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The DIODES AP7583Q/AQ series are 300mA LDO for automotive battery-powered applications. The AP7583Q features 2.5µA quiescent current at light loads. Therefore, the AP7583Q/AQ are suitable solution to supply always power-on components, such as microcontroller (MCUs) and controller area network (CAN) transceivers. 

The AP7583Q/AQ have features of wide input-voltage range, high accuracy, low-dropout voltage, current limit and ultra-low quiescent current, which make it ideal for automotive applications. The AP7583AQ has power-good indicator. 

The IC consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current-limit circuit for current protection, and a chip-enable circuit. 

The AP7583Q/AQ both have 3.3V and 5V fixed output-voltage version, and adjustable version. 

The AP7583Q is available in space-saving W-DFN2020-6 (SWP) (Type A1) package, and AP7583AQ has good power dissipation packages of MSOP-8EP, W-DFN2020-6 (SWP) (Type A1), and TO252-4 (Type C).


  • Wide Input-Voltage Range: 3V to 42V
  • Maximum Output Current: 300mA
  • Low-Dropout Voltage: VDROP = 320mV @IOUT = 300mA (Typ)
  • Low Quiescent Current:
    • AP7583Q is 2.5μA (Typ)
    • AP7583AQ is 3μA (Typ)
  • High Output-Voltage Accuracy: ±5%
  • Compatible with Low ESR Ceramic Capacitor
  • Excellent Line/Load Regulation
  • Thermal Shutdown Function
  • Short Current Protection Function
  • Output Current Limit
  • AP7583AQ with Power-Good (PG) Output for Supply Monitoring and for Sequencing of Other Supplies
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The AP7583Q/AQ are suitable for automotive applications requiring specific change control; these parts are AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/


  • Powering MCUs and CAN/LIN transceivers
  • Automotive head units
  • EV and HEV battery management systems
  • Body control modules
  • Transmission control units (TCU)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Adjustable & Fixed
Iout (A) 0.3
Vin (Max) (V) 42
Vin (Min) (V) 3
Vout (min) 1.2
Vout (max) 5
Fixed Vout (V) 3.3,5
Adjustabe VFB (V) 1.207
Iq (typ) (µA) 3
Accuracy 25C 1.50%
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.5
PSRR (dB) 1kHz 70
Operating Temperature (Ambient) (°C) -40 to 85 (°C)
Enable Active H
Channels 1
Output Discharge no
Iq (max)(µA) 6
VCTL function no

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