National Semiconductor LP3999ITLX-1.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.76 | $1.76 |
| 15+ | $0.40 | $6.00 |
| 25+ | $0.40 | $10.00 |
| 50+ | $0.37 | $18.50 |
| 100+ | $0.33 | $33.00 |
| N+ | $0.07 | Price Inquiry |
Request Quote / Inquiry
| 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) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.1V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 150 µA |
| Current - Supply (Max) | 200 µA |
| PSRR | 60dB (1kHz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 5-WFBGA, DSBGA |
| Supplier Device Package | 5-DSBGA (1.5x1.2) |
| ROHS |
The National Semiconductor LP3999ITLX-1.8 is a fixed 1.8V low dropout linear regulator capable of delivering 150mA of output current. It features an ultra-low dropout voltage of 0.1V at full load, making it highly efficient for battery-powered applications. With a low quiescent current of 150 µA and excellent PSRR, it ensures clean and stable power for sensitive electronics. The device is housed in a compact 5-DSBGA package.
- Ultra-Low Dropout: The 0.1V dropout at 150mA enables efficient operation with minimal headroom.
- Excellent Noise Rejection: 60dB PSRR at 1kHz provides a clean output for noise-sensitive circuits.
- Low Quiescent Current: The 150 µA quiescent current extends battery life in portable devices.
- Ultra-Small Package: The 5-DSBGA (1.5x1.2) package is ideal for miniaturized designs.
Low-Power Microcontrollers
The LP3999ITLX-1.8 is perfect for powering 1.8V microcontrollers in energy-efficient embedded systems, offering a stable supply with ultra-low dropout.
Memory and Logic ICs
For DDR memory and low-voltage logic ICs requiring 1.8V, this LDO provides a clean and accurate power rail, ensuring reliable data integrity.
Portable Medical Devices
Its low quiescent current and high PSRR make it suitable for battery-powered medical devices like glucose monitors and hearing aids, where noise and power are critical.
IoT Edge Nodes
The compact package and low power consumption make it ideal for IoT edge nodes that need a regulated 1.8V supply for sensors and wireless transceivers.
Audio Codec Power
With 60dB PSRR at 1kHz, this regulator ensures a noise-free 1.8V supply for audio codecs, improving audio quality in portable devices.
- Q: What is the output voltage of the LP3999ITLX-1.8?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: The maximum output current is 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 very low at 0.1V at a 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What package is available?
- A: It comes in a 5-DSBGA (1.5x1.2) package.
- Q: What is the output voltage of the LP3999ITLX-1.8?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: The maximum output current is 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 very low at 0.1V at a 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What package is available?
- A: It comes in a 5-DSBGA (1.5x1.2) package.

LP3999ITLX-1.8/NOPB.pdf