Diodes Incorporated
SO 8

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AP2008 (Obsolete)

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The AP2008 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip, mainly designs for power-supply regulator. All the functions included an on-chip 0.77V reference output, an error amplifier, an adjusted oscillator, a soft-start, UVLO, SCP circuitry, and a push-pull output circuit. Switching frequency can be adjustable by trimming CT. During low VCC situation, the UVLO makes sure that the outputs are off until the internal circuit is operational normally.


  • PWM Buck Control Circuitry
  • Operating voltage can be up to 20V
  • Under voltage Lockout (UVLO) Protection
  • Short Circuit Protection (SCP)
  • Soft-start circuit
  • Variable Oscillator Frequency -- 300Khz Max
  • 0.77V voltage reference Output
  • 8-pin SOP package
  • SOP-8L: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant
  • Application(s)

  • Backlight inverter
  • LCD Monitor
  • XDROM, XDSL Product
  • DC/DC converters in computers, etc.
  • Product Specifications

    Product Parameters

    Efficiency (%) 90
    Frequency (Hz) 300K ADJ
    MaximumInput Voltage (V) 20
    MinimumInput Voltage (V) 3.6
    Output Voltage (V) 0.77 to ADJ
    Type Buck

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