National Semiconductor LP3873ES-2.5
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $17.24 | $17.24 |
| 15+ | $3.97 | $59.55 |
| 25+ | $3.88 | $97.00 |
| 50+ | $3.66 | $183.00 |
| 100+ | $3.23 | $323.00 |
| N+ | $0.65 | 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) | 1.2V @ 3A |
| Current - Output | 3A |
| Current - Quiescent (Iq) | 9 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-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | DDPAK/TO-263-5 |
| ROHS |  |
The National Semiconductor LP3873ES-2.5 is a robust 3A low dropout linear regulator with a fixed 2.5V output. Packaged in DDPAK/TO-263-5, it offers a low dropout voltage of 1.2V at full load and a quiescent current of 9 mA. Its high PSRR of 73dB at 120Hz makes it an excellent choice for noise-sensitive applications.
- High Output Current: 3A capability supports power-hungry digital loads like FPGAs and processors.
- Low Dropout: 1.2V dropout at 3A minimizes power loss and allows operation from lower input rails.
- Superior Noise Rejection: 73dB PSRR at 120Hz ensures clean output for analog and RF circuits.
- Thermally Efficient Package: DDPAK/TO-263-5 package dissipates heat effectively for reliable high-current operation.
FPGA and CPLD Core Power
The 2.5V output at 3A is perfect for powering the core voltage of modern FPGAs and CPLDs, which require tight voltage regulation and high current capability.
DDR Memory Termination
In computing systems, the LP3873ES-2.5 can supply the VTT rail for DDR2/DDR3 memory, providing the necessary 2.5V with low noise and high current.
Networking Switches and Routers
For high-speed networking equipment, this regulator provides a stable 2.5V supply for SerDes transceivers and PHY chips, ensuring signal integrity.
Medical Monitoring Devices
Portable and stationary medical equipment benefit from the low quiescent current and high PSRR, ensuring reliable operation of sensitive measurement circuits.
Audio/Video Processing
The 2.5V rail can power video codecs and audio DSPs, where the 73dB PSRR at 120Hz helps eliminate hum and noise from the power supply.
Server Motherboards
As a secondary regulator, it provides clean 2.5V power for clock generators and I/O controllers, improving overall system stability.
- Q: What is the output voltage of the LP3873ES-2.5?
- A: The fixed output voltage is 2.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 3A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1.2V at a 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-5 package.
LP3873ES-2.5.pdf
- Q: What is the output voltage of the LP3873ES-2.5?
- A: The fixed output voltage is 2.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 3A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1.2V at a 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-5 package.
