MAX8864R, MAX8864S, MAX8864T

Low-Dropout, 120mA Linear Regulators

SOT23 Low-Noise, Low-Dropout Regulator

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The MAX8863T/S/R and MAX8864T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 80µA supply current to remain independent of load, making these devices ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems.

The devices feature Dual Mode operation: their output voltage is preset (at 3.15V for the T versions, 2.84V for the S versions, or 2.80V for the R versions) or can be adjusted with an external resistor divider. Other features include low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8864 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 5-pin SOT23 package.
MAX8863R, MAX8863S, MAX8863T, MAX8864R, MAX8864S, MAX8864T: Functional Diagram MAX8863R, MAX8863S, MAX8863T, MAX8864R, MAX8864S, MAX8864T: Functional Diagram Enlarge+

Key Features

  • Low Cost
  • Low, 55mV Dropout Voltage at 50mA IOUT
  • Low, 68µA No-Load Supply Current
    Low, 80µA Operating Supply Current (even in dropout) 
  • Low, 350µVRMS Output Noise
  • Miniature External Components
  • Thermal Overload Protection
  • Output Current Limit
  • Reverse Battery Protection
  • Dual Mode Operation: Fixed or Adjustable (1.25V to 6.5V) Output 
  • Low-Power Shutdown


  • Cellular Telephones
  • Cordless Telephones
  • Electronic Planners
  • Hand-Held Instruments
  • Modems
  • Palmtop Computers
  • PCMCIA Cards
  • PCS Telephones

See parametric specs for Linear Regulators (134)

Part NumberVIN

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Request Reliability Report for: MAX8864R  MAX8864S  MAX8864T 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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