering, 10 sec)..................................... 260°C




    Description

    AIC1647 is a fixed frequency step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in hand-held devices. Series connection of the LEDs provides identical LED currents resulting in uniform brightness. This configuration eliminates the need for ballast resistors. Low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency.

    AIC1647 is a step-up PWM converter, which includes an internal N-channel MOSFET switch for high efficiency. The high switching frequency, 1.2MHz, allows the use of tiny external components, saves the layout space and cost.

    AIC1647 is available in a space-saving, 5-lead SOT-23-5 package.






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