AP7368 Series Low-Noise LDO Regulator

AP7368 Series Low-Noise LDO Regulator

Diodes’ low dropout (LDO) regulators feature a selectable 0.5 A / 1 A output current that is optimized for portable applications

Diodes’ AP7368 series LDO linear regulator offers a high PSRR of 80 dB and is optimized for applications that require low-noise voltage rails while occupying a very small space. For increased versatility, the device has a selectable maximum output current of 0.5 A or 1 A. This allows optimized designs for the required output loads which mitigate thermal or protection issues. The built-in current-foldback varies with the output current selection; 60 mA for low-current mode and 110 mA for high-current mode. This alleviates thermal-shutdown cycling during short-circuit fault conditions and helps protect the IC from damage.

The AP7368 has an active-high enable pin. Bringing this pin low disables the LDO and engages an active output-discharge circuit. This ensures that the system/rail always starts up in a known state. The AP7368 is available in the tiny X-DFN1612-8 (Type B) package, features an exposed thermal pad, and occupies a PCB area of 1.2 mm x 1.6 mm.


  • High PSRR: 80 dB at 1 kHz for VOUT ≥1.8 V
    • Rejects line-based noise in audio, video, and RF subsystems
  • Ultra-low dropout voltage: 190 mV (VOUT = 3.3 V, IOUT = 1 A)
    • Maximizes the usable supply voltage range, particularly in battery-powered devices
  • 1.0% output accuracy range: -40°C to +85°C
    • Maintains accuracy under all conditions
  • Wide input voltage range: 1.7 V to 5.5 V
    • Supports standard rails and core-to-core LDO POL applications
  • Small footprint, low thermal impedance X1-DFN1612-8 package (JC = +15.4°C/W)
    • Suitable for high-power-density POL equipment

more information: https://www.diodes.com/part/view/AP7368/

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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