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Wide Input Voltage Range, 300mA ULDO Regulator

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The DIODES™ AP7375 series is a wide input voltage range (45V), low quiescent current (2.1uA), low-dropout linear regulator (LDO) able to provide 300mA load current. The AP7375 family LDO offers an EN pin that takes an input voltage of 45V to enable and disable the LDO output.

It features very fast response times against line voltage transient and load current transient, and ensures no overshoot voltage during start-up and short-circuit recovery. The device also has integrated short-circuit and thermal shutdown protection.

The AP7375 has 1.8V, 3.0V, 3.3V, and 5.0V fixed output voltage versions, and is available in the SOT23, SOT25, and SOT89 packages.


  • Wide Input Voltage Range: 3V to 45V
  • Maximum Output Current: 300mA
  • Low Dropout Voltage:
    • VDROP = 35mV@IOUT = 10mA (Typ.)
    • VDROP = 350mV@ IOUT = 100mA (Typ.)
  • Low Quiescent Current: 2.1μA (Typ.)
  • Fixed Output Voltages: 1.8V, 3.0V, 3.3V and 5.0V
  • High Output Voltage Accuracy: ±2%
  • High PSRR: 85dB@1kHz
  • Excellent Line/Load Regulation
  • Thermal Shutdown Function
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.



  • Battery-powered equipment
  • Smoke detectors and sensors
  • Microcontroller applications
  • Home appliances

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Fixed
Iout (A) 0.3
Vin (Max) (V) 45
Vin (Min) (V) 3
Vout (min) 1.8
Vout (max) 5
Fixed Vout (V) 1.8, 3, 3.3, 5
Iq (typ) (µA) 2.1
Accuracy 25C 2%
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.35
PSRR (dB) 1kHz 85
Operating Temperature (Ambient) (°C) -40 to 85 (°C)
Enable Active H
Channels 1
Output Discharge no
Iq (max)(µA) 5
VCTL function no

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