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Manufacturer Part #


MIC5201 Series 3.3 V Fixed Output 200 mA SMT Low-Dropout Regulator - SOT-223 T/R

ECAD Model:
Mfr. Name: Microchip
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Product Variant Information section
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Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 2.5V
Input Voltage-Max: 26V
Output Voltage Fixed: 3.3V
Dropout Voltage-Max: 400mV
Output Current-Max: 200mA
Rated Power: 0.625W
Operating Temp Range: -40°C to +125°C
Regulator Topology: Fixed
Quiescent Current: 0.01µA
No. of Outputs: Single
Output Noise: 100µV
Load Regulation (%): 0.3%
Current - Limit: 500mA
Line Regulation (%): 0.4%
Package Style:  SOT-223 (TO-261-4, SC-73)
Mounting Method: Surface Mount
Features & Applications
The MIC5201-3.3YS TR is an efficient linear voltage regulator with very low dropout voltage (typically 17 mV at light loads and 200 mV at 100 mA), and very low ground current (1 mA at 100 mA output), offering better than 1% initial accuracy with a logic compatible on-off switching input.

The MIC5201 is designed especially for hand-held battery powered devices, it can be switched by a CMOS or TTL compatible enable signal. This enable control may be connected directly to VIN if unneeded. When disabled, power consumption drops nearly to zero. The ground current of the MIC5201 increases only slightly in dropout, further prolonging battery life. Key MIC5201 features include current limiting, overtemperature shutdown, and protection against reversed battery. The MIC5201 is available in several fixed voltages and accuracy configurations. It features the same pinout as the LT1121 with better performance. Other options are available; contact Micrel for details.


  • High output voltage accuracy
  • Variety of output voltages
  • Guaranteed 200 mA output
  • Low quiescent current
  • Low dropout voltage
  • Extremely tight load and line regulation
  • Very low temperature coefficient
  • Current and thermal limiting
  • Reversed-battery protection
  • Load-dump protection (fixed voltage versions)
  • Zero off-mode current
  • Logic-controlled electronic enable
  • Available in SO-8 and SOT-223 packages


  • Cellular telephones
  • Laptop, notebook, and palmtop computers
  • Battery powered equipment
  • PCMCIA VCC and VPP regulation/switching
  • Bar code scanners
  • SMPS post-regulator/ dc-to-dc modules
  • High-efficiency linear power supplies
Pricing Section
Global Stock:
Factory Stock:Factory Stock:
Factory Lead Time:
52 Weeks
Minimum Order:
Multiple Of:
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Product Variant Information section