Diodes Incorporated

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300MA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator

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The AP7335A is a 300mA, 5.0V fixed output voltage, low dropout linear regulator with ±1% output voltage accuracy. The device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The device is turned on when EN pin is set to logic high level. The characteristics of low dropout voltage and low quiescent current make it suitable for low power applications, for example, battery powered devices. The typical quiescent current is 35μA. Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. This device is only available as 5.0V fixed version. Please contact your local sales office for any other voltage options. The AP7335A is packaged in SOT25 and DFN2020-6.


  • 300mA Low Dropout Regulator with EN
  • Very low IQ 35μA
  • Fixed output at 5.0V o VIN MIN 5.5V
  • High PSRR: 65dB at 1kHz
  • Fast start-up time 220μs
  • Stable with low ESR, 1μF ceramic output capacitor
  • Excellent Load/Line Transient Response
  • Low dropout 150mV at 300mA
  • Current limit and short circuit protection
  • Thermal shutdown protection
  • Ambient temperature range -40°C to 85°C
  • SOT25, and DFN2020-6 Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant
  • Application(s)

  • Smart Phones
  • MP3/MP4
  • Battery-powered devices
  • Bluetooth headset
  • Battery Charger
  • LCD TV
  • Multifunction Monitors
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Output options Fixed
    Iout (A) 0.3
    Vin (Max) (V) 6
    Vin (Min) (V) 4.3
    Vout (min) 3.3
    Vout (max) 3.3
    Fixed Vout (V) 3.3
    Iq (typ) (µA) 35
    Accuracy 25C 1%
    VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.2
    PSRR (dB) 1kHz 65
    Operating Temperature (Ambient) (°C) -40 to 85 (°C)
    Enable Active H
    Channels 1
    Output Discharge no
    Iq (max)(µA) 80
    VCTL function no

    Related Content


    Technical Documents

    Recommended Soldering Techniques


    RoHS CofC

    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-2642 2023-09-05 2024-03-05 Device End of Life (EOL)
    PCN-2429 2019-11-20 2020-02-20 Additional Qualified (AT) Assembly Test Site + BOM + Top Marking