LDO Regulator Features & Applications

High-Performance Low Dropout (LDO) Solutions

Microchip's High-Performance Low Dropout (LDO) voltage regulators offer a wide variety of solutions including ultra-small packaging, high output current, high input voltage capability, low quiescent current and low-noise performance.

LDO Features

  • Better Efficiency – enhance the efficiency by providing lower quiescent current (IQ) and lower dropout voltages across the input and output. Target applications include always-on devices, camera modules, low-output-voltage core power supply applications and low-power sensors.
  • Smaller Solution Size – minimize solution size by providing capacitor-less (capless) LDOs and multiple output (combo) LDOs. Target applications include touch screens, LCD controllers, camera modules, ICs requiring multiple power rails and sensors.
  • Noise Performance – enhance the noise performance by providing high PSRR, ultra-low output noise and fast transient response. Target applications include camera sensors, audio DSPs, Bluetooth®, wireless transceivers and noise-sensitive mixed-signal ICs.

LDO Applications


  • MIC943XX Family (Ripple Blocker™ Technology)
    • > 60 dB PSRR @ 40 kHz to 5 MHz


  • MIC528X Series, MAQ528X
    • Input voltage up to 120 V
  • MIC2975X Series
    • Output current up to 7.5 A

Portable Equipment

  • MCP1711
    • Capless LDO, 1×1 mm DFN
  • MCP5501/2/3/4
    • 300 mA, 1×1 mm DFN

Battery-Powered Equipment

  • MCP1703A
    • Low IQ of 2 μA
    • Wide input voltage up to 16 V

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