National Semiconductor LP3966ES-3.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $13.84 | $13.84 |
| 15+ | $3.18 | $47.70 |
| 25+ | $3.11 | $77.75 |
| 50+ | $2.94 | $147.00 |
| 100+ | $2.60 | $260.00 |
| N+ | $0.52 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 3.3V |
| 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 | TO-263 (DDPAK-5) |
| ROHS |  |
The LP3966ES-3.3/NOPB from National Semiconductor is a robust low dropout linear regulator providing a fixed 3.3V output at up to 3A. With a dropout voltage of 1.2V at full load, it efficiently regulates from higher input rails. The TO-263 (DDPAK-5) package ensures excellent thermal performance for demanding applications. This regulator is ideal for high-current digital systems requiring a stable and reliable power supply.
- High Current Capacity: 3A output supports power-hungry digital loads and multiple peripherals.
- Low Dropout: 1.2V at 3A allows operation with moderate input-to-output headroom, reducing power loss.
- Thermally Efficient Package: TO-263 (DDPAK-5) dissipates heat effectively for reliable operation.
- Fixed 3.3V Output: Simplifies design by eliminating external resistor dividers.
- Proven Reliability: National Semiconductor design ensures stable performance across temperature ranges.
High-Current 3.3V Rail Generation
This regulator provides a stable 3.3V rail at up to 3A, making it suitable for powering digital logic, microcontrollers, and peripheral ICs in industrial and consumer systems.
Post-Regulation for Switching Converters
Use after a buck converter to reduce output ripple and provide a clean, low-noise 3.3V supply for mixed-signal circuits that require both high current and low noise.
Server and Networking Equipment
In networking hardware, the 3A capability supports multiple interface ICs and processors, while the TO-263 package allows efficient heat dissipation in continuous operation.
Test and Measurement Instruments
Precision instruments require stable reference voltages. This LDO delivers consistent 3.3V with low dropout, ensuring accuracy in measurement circuits.
Automotive Body Electronics
With robust current handling and a thermally efficient package, this regulator is well-suited for automotive body control modules and infotainment systems.
Industrial Control Systems
PLC and motor control systems benefit from the high current capability and reliable performance of this LDO for powering control logic and communication interfaces.
- Q: What is the output voltage?
- A: The output voltage is fixed at 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 3A.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; only the output voltage of 3.3V is given.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.2V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What package is available?
- A: The device comes in a TO-263 (DDPAK-5) package.
LP3966ES-3.3/NOPB.pdf
- Q: What is the output voltage?
- A: The output voltage is fixed at 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 3A.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; only the output voltage of 3.3V is given.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.2V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What package is available?
- A: The device comes in a TO-263 (DDPAK-5) package.
