Diodes Incorporated

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1.2A Low Dropout Regulator with POK

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The AP7167 is a 1.2A, adjustable output voltage, ultra-low dropout linear regulator. The device includes pass element, error amplifier, band-gap reference, current limit and thermal shutdown circuitry. The device is turned on when EN pin is set to logic high level. A Power-OK (POK) output is available for power sequence control. The characteristics of the low dropout voltage and low quiescent current make it suitable for low to medium power applications, for example, laptop computers, audio and video applications, and battery powered devices. The typical quiescent current is approximately 125μA. Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. The AP7167 are available in DFN3030-10 and SO-8 packages.


  • Wide input voltage range: 2.2V – 5.5V
  • 230mV very low dropout at 500mA load
  • 500mV very low dropout at 1A load
  • Very low quiescent current (IQ): 125μA typical
  • Adjustable output voltage range: 0.8V to 5.0V
  • Very fast transient response
  • High PSRR
  • Accurate voltage regulation
  • Current limiting and short circuit protection
  • Thermal shutdown protection
  • Stable with any type output capacitor ≥ 4.7μF
  • Ambient temperature range -40°C to 85°C
  • DFN3030-10 and SO-8EP: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/RoHS Compliant
  • Application(s)

  • Servers and laptops
  • Smart phone and PDA
  • MP3/MP4
  • Bluetooth headset
  • Low and medium power applications
  • FPGA and DSP core or I/O power
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Output options Adjustable
    Iout (A) 1.2
    Vin (Max) (V) 5.5
    Vin (Min) (V) 2.2
    Vout (min) 0.8
    Vout (max) 5.5
    Adjustabe VFB (V) 0.8
    Iq (typ) (µA) 125
    Accuracy 25C 3%
    VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.8
    PSRR (dB) 1kHz 60
    Operating Temperature (Ambient) (°C) -40 to 85 (°C)
    Enable Active H
    Channels 1
    Output Discharge no
    Power Good open drain
    Iq (max)(µA) 180
    VCTL function no

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