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Key Features
Applications/Uses
| 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) | 0.8 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Low-Dropout 120mA Linear Regulators | Apr 23, 2013 |
Support & Training
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Parameters
| 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) | 0.8 |
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
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 SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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