Texas Instruments LP3966ES-1.8
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $18.00 | $18.00 |
| 15+ | $4.14 | $62.10 |
| 25+ | $4.05 | $101.25 |
| 50+ | $3.83 | $191.50 |
| 100+ | $3.38 | $338.00 |
| N+ | $0.68 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.2V @ 3A |
| Current - Output | 3A |
| Current - Quiescent (Iq) | 9 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | - |
| 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 LP3966ES-1.8 is a robust 3A low dropout linear regulator from Texas Instruments, designed to deliver a precise 1.8V output. Its low dropout voltage of 1.2V at full load ensures efficient operation even with tight input-to-output margins. Housed in a thermally efficient DDPAK/TO-263-5 package, this regulator is engineered for high-current applications requiring clean and stable power.
- High Current Capacity: Delivers up to 3A, suitable for powering demanding digital cores and processors.
- Low Dropout Voltage: The 1.2V dropout at 3A maximizes efficiency and allows operation from lower input rails.
- Stable Fixed Output: Provides a precise 1.8V output, eliminating the need for external resistor dividers and reducing component count.
- Thermally Efficient Package: The DDPAK/TO-263-5 package ensures excellent heat dissipation for reliable operation in high-power environments.
High-Current Digital Core Supplies
With a 3A output capability and a fixed 1.8V output, the LP3966ES-1.8 is ideal for powering the core voltage of FPGAs, DSPs, and ASICs that require stable, low-voltage rails.
Post-Regulation for Switching Converters
The low dropout of 1.2V at full load allows this LDO to efficiently clean up the output of a switching regulator, reducing ripple and providing a clean supply for sensitive analog circuits.
Server and Telecom Motherboards
In systems with 3.3V or 5V rails, this regulator can step down to 1.8V for logic and I/O interfaces, providing a robust and reliable power solution for high-reliability applications.
Industrial Control Systems
The DDPAK/TO-263-5 package offers excellent thermal performance, making it suitable for industrial controllers that demand consistent operation under varying loads and temperatures.
Networking Equipment
For routers and switches that need a dedicated 1.8V rail for high-speed transceivers, the LP3966ES-1.8 ensures minimal voltage deviation during data bursts.
- Q: What is the output voltage of the LP3966ES-1.8?
- A: The fixed output voltage is 1.8V.
- 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 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.
- Q: What is the output voltage of the LP3966ES-1.8?
- A: The fixed output voltage is 1.8V.
- 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 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.

LP3966ES-1.8.pdf