National Semiconductor LP3871EMP-2.5/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.52 | $5.52 |
| 15+ | $1.27 | $19.05 |
| 25+ | $1.24 | $31.00 |
| 50+ | $1.17 | $58.50 |
| 100+ | $1.04 | $104.00 |
| N+ | $0.21 | 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) | 7V |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.35V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 5 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 73dB ~ 57dB (120Hz) |
| 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 | TO-261-5, TO-261AB |
| Supplier Device Package | SOT-223 |
| ROHS |  |
The LP3871EMP-2.5/NOPB is a fixed 2.5V LDO regulator offering 800mA output current. With a dropout voltage of just 0.35V at full load, it is ideal for 3.3V to 2.5V conversion. The 5mA quiescent current and 73dB PSRR ensure clean, efficient power for mixed-signal and memory applications. Its SOT-223 package is suitable for compact industrial designs.
- Fixed 2.5V Output: No external resistors needed, reducing BOM count.
- Low Dropout: 0.35V at 800mA supports tight voltage margins.
- High Ripple Rejection: 73dB PSRR at 120Hz for clean analog supplies.
- Low Quiescent Current: 5mA helps extend battery life.
2.5V I/O and Memory Power
DDR memory and FPGA I/O banks often use 2.5V. This regulator provides a stable 800mA supply with low dropout.
Analog-to-Digital Converter Reference
Clean 2.5V with high PSRR improves ADC accuracy by reducing supply-induced noise.
Battery-Powered Handheld Instruments
Low quiescent current extends battery life in portable multimeters and field sensors.
Post-Regulation for 3.3V to 2.5V Conversion
With 0.35V dropout, it efficiently steps down from a 3.3V rail with only 0.45V headroom required.
Automotive Sensor Modules
Stable 2.5V output for pressure and temperature sensors in engine control units.
- Q: What is the output voltage?
- A: The fixed output is 2.5V.
- Q: What is the maximum current?
- A: It can deliver 800mA.
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 800mA.
- Q: What is the quiescent current?
- A: Quiescent current is 5 mA.
- Q: What package is used?
- A: SOT-223 package.
- Q: What is the PSRR?
- A: PSRR is 73dB to 57dB at 120Hz.
LP3871EMP-2.5/NOPB.pdf
- Q: What is the output voltage?
- A: The fixed output is 2.5V.
- Q: What is the maximum current?
- A: It can deliver 800mA.
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 800mA.
- Q: What is the quiescent current?
- A: Quiescent current is 5 mA.
- Q: What package is used?
- A: SOT-223 package.
- Q: What is the PSRR?
- A: PSRR is 73dB to 57dB at 120Hz.
