Diodes Incorporated

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150MA Ultra-Low Quiescent Current LDO with ENABLE

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The AP7351D is a low dropout regulator with high output voltage accuracy. The AP7351D includes a voltage reference, error amplifier, current limit circuit and an enable input to turn it on/off. With the integrated resistor network, fixed output voltage versions can be delivered.

With its ultra-low quiescent current, the AP7351D is well suited for low-power handheld, wearable devices, and other battery-operated devices requiring an extended time period until new battery replacement.

The AP7351D is available in the X2-DFN1010-4 (Type B) and SOT25 packages.


  • Low VIN and Wide VIN Range: 1.4V to 5.5V
  • Guarantee Output Current, 150mA
  • Output Voltage Range: 0.8V to 4.5V
  • VOUT Accuracy: ±1%
  • Ripple Rejection up to 60dB at 1kHz
  • Quiescent Current as Low as 0.5μA
  • Typical Standby Current 0.02μA
  • Totally Lead-Free & and Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)


  • Wearable Electronics
  • Sensor Module for Internet-Of-Things (IOT)
  • Wireless Communication Module
  • Battery-Operated Device
  • Camera
  • Image Sensor

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Fixed
Iout (A) 0.15
Vin (Max) (V) 5.5
Vin (Min) (V) 1.4
Vout (min) 0.8
Vout (max) 4.5
Fixed Vout (V) 0.8, 1.2, 1.5, 1.8, 1.85, 2.5, 2.7, 2.8, 3.0, 3.3, 4.5
Iq (typ) (µA) 0.5
Accuracy 25C 1%
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.35
PSRR (dB) 1kHz 60
Operating Temperature (Ambient) (°C) -40 to 85 (°C)
Enable Active H
Channels 1
Output Discharge yes
Iq (max)(µA) 1
VCTL function no

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