Texas Instruments LP2981-50DBVR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.36 | $0.36 |
| 15+ | $0.35 | $5.25 |
| 25+ | $0.34 | $8.50 |
| 50+ | $0.32 | $16.00 |
| 100+ | $0.29 | $29.00 |
| N+ | $0.06 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 5V |
| 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 LP2981-50DBVR from Texas Instruments is a fixed 5V LDO regulator delivering up to 100mA. It features a low dropout voltage of 0.37V at full load and a quiescent current of 95µA. The SOT-23-5 package offers a compact solution for space-limited designs. With 63dB PSRR at 1kHz, it ensures clean, stable power for noise-sensitive analog and digital circuits.
- Precision 5V Rail: Fixed output ideal for legacy 5V logic and analog ICs.
- Low Noise Operation: 63dB PSRR at 1kHz filters supply ripple for sensitive applications.
- Low Dropout: 0.37V at 100mA maximizes headroom in 5.5V systems.
- Compact SOT-23-5: Small footprint suitable for portable and embedded designs.
Automotive Sensor Interfaces
5V output with 63dB PSRR at 1kHz provides clean power for automotive pressure and temperature sensors, ensuring accurate readings despite noisy vehicle power rails.
Industrial Process Control
Stable 5V rail for analog-to-digital converters and op-amps in PLCs, where noise rejection is essential for measurement precision.
Portable Test Equipment
Low dropout of 0.37V at 100mA allows operation from a 5.5V supply, maintaining regulation during battery discharge.
Medical Monitoring Devices
Reliable 5V output for patient monitors and pulse oximeters, with low noise characteristics suitable for sensitive analog front-ends.
Networking Equipment
Provides clean 5V for Ethernet PHY transceivers and small switches, reducing bit errors caused by power supply noise.
- Q: What is the output voltage?
- A: Fixed 5V output.
- Q: What is the maximum output current?
- A: 100mA.
- Q: What is the input voltage range?
- A: Not specified in provided data; consult datasheet.
- Q: What is the dropout voltage?
- A: 0.37V at 100mA.
- Q: What is the quiescent current?
- A: 95µA.
- Q: What package is available?
- A: SOT-23-5.
LP2981-50DBVR.pdf
- Q: What is the output voltage?
- A: Fixed 5V output.
- Q: What is the maximum output current?
- A: 100mA.
- Q: What is the input voltage range?
- A: Not specified in provided data; consult datasheet.
- Q: What is the dropout voltage?
- A: 0.37V at 100mA.
- Q: What is the quiescent current?
- A: 95µA.
- Q: What package is available?
- A: SOT-23-5.
