Texas Instruments LP2981IM5-3.0/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.30 | $1.30 |
| 15+ | $1.26 | $18.90 |
| 25+ | $1.23 | $30.75 |
| 50+ | $1.16 | $58.00 |
| 100+ | $1.03 | $103.00 |
| N+ | $0.21 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 3V |
| 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 Texas Instruments LP2981IM5-3.0/NOPB is a fixed 3.0V low dropout linear regulator delivering up to 100mA of output current. Housed in a compact SOT-23-5 package, it features a low dropout voltage of 0.37V at full load and a quiescent current of just 95 μA, making it an efficient choice for battery-operated and noise-sensitive applications. With 63dB PSRR at 1kHz, it provides clean, stable power for analog and digital circuits.
- Extended Battery Life: Ultra-low 95 μA quiescent current minimizes power draw in standby and light-load conditions.
- Stable Output Under Load: Low dropout of 0.37V at 100mA ensures regulation even with marginal input-to-output voltage margins.
- Clean Power Delivery: 63dB PSRR at 1kHz filters supply noise, protecting sensitive analog and RF circuitry.
- Compact Footprint: SOT-23-5 package saves board space for space-constrained designs.
Battery-Powered Portable Devices
With a low quiescent current of 95 μA and a 3.0V fixed output, the LP2981 is ideal for extending battery life in remote controls, wearables, and portable sensors where standby power is critical.
Noise-Sensitive Analog Circuits
The 63dB PSRR at 1kHz helps reject power supply noise, making it suitable for powering precision op-amps, ADCs, and audio codecs in instrumentation and audio equipment.
Microcontroller Power Supply
Provide a clean, stable 3.0V rail for low-power MCUs and digital logic, ensuring reliable operation even with fluctuating input from batteries or unregulated adapters.
Automotive Interior Electronics
The SOT-23-5 package and 100mA capability suit always-on modules like tire pressure sensors or keyless entry receivers, where low dropout maintains regulation during cranking conditions.
Industrial Sensor Interfaces
Use the LP2981 to power bridge sensors or signal conditioners, where the low dropout voltage (0.37V) ensures consistent performance even when the input rail is close to the output.
Communication Modules
Power short-range RF transceivers or Zigbee modules with a stable 3.0V supply, leveraging the low quiescent current to maximize sleep-mode battery life.
- Q: What is the output voltage of the LP2981IM5-3.0/NOPB?
- A: This LDO provides a fixed 3.0V output.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 3V up to 16V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.37V at a 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 95 μA.
- Q: What package is available?
- A: It is available in a SOT-23-5 package.
LP2981IM5-3.0/NOPB.pdf
- Q: What is the output voltage of the LP2981IM5-3.0/NOPB?
- A: This LDO provides a fixed 3.0V output.
- Q: What is the maximum output current?
- A: The maximum output current is 100mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 3V up to 16V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.37V at a 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 95 μA.
- Q: What package is available?
- A: It is available in a SOT-23-5 package.
