SM74501 (ACTIVE)

Ultra-Low Quiescent Current LDO Voltage Regulator



The SM74501 ultra-low quiescent current regulator features low dropout voltage and low current in the standby mode. With less than 15 μA quiescent current at a 100 μA load, the SM74501 is ideally suited for photovoltaic and other battery operated systems. The SM74501 retains all of the features that are common to low dropout regulators including a low dropout PNP pass device, short circuit protection, reverse battery protection, and thermal shutdown. The SM74501 has a 40V maximum operating voltage limit, a −40°C to +125°C operating temperature range, and ±3% output voltage tolerance over the entire output current, input voltage, and temperature range. The SM74501 is available in SOT–223 surface mount package.


  • Renewable Energy Grade
  • Ultra Low Quiescent Current (IQ ≤ 15 μA for IO = 100 μA)
  • Fixed 5.0V with 50 mA Output
  • ±2% Initial Output Tolerance
  • ±3% Output Tolerance Over Line, Load, and Temperature
  • Dropout Voltage Typically 200 mV @ IO = 50 mA
  • Reverse Battery Protection
  • −50V Reverse Transient Protection
  • Internal Short Circuit Current Limit
  • Internal Thermal Shutdown Protection
  • 40V Operating Voltage Limit

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Parametrics Compare all products in Single Channel LDO

Iout (Max) (A)
Output Options
Adjustable Output