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Manufacturer Part #


MIC5319 Series 2.85 V Fixed Output 500 mA SMT µCap ULDO Regulator - MLF-6

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Product Variant Information section
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Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 2.5V
Input Voltage-Max: 5.5V
Output Voltage Fixed: 2.85V
Dropout Voltage-Max: 400mV
Output Current-Max: 500mA
Package Style:  MLF-6
Mounting Method: Surface Mount
Features & Applications
The MIC5319 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and very low noise while consuming low ground current. Ideal for battery-operated applications, the MIC5319 features 1% accuracy, extremely low-dropout voltage (200mV @ 500mA), and low ground current at light load (typically 90µA). Equipped with a logic-compatible enable pin, the MIC5319 can be put into a zero-off-mode current state, drawing no current when disabled.

The MIC5319 is a µCap design operating with very small ceramic output capacitors for stability, thereby reducing required board space and component cost. The MIC5319 is available in fixed-output voltages and adjustable output voltages in the super-compact 2mm x 2mm MLF leadless package and thin SOT-23-5 package.


  • Ultra-low dropout voltage 200mV @ 500mA
  • Input voltage range: 2.5 to 5.5V
  • Stable with ceramic output capacitor
  • Low output noise 30µVrms
  • Low quiescent current of 90µA total
  • High PSRR, up to 70dB @1kHz
  • Fast turn-on-time 40µs typical
  • High output accuracy:
    • ±1.0% initial accuracy
    • ±2.0% over temperature
  • Thermal shutdown protection
  • Current-limit protection
  • Logic-controlled Enable
  • Tiny 2mm x 2mm MLF package, 500mA continuous
  • Thin SOT-23-5 package, 500mA peak


  • Cellular phones
  • PDAs
  • Fiber optic modules
  • Portable electronics
  • Notebook PCs
  • Audio Codec power supplies
Pricing Section
Global Stock:
On Order:
Factory Stock:Factory Stock:
Factory Lead Time:
12 Weeks
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Multiple Of:
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Product Variant Information section