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MAX8873R, MAX8873S, MAX8873T

Low-Dropout 120mA Linear Regulators

Product Details

Key Features

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 6.5
Rated ILOAD (mA) 120
Preset VOUT (V) 2.8
2.84
3.15
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.13
ICC (µA) (max) 150
Output Voltage Noise (µV RMS) (typ) 220
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
0.86
View Less

Simplified Block Diagram

Technical Docs

Data Sheet Low-Dropout 120mA Linear Regulators Apr 23, 2013

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Parameters

Parametric specs for Linear Regulators
VIN (V) (min) 2.5
VIN (V) (max) 6.5
Rated ILOAD (mA) 120
Preset VOUT (V) 2.8
2.84
3.15
# Regulators 1
VDROPOUT @Rated ILOAD (V) (typ) 0.13
ICC (µA) (max) 150
Output Voltage Noise (µV RMS) (typ) 220
Ref. Bypass No
Low Batt./ Pwr. Fail Out No
Watchdog No
Reverse Batt. Protect. Yes
Oper. Temp. (°C) -40 to +85
Package/Pins SOT23/5
Budgetary
Price (See Notes)
0.86

Key Features

  • LP2980 Pin-Compatible SOT23 Package
  • Low, 55mV Dropout Voltage at 50mA IOUT (130mV at 120mA)
  • Low, 73µA No-Load Supply Current
  • Low, 82µA Operating Supply Current (even in dropout)
  • 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

Applications/Uses

  • Audio Systems
  • Cordless Phones
  • Electronic Planners
  • Handheld Instruments (PDAs, Palmtops)
  • Modems
  • Palmtop Computers
  • PCMCIA Cards
  • PCS Telephones

Description

The MAX8873T/S/R and MAX8874T/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, 82µA supply current to remain independent of load, making these devices ideal for battery-operated portable equipment such as cellular phones and cordless phones.

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. Total error on the output is ±3.5%. Output voltages are set on the low side of popular ranges so that power drain is minimized for longer battery life. Other features include low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8874 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.

For dual versions, refer to the MAX8865/MAX8866 data sheet. For low-noise versions with 30µVRMS output noise, refer to the MAX8877/MAX8878.

Simplified Block Diagram

MAX8873R, MAX8873S, MAX8873T, MAX8874R, MAX8874S, MAX8874T: Typical Operating Circuit MAX8873R, MAX8873S, MAX8873T, MAX8874R, MAX8874S, MAX8874T: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet Low-Dropout 120mA Linear Regulators Apr 23, 2013

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.