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Automotive Compliant 500mA High PSRR Low Noise LDO With Enable

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The DIODES™ AP7347DQ is a low dropout regulator with high output voltage accuracy, low RDS(on), high PSRR, low output noise, and low quiescent current. This regulator is based on a CMOS process. The AP7347DQ includes a voltage reference, error amplifier, current limit circuit, and an enable input to turn it on and off. With the integrated resistor network, fixed output voltage versions can be delivered. With its low power consumption and line and load transient response, the AP7347DQ is well-suited for noise sensitive automotive equipment. The AP7347DQ is packaged in the SOT25 (Type A1) and WDFN2020-6 (wettable) packages, which allow for the smallest footprint and a dense PCB layout.


  • Low VIN and Wide VIN Range: 1.7V to 5.5V
  • Guarantee Output Current: 500mA
  • VOUT Accuracy ±1%
  • Ripple Rejection 75dB at 1kHz
  • Low Output Noise, 60µVrms from 10Hz to 100kHz
  • Quiescent Current as Low as 60µA
  • VOUT Fixed 0V to 5.0V
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AP7347DQ is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.



  • Infotainment power supplies
  • Automotive RF supplies
  • Cameras
  • Automotive POL in ADAS
  • Automotive wireless communication systems

Product Specifications

Product Parameters

AEC Qualified yes
Compliance (Only Automotive supports PPAP) Automotive
Output Current (A) 0.5 A
Dropout Voltage Max (V) 0.32 V
Quiescent Current Typ (mA) 60 µA
OperatingInputVoltage Min (V) 1.5 V
OperatingInputVoltage Max (V) 5.5 V
Output Voltage (V) 1.0, 1.05, 1.1, 1.2, 1.5, 1.8, 2.2, 2.5, 2.8, 2.9, 3.3, 5.0 V
Operating Temperature (Ambient) (°C) -40 to 125 ºC
Operating Temperature (ºC) -40 to 125 Junction ºC

Technical Documents

Recommended Soldering Techniques