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The AP7348 is a 4 channel 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 AP7348 includes two voltage references, and four channels with each having an error amplifier, foldback current limiting, a discharge circuit and an independent resistor network to determine the fixed output voltage. The over temperature sensing is for each channel with all 4 channel being disabled during a temperature fault condition. The device has two enable inputs with EN1 controlling both VOUT1 and VOUT3 leaving VOUT2 and VOUT4 to be controlled by EN2. During disable the two associated channels will discharge.

With its low power consumption and line and load transient response, the AP7348 is well suited for low power handheld communication equipment.
The AP7348 is provided in the X1-DFN1612-8 (Type B) package allowing for a small footprint and a dense PCB layout.


  • Smart Phone/Tablet
  • WIFI Access Points
  • Communication Module
  • Camera Module, Appliances
  • RF Supply for IOT/LPWAN


  • Low VIN and Wide VIN Range: 1.7V to 5.25V
  • Each Channel Output Current: 300mA
  • VOUT Accuracy ±1%
  • Ripple Rejection 75dB at 1kHz
  • Low Output Noise, 60μVrms from 10Hz to 100kHz
  • Total 4 Channel Quiescent Current is Typically 160μA
  • VOUT Fixed 1.2V to 3.6V
  • 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, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Product Specifications

Product Parameters

Features High PSRR
IOUT 0.3 A
VIN (Max) 5.25V V
VIN (Min) 1.7 V
VOUT 1.2, 1.5, 1.8, 2.5, 2.8 ,3.0, 3.3, 3.6 V
IQ 40 µA
PSRR 75 dB
VDROPOUT (Max) 0.25 V
Operating Temperature (Ambient) -40 to 85
Enable Active H
Channels 4

Technical Documents

Recommended Soldering Techniques



Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP7348D-1218RS4-7 Digi-Key Electronics 5000 8/8/2020 Buy Now United States