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Linear Regulators (LDOs) 
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MAX8867
Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23
Industry's Lowest Dropout in SOT23, Low-Noise 150mA Regulator
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Key Features
Applications/Uses
Parametric specs for Linear Regulators
| VIN (V) (min) | 2.5 |
| VIN (V) (max) | 5.5 |
| Rated ILOAD (mA) | 150 |
| Preset VOUT (V) | 3 5 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.16 |
| ICC (µA) (max) | 180 |
| Output Voltage Noise (µV RMS) (typ) | 20 |
| Ref. Bypass | Yes |
| 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 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 | Sep 27, 2002 | |
| App Note | Logic-Level Translation | ||
| App Note | Isolated SLIC supply | ||
| Tutorial | Reduce the Chances of Human Error: Part 1, Power and Ground | ||
| Tutorial | Improved Power-Supply Rejection for Linear Regulators |
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 .
Parameters
Parametric specs for Linear Regulators
| VIN (V) (min) | 2.5 |
| VIN (V) (max) | 5.5 |
| Rated ILOAD (mA) | 150 |
| Preset VOUT (V) | 3 5 |
| # Regulators | 1 |
| VDROPOUT @Rated ILOAD (V) (typ) | 0.16 |
| ICC (µA) (max) | 180 |
| Output Voltage Noise (µV RMS) (typ) | 20 |
| Ref. Bypass | Yes |
| 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
- Low Output Noise: 30µVRMS
- Low 55mV Dropout at 50mA Output (165mV at 150mA output)
- Low 85µA No-Load Supply Current
- Low 100µA Operating Supply Current (Even In Dropout)
- Thermal-Overload and Short-Circuit Protection
- Reverse Battery Protection
- Output Current Limit
- Preset Output Voltages (±1.4% Accuracy)
- 10nA Logic-Controlled Shutdown
Applications/Uses
- Cell Phones
- Cordless Phones
- Electronic Planners
- Handheld Instruments (PDAs, Palmtops)
- Modems
- Palmtop Computers
- PCMCIA Cards
- PCS Telephones
Description
The MAX8867/MAX8868 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin.
Designed with an internal P-channel MOSFET pass transistor, the MAX8867/MAX8868 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8868 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 packages.
Designed with an internal P-channel MOSFET pass transistor, the MAX8867/MAX8868 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8868 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 packages.
Technical Docs
| Data Sheet | Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 | Sep 27, 2002 | |
| App Note | Logic-Level Translation | ||
| App Note | Isolated SLIC supply | ||
| Tutorial | Reduce the Chances of Human Error: Part 1, Power and Ground | ||
| Tutorial | Improved Power-Supply Rejection for Linear Regulators |
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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