National Semiconductor LP2981AIM5-2.9
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.24 | $0.24 |
| 15+ | $0.23 | $3.45 |
| 25+ | $0.23 | $5.75 |
| 50+ | $0.21 | $10.50 |
| 100+ | $0.19 | $19.00 |
| N+ | $0.04 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 2.9V |
| 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 |
The LP2981AIM5-2.9 from National Semiconductor is a fixed 2.9V low dropout regulator capable of supplying 100mA. It features a low dropout voltage of 0.37V at full load and a quiescent current of 95 µA. With a PSRR of 63dB at 1kHz, it provides excellent noise rejection for sensitive analog and RF applications. The SOT-23-5 package makes it ideal for compact designs.
- Excellent Noise Rejection: 63dB PSRR at 1kHz ensures clean power for sensitive circuits.
- Low Power Consumption: 95 µA quiescent current extends battery life.
- Stable Output: Fixed 2.9V output with 100mA capability.
- Compact SOT-23-5: Small footprint for space-constrained PCBs.
Noise-Sensitive Analog Circuits
With 63dB PSRR at 1kHz, this LDO effectively filters power supply noise for precision analog sensors and amplifiers.
Battery-Powered Instruments
The 95 µA quiescent current and 2.9V output are well-suited for portable instruments requiring stable voltage from a 3V battery.
Audio Codec Power
Clean 2.9V rail with high PSRR reduces audible noise in portable audio codecs and DACs.
Wireless Communication Modules
Provides stable power for RF transceivers, minimizing voltage fluctuations that could affect signal integrity.
Industrial Sensor Interfaces
Reliable 100mA output with low dropout ensures consistent operation of industrial sensor interface circuits.
Portable GPS Receivers
Maintains stable 2.9V supply for GPS modules, improving acquisition sensitivity and position accuracy.
- Q: What is the output voltage of the LP2981AIM5-2.9?
- A: The output voltage is fixed at 2.9V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.37V at a 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 95 µA.
- Q: What is the PSRR performance?
- A: The PSRR is 63dB at 1kHz, providing good ripple rejection.
LP2981AIM5-2.9.pdf
- Q: What is the output voltage of the LP2981AIM5-2.9?
- A: The output voltage is fixed at 2.9V.
- Q: What is the maximum output current?
- A: It can deliver up to 100mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; consult the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.37V at a 100mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 95 µA.
- Q: What is the PSRR performance?
- A: The PSRR is 63dB at 1kHz, providing good ripple rejection.
