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Manufacturer Part #


MIC5318 Series 2.8 V Fixed Output 300 mA SMT µCap ULDO Regulator - TMLF-6

ECAD Model:
Mfr. Name: Microchip
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Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 2.3V
Input Voltage-Max: 6V
Output Voltage Fixed: 2.8V
Dropout Voltage-Max: 200mV
Output Current-Max: 300mA
Package Style:  TMLF-6
Mounting Method: Surface Mount
Features & Applications

The MIC5318 is a high performance, single output ultra low drop-out (ULDO™) regulator, offering low total output noise in an ultra-small Thin MLF ® package. The MIC5318 is capable of sourcing 300 mA output current and offers high PSRR and low output noise, making it an ideal solution for RF applications.

The MIC5318 offers 2% initial accuracy, extremely low dropout voltage (110 mV @ 300 mA), and low ground current (typically 85 µA total). The MIC5318 can also be put into a zero-off-mode current state, drawing no current when disabled.

The MIC5318 is available in the 1.6 mm x 1.6 mm Thin MLF ® package, occupying only 2.56 mm 2 of PCB area, fully a 36% reduction in board area when compared to SC-70 and 2 mm x 2 mm MLF ® packages. The MIC5318 has an operating junction temperature range of –40°C to +125°C and is available in fixed and adjustable output voltages in lead-free (RoHS compliant) Thin MLF ® and Thin SOT23-5 packages.


  • Ultra low dropout voltage 110 mV @ 300 mA
  • Input voltage range: 2.3 V to 6.0 V
  • 300 mA guaranteed output current
  • Stable with ceramic output capacitors
  • Ultra low output noise – 30 µVrms
  • Low quiescent current – 85 µA total
  • High PSRR > 70 dB  @ 1 kHz
  • Less than 35 µs turn-on time
  • High output accuracy
    • ± 2% initial accuracy
    • ± 3% over temperature
  • Thermal shutdown and current limit protection
  • Tiny 6-pin 1.6 mm x 1.6 mm Thin MLF ® package
  • Thin SOT23-5 package


  • Mobile Phones
  • PDAs
  • GPS Receivers
  • Portable electronics
  • Digital still and video cameras
Pricing Section
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Factory Lead Time:
7 Weeks
Minimum Order:
Multiple Of:
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