Texas Instruments LP3966ESX-3.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $12.16 | $12.16 |
| 15+ | $4.71 | $70.65 |
| 25+ | $4.61 | $115.25 |
| 50+ | $4.35 | $217.50 |
| 100+ | $3.84 | $384.00 |
| N+ | $0.77 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| 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 LP3966ESX-3.3 is a 3A low dropout regulator providing a fixed 3.3V output. With a dropout of 1.2V at full load and 9mA quiescent current, it balances performance and efficiency. The TO-263 package offers excellent thermal management, making it suitable for high-current industrial and automotive applications.
- High Current: 3A output powers multiple loads simultaneously.
- Fixed 3.3V: Simplifies design for standard logic rails.
- Low Dropout: 1.2V at 3A allows operation from 5V supplies.
- Thermal Package: TO-263 (DDPAK-5) ensures reliable operation at high current.
Microcontroller Power
Many MCUs operate at 3.3V. The LP3966ESX-3.3 provides 3A, sufficient for MCU plus peripherals, with 1.2V dropout allowing operation from 5V rails.
Sensor Arrays
Industrial sensor networks use 3.3V for logic and signal conditioning. The 3A capacity powers multiple sensors from a single regulator.
Communication Modules
Wi-Fi and cellular modules require 3.3V with high current during transmission. This regulator handles peak loads without voltage sag.
LED Display Drivers
LED matrices often use 3.3V logic. The high current capacity supports multiple driver ICs, while the TO-263 package dissipates heat effectively.
Automotive ECUs
Engine control units use 3.3V for sensors and processors. The robust package and 9mA quiescent current make it suitable for automotive environments.
Test and Measurement
Bench instruments need stable 3.3V rails. The LP3966's low dropout ensures consistent output even with fluctuating input from bench supplies.
- Q: What is the output voltage?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum current?
- A: It can supply up to 3A.
- Q: What is the dropout voltage?
- A: Dropout is 1.2V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What is the PSRR?
- A: PSRR data is not provided in the technical data.
- Q: What package is available?
- A: TO-263 (DDPAK-5) package.
LP3966ESX-3.3/NOPB.pdf
- Q: What is the output voltage?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum current?
- A: It can supply up to 3A.
- Q: What is the dropout voltage?
- A: Dropout is 1.2V at 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is 9 mA.
- Q: What is the PSRR?
- A: PSRR data is not provided in the technical data.
- Q: What package is available?
- A: TO-263 (DDPAK-5) package.
