MAX8863R, MAX8863S, MAX8863T:Low-Dropout, 120mA Linear Regulators

SOT23 Low-Noise, Low-Dropout Regulator

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.

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
MAX8863R, MAX8863S, MAX8863T, MAX8864R, MAX8864S, MAX8864T: Functional Diagram
MAX8863R, MAX8863S, MAX8863T, MAX8864R, MAX8864S, MAX8864T: Functional Diagram
Applications/Uses
  • Cellular Telephones
  • Cordless Telephones
  • Electronic Planners
  • Hand-Held Instruments
  • Modems
  • Palmtop Computers
  • PCMCIA Cards
  • PCS Telephones
DataSheet
titleDownload file
MAX8863-MAX8864T Data SheetMAX8863-MAX8864T.pdf
Parametrics
Part NumberRegulatorsVIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Output Voltage Noise
(µV RMS)
Ref. BypassLow Batt./ Pwr. Fail OutWatchdogReverse Batt. Protect.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtypmaxtypSee Notes
MAX886312.55.52.8
2.84
3.15
1.255.50.13120120170220NoNoNoYes-40 to +85SOT/5$0.71 @1k
MAX8864SOT/5
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8863REUK+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8863REUK+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX8863REUK-TNo Longer AvailableMAX8863REUK+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX8863-MAX8864T.pdf MAX8864
MAX8863T.pdf MAX8863
MAX8863R.pdf MAX8863