Diodes Incorporated

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Automotive-Compliant Wide Input Voltage Range, 300mA ULDO REGULATOR

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The AP7375Q 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 AP7375Q family of LDOs offers an EN pin to enable and disable the LDO output. The EN pin can take an input voltage of 45V.

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

The AP7375Q has 1.8V, 3.0V, 3.3V, and 5.0V fixed output voltage versions, and is available in the SOT89, SO-8EP, SOT25, SOT25R and U-DFN2020-6 (SWP) (Type UXC) 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
  • Short-Current Protection Function
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AP7375Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/


  • Powering MCUs and CAN/LIN transceivers
  • Automotive head units
  • EV and HEV battery management systems
  • Body control modules
  • Transmission control units (TCUs)

Product Specifications

Product Parameters

Iq (typ) (µA) 2.1
Iq (max)(?A) 7.5
AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Automotive
Type LDO
Output options Fixed
Iout (A) 0.3
Vin (Max) (V) 45
Vin (Min) (V) 3
Vout (min) 1.8
Fixed Vout (V) 1.8,3,3.3,5
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 125
Enable Active Yes (High)
Channels 1
Output Discharge No
Power Good No
Reverse Protection No
VCTL Function No

Technical Documents

Recommended Soldering Techniques