National Semiconductor LP3985IM5X-2.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.76 | $0.76 |
| 15+ | $0.17 | $2.55 |
| 25+ | $0.17 | $4.25 |
| 50+ | $0.16 | $8.00 |
| 100+ | $0.14 | $14.00 |
| N+ | $0.03 | 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) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.1V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 150 µA |
| Current - Supply (Max) | 250 µA |
| PSRR | 50dB ~ 40dB (1kHz ~ 10kHz) |
| 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 LP3985IM5X-2.8/NOPB is a precision 2.8V low dropout linear regulator from National Semiconductor, delivering up to 150mA of output current. Housed in a compact SOT-23-5 package, it features a low dropout voltage of just 0.1V at full load and a quiescent current of 150µA, making it well-suited for battery-operated and power-sensitive applications. Its PSRR of 50dB at 1kHz ensures clean, stable output for analog and RF circuits.
- Extended Battery Life: Low 150µA quiescent current minimizes standby power draw in portable devices.
- High Efficiency at Low Dropout: 0.1V dropout at 150mA allows operation close to the output voltage, reducing power dissipation.
- Clean Output for Sensitive Circuits: 50dB PSRR at 1kHz filters input noise, protecting precision analog and RF loads.
- Compact Footprint: SOT-23-5 package saves board space for space-constrained designs.
Portable Battery-Powered Devices
The low 150µA quiescent current and 0.1V dropout at 150mA make it ideal for extending battery life in wearables, hearing aids, and remote sensors where every microamp matters.
Precision Analog Reference Supplies
With PSRR of 50dB at 1kHz, this LDO provides a clean, stable 2.8V rail for precision op-amps, ADCs, and DACs, minimizing noise coupling from the input supply.
RF and Wireless Modules
The 40dB PSRR at 10kHz helps filter high-frequency noise, ensuring stable operation of Bluetooth, Zigbee, and sub-GHz transceivers that require a quiet 2.8V supply.
Camera Sensor Power
Many CMOS image sensors require a clean 2.8V analog supply. The LP3985's low dropout and good ripple rejection ensure consistent imaging performance.
Microcontroller I/O and Logic Rails
For 2.8V logic or I/O domains, this regulator offers a compact SOT-23-5 solution with sufficient 150mA current for MCU peripherals and level shifters.
Audio Codec Supplies
The low noise characteristics help maintain audio signal integrity in portable media players and smart speakers, powering codec analog sections.
- Q: What is the output voltage of the LP3985IM5X-2.8/NOPB?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.1V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
LP3985IM5X-2.8/NOPB.pdf
- Q: What is the output voltage of the LP3985IM5X-2.8/NOPB?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.1V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
