Texas Instruments LP2981IM5-5.0/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.08 | $1.08 |
| 15+ | $1.05 | $15.75 |
| 25+ | $1.03 | $25.75 |
| 50+ | $0.97 | $48.50 |
| 100+ | $0.86 | $86.00 |
| N+ | $0.17 | 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 LP2981IM5-5.0/NOPB is a precision low-dropout linear regulator from Texas Instruments, designed to deliver a fixed 5.0V output with a maximum current of 100mA. It features a very low dropout voltage of just 0.37V, enabling efficient operation even when the input supply is close to the output voltage. With a quiescent current of 95 µA and a PSRR of 63dB at 1kHz, it provides a good balance between power efficiency and noise suppression. The compact SOT-23-5 package makes it easy to integrate into space-constrained designs.
- High Efficiency in Low-Headroom Designs: The low 0.37V dropout voltage allows operation from batteries or rails that are only slightly above 5.0V, reducing power dissipation.
- Effective Noise Suppression: With 63dB PSRR at 1kHz, it provides a clean output for noise-sensitive analog and digital circuits.
- Stable 5.0V Rail: Provides a precise and stable 5.0V output, essential for legacy logic and sensor interfaces.
- Compact and Reliable: The SOT-23-5 package is ideal for portable and space-limited applications, backed by Texas Instruments' quality.
Noise-Sensitive Audio Circuits
The 63dB PSRR at 1kHz ensures that power supply noise is effectively suppressed, making the LP2981IM5-5.0/NOPB an excellent choice for powering audio codecs and operational amplifiers in portable audio players.
Battery-Powered Instruments
With a low dropout of 0.37V, this LDO can efficiently regulate a 5.0V rail from a partially discharged battery, maximizing usable battery capacity in handheld multimeters and field instruments.
Automotive Infotainment
Its stable 5.0V output is ideal for powering CAN transceivers and sensor interfaces in automotive infotainment systems, where a reliable and clean supply is critical for data integrity.
Industrial Control Systems
The regulator's ability to provide a precise 5.0V supply from a noisy 12V industrial bus makes it suitable for powering logic circuits and microcontrollers in PLCs and motor control units.
Networking Equipment
For routers and switches, the LP2981IM5-5.0/NOPB provides a clean 5.0V rail for PHY transceivers, reducing bit errors caused by power supply noise and ensuring stable network communication.
Portable Medical Monitors
The low dropout and good PSRR make it a reliable choice for battery-operated patient monitors, ensuring a stable 5.0V supply for the display and signal processing electronics.
- Q: What is the output voltage of the LP2981IM5-5.0/NOPB?
- A: This regulator provides a fixed 5.0V output.
- Q: What is the maximum output current?
- A: It can supply a maximum output current of 100mA.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically only 0.37V at a 100mA load, making it a true low-dropout regulator.
- Q: What is the quiescent current?
- A: The quiescent current is 95 µA, which is suitable for moderate power-saving requirements.
- Q: What is the PSRR performance?
- A: It offers a power supply rejection ratio of 63dB at 1kHz, providing good noise filtering.
- Q: What package is available?
- A: It is available in a small SOT-23-5 package.
LP2981IM5-5.0/NOPB.pdf
- Q: What is the output voltage of the LP2981IM5-5.0/NOPB?
- A: This regulator provides a fixed 5.0V output.
- Q: What is the maximum output current?
- A: It can supply a maximum output current of 100mA.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically only 0.37V at a 100mA load, making it a true low-dropout regulator.
- Q: What is the quiescent current?
- A: The quiescent current is 95 µA, which is suitable for moderate power-saving requirements.
- Q: What is the PSRR performance?
- A: It offers a power supply rejection ratio of 63dB at 1kHz, providing good noise filtering.
- Q: What package is available?
- A: It is available in a small SOT-23-5 package.
