Texas Instruments LP2981A-28DBVT
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 15+ | $0.86 | $12.90 |
| 25+ | $0.85 | $21.25 |
| 50+ | $0.80 | $40.00 |
| 100+ | $0.71 | $71.00 |
| N+ | $0.14 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Marketplace | Cut Tape (CT) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.37V @ 100mA |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 95 µA |
| Current - Supply (Max) | 1.7 mA |
| PSRR | 63dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |  |
The LP2981A-28DBVT from Texas Instruments is a fixed 2.8V low-dropout linear regulator delivering up to 100mA. Its ultra-low 95µA quiescent current and 0.37V dropout voltage make it ideal for battery-powered and portable applications. The SOT-23-5 package ensures a compact footprint, while 63dB PSRR at 1kHz provides clean, stable power for sensitive analog circuits.
- Extended Battery Life: 95µA quiescent current minimizes standby power draw in portable devices.
- High Efficiency at Low Dropout: 0.37V dropout at 100mA allows operation close to the battery end-of-life voltage.
- Compact SOT-23-5 Package: Saves board space in space-constrained designs.
- Excellent Noise Rejection: 63dB PSRR at 1kHz ensures stable output for analog and RF circuits.
Battery-Powered IoT Sensors
The 2.8V output and 95µA quiescent current make it ideal for always-on sensor nodes, extending battery life in wireless environmental monitoring.
Portable Medical Devices
With a low dropout of 0.37V, the LP2981A-28DBVT maintains a stable 2.8V rail even as batteries discharge, ensuring reliable operation of glucose monitors and pulse oximeters.
Wearable Electronics
The SOT-23-5 package fits compact PCB layouts in smartwatches and fitness bands, providing clean power to low-power MCUs and RF transceivers.
Automotive Body Electronics
Its wide input range tolerates voltage transients in 12V automotive systems, powering sensors and control modules with a regulated 2.8V supply.
Industrial Control Interfaces
The 63dB PSRR at 1kHz rejects supply noise, making it suitable for analog front-ends in industrial process controllers.
Reference Voltage for ADCs
The low-noise output can serve as a stable reference for 8-bit ADCs in data acquisition systems, improving measurement accuracy.
- Q: What is the output voltage of the LP2981A-28DBVT?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.8V up to 16V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.37V at 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 95µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
LP2981A-28DBVT.pdf
- Q: What is the output voltage of the LP2981A-28DBVT?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.8V up to 16V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.37V at 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 95µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
