Diodes Incorporated
3D W DFN2020 6 SWP Type A1

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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500mA High PSRR Low Noise LDO with Enable

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The AP7347D 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 AP7347D 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 AP7347D is well-suited for noise sensitive automotive equipment.

The AP7347D is packaged in the SOT25 (Type A1) and W-DFN2020- 6 (SWP) (Type A1) (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 1.0V to 5.0V
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • An automotive-compliant part is available under separate datasheet (AP7347DQ)


  • Portable and battery-powered equipment
  • Desktops, Notebooks, and Ultrabooks
  • Tablets and remote controls
  • White goods and appliances

Product Specifications

Product Parameters

Iq (max) (µA) 125
Iq (typ) (?A) 60
AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Type LDO
Output options Fixed
Iout (A) 0.5
Vin (Max) (V) 5.5
Vin (Min) (V) 1.7
Vout (min) 1
Vout (max) 5
Fixed Vout (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
Accuracy 25C 1
Noise uV RMS 10-100 kHz 60
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.32
PSRR (dB) 1kHz 75
Operating Temperature (Ambient) (°C) -40 to 125
Enable Active Yes (High)
Channels 1
Output Discharge Yes
Power Good No
Reverse Protection No
VCTL Function No

Technical Documents

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