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Manufacturer Part #


MIC3975 Series ADJ Output Voltage 750 mA µCap Low Voltage LDO Regulator - MSOP-8

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Product Variant Information section
Date Code: 1724
Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 2.25V
Input Voltage-Max: 16V
Output Voltage Range: 1.24V to 16V
Output Voltage Fixed: 1.24V
Dropout Voltage-Max: 500mV
Output Current-Max: 750mA
Rated Power: 1.25W
Tolerance (%): ±1%
Operating Temp Range: -40°C to +125°C
Regulator Topology: Adjustable
No. of Outputs: Single
Load Regulation (%): 1%
Current - Limit: 2.5A
Line Regulation (%): 0.5%
Package Style:  MSOP-8
Mounting Method: Surface Mount
Features & Applications

The MIC3975YMM is a 750 mA low-dropout linear voltage regulators that provide low-voltage,high-current output from an extremely small package.Utilizing Micrel ’s proprietary Super Beta PNP ™ pass element,,the MIC3975 offers extremely low dropout (typically 300 mV at 750 mA)and low ground current (typically 6.5 mA at 750 mA).

The MIC3975 is ideal for PC add-in cards that need to convert from standard 5 V to 3.3 V or 3.0 V,3.3 V to 2.5 V or 2.5 V to 1.8 V or 1.65 V.A guaranteed maximum dropout voltage of 500 mV over all operating conditions allows the MIC3975 to provide 2.5 V from a supply as low as 3.0 V and 1.8 V or 1.65 V from a supply as low as 2.25 V.

The MIC3975 is fully protected with overcurrent limiting, thermal shutdown,and reversed-battery protection.Fixed voltages of 5.0 V,3.3 V,3.0,2.5 V,1.8 V,and 1.65 V are available.An adjustable output voltage option is available for voltages down to 1.24 V.

Key Features :

  • Fixed and adjustable output voltages to 1.24 V
  • 300 mV typical dropout at 750 mA
  • Ideal for 3.0 V to 2.5 V conversion
  • Ideal for 2.5 V to 1.8 V or 1.65 V conversion
  • Stable with ceramic capacitor
  • 750 mA minimum guaranteed output current
  • 1%initial accuracy
  • Low ground current
  • Current limiting and thermal shutdown
  • Reversed-battery protection
  • Reversed-leakage protection
  • Fast transient response
  • Low-profile MSOP-8

Applications :

  • Fiber optic modules
  • LDO linear regulator for PC add-in cards
  • PowerPC ™ power supplies
  • High-efficiency linear power supplies
  • SMPS post regulator
  • Multimedia and PC processor supplies
  • Battery chargers
  • Low-voltage microcontrollers and digital logic
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Product Variant Information section