Diodes Incorporated
SOT25

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AP139

300MA Low-Noise CMOS LDO

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Description

The AP139 is a positive voltage linear regulator utilizing CMOS technology. The features that include low quiescent current (45μA typ.), low dropout voltage, and high output voltage accuracy, make it ideal for battery applications. EN input connected to the device will produce a low bias current. The space-saving SOT25 package is attractive for “pocket” and “hand held” applications. This rugged device has both thermal shutdown, and current limit protections to prevent device failure under the “worst” operating conditions. In a low noise, regulated supply application, a 10nF capacitor is necessary to be placed in between Bypass and Ground. The AP139 is stable with a low ESR output capacitor of 1.0μF or greater.

Feature(s)

  • Very Low Dropout Voltage
  • Low Current Consumption: Typ. 45μA, max. 60uA
  • Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V 3.3V, and 3.5V
  • Guaranteed 300mA Output
  • Input Range from 2.7 up to 5.5V
  • Thermal Shutdown
  • Current Limiting
  • Stability with Low ESR Capacitors
  • Low Temperature Coefficient
  • Lead Free Package: SOT25
  • SOT25: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/RoHS Compliant
  • Application(s)

  • Personal Communication Devices
  • Home Electric/Electronic Appliances
  • PC Peripherals
  • Battery-Powered Devices
  • Product Specifications

    Product Parameters

    Iq (max) (µA) 60
    Iq (typ) (?A) 45
    AEC Qualified No
    Compliance (Only Automotive supports PPAP) Standard
    Type LDO
    Output options Fixed
    Iout (A) 0.3
    Vin (Max) (V) 5.5
    Vin (Min) (V) 2.7
    Vout (min) 1.5
    Vout (max) 5.5
    Fixed Vout (V) 1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.3, 3.5
    Accuracy 25C 2
    VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.45
    PSRR (dB) 1kHz 75
    Operating Temperature (Ambient) (°C) -40 to 85
    Enable Active Yes (High)
    Channels 1
    Output Discharge No
    Power Good No
    Reverse Protection No
    VCTL Function No

    Related Content

    Packages

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2654 2024-02-15 2024-04-28 Device End of Life (EOL)