National Semiconductor LP3985IBPX-2.5
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.48 | $1.48 |
| 15+ | $0.34 | $5.10 |
| 25+ | $0.33 | $8.25 |
| 50+ | $0.31 | $15.50 |
| 100+ | $0.28 | $28.00 |
| N+ | $0.06 | 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) | 6V |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.1V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 150 µA |
| Current - Supply (Max) | 200 µA |
| PSRR | 50dB ~ 40dB (1kHz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
The LP3985IBPX-2.5 from National Semiconductor is a fixed 2.5V low dropout linear regulator capable of delivering 150mA. It features a very low dropout voltage of 0.1V at full load and a PSRR of 50dB at 1kHz, making it suitable for battery-powered and noise-sensitive applications. The compact SOT-23-5 package is ideal for portable electronics.
- Very Low Dropout: 0.1V @ 150mA extends battery life in portable devices.
- Good Noise Rejection: 50dB PSRR at 1kHz ensures stable operation for analog circuits.
- Compact SOT-23-5 Package: Saves space on PCBs for miniaturized designs.
- Stable 2.5V Output: Provides a precise voltage rail for low-voltage digital and analog ICs.
Battery-Powered Portable Devices
The low dropout of 0.1V @ 150mA allows efficient operation from a 2.7V Li-ion battery down to 2.6V, maximizing usable battery capacity.
Noise-Sensitive Analog Circuits
With 50dB PSRR at 1kHz, it provides a clean 2.5V rail for op-amps and precision references in instrumentation.
Digital Core Power Supply
Ideal for powering low-voltage digital cores in MCUs and DSPs, ensuring stable operation at 2.5V.
Wireless Headsets
The SOT-23-5 package and 150mA output are well-suited for Bluetooth audio modules, providing a stable supply for the codec and RF section.
Portable GPS Receivers
Provides a low-noise 2.5V supply for the GPS RF front-end, improving signal acquisition and accuracy.
- Q: What is the output voltage of the LP3985IBPX-2.5?
- A: It provides a fixed 2.5V output.
- Q: What is the maximum output current?
- A: The LP3985 can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The nominal input voltage is 2.5V; refer to the datasheet for the full range.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low at 0.1V @ 150mA.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What is the PSRR performance?
- A: It offers 50dB PSRR at 1kHz, reducing to 40dB at 10kHz.
LP3985IBPX-2.5.pdf
- Q: What is the output voltage of the LP3985IBPX-2.5?
- A: It provides a fixed 2.5V output.
- Q: What is the maximum output current?
- A: The LP3985 can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The nominal input voltage is 2.5V; refer to the datasheet for the full range.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low at 0.1V @ 150mA.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What is the PSRR performance?
- A: It offers 50dB PSRR at 1kHz, reducing to 40dB at 10kHz.
