Texas Instruments LP3966ES-1.8

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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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

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.
Base Product Number : LP3966ES-1.8
1.8V 3A DDPAK/TO-263-5 Fixed Output LDO Linear Regulator Texas Instruments
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.