Diodes Incorporated
X2 DFN1010 4

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250MA High PSRR Low Noise LDO with ENABLE

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The AP7353 is a low dropout regulator with high output voltage accuracy, low RDSON, high PSRR, low output noise and low quiescent current. This regulator is based on a CMOS process.

The AP7353 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 high PSRR, good line regulation and fast load transient response, the AP7353 is well suited for handheld/wearable
communication equipments which require stable voltage sources.

The AP7353 is packaged in X1-WLB0707-4 (Type A1) which allows for smallest footprint and dense PCB layout.


  • Low VIN and Wide VIN Range: 2.0V to 5.5V
  • Guarantee Output Current, 250mA
  • VOUT Accuracy ±1%
  • Ripple Rejection 90dB at 20Hz to 20kHz, IOUT = 10mA
  • Low Output Noise, 10μVrms from 10Hz to 100kHz at 10mA
  • Quiescent Current as Low as 18μA (Typ.)
  • VOUT Fixed 1.8V to 4.5V
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free, Green Device (Note 3)


  • Smart Phone/PAD
  • RF Supply
  • Cameras
  • Portable Video
  • Portable Media Player
  • Wireless Adapter
  • Wireless Communication

Product Specifications

Product Parameters

Iq (max) (µA) 27
Iq (typ) (?A) 18
AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Type LDO
Output options Fixed
Iout (A) 0.25
Vin (Max) (V) 5.5
Vin (Min) (V) 2
Vout (min) 1.8
Vout (max) 12
Fixed Vout (V) 1.8, 2.5, 2.8, 2.85, 2.9, 3.0, 3.1, 3.2, 3.3, 3.6, 4.5
Accuracy 25C 1
Noise uV RMS 10-100 kHz 10
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.117
PSRR (dB) 1kHz 90
Operating Temperature (Ambient) (°C) -40 to 85
Enable Active Yes (High)
Channels 1
Output Discharge Yes, No
Power Good No
Reverse Protection No
VCTL Function No

Technical Documents

Evaluation Boards and User Guides

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2568 2022-03-29 2022-03-29 Qualified Additional Assembly & Test (A/T) Sites, Bill of Material, and updated Data Sheets for Package Outline Dimension Change