Texas Instruments LP38843SX-1.2
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $12.84 | $12.84 |
| 15+ | $2.95 | $44.25 |
| 25+ | $2.89 | $72.25 |
| 50+ | $2.73 | $136.50 |
| 100+ | $2.41 | $241.00 |
| N+ | $0.48 | 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) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.5V @ 3A |
| Current - Output | 3A |
| Current - Quiescent (Iq) | 30 µA |
| Current - Supply (Max) | 40 mA |
| PSRR | 80dB ~ 65dB (120Hz ~ 1kHz) |
| 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 LP38843SX-1.2 from Texas Instruments is a 3A low dropout linear regulator with a fixed 1.2V output. It features an exceptionally low quiescent current of 30 µA, making it ideal for battery-powered and energy-efficient applications. The dropout voltage is only 0.5V at full load, allowing operation from low input rails. With PSRR of 80dB at 120Hz, it delivers clean power for noise-sensitive digital circuits. The DDPAK/TO-263-5 package ensures excellent thermal performance for high-current applications.
- Ultra-Low Quiescent Current: 30 µA extends battery life in portable and standby applications.
- High Output Current: 3A capability supports demanding processor and FPGA cores.
- Superior Noise Rejection: 80dB PSRR at 120Hz ensures clean power for sensitive electronics.
- Low Dropout: 0.5V at 3A maximizes efficiency and headroom.
Low-Power Battery-Powered Devices
The ultra-low 30 µA quiescent current makes the LP38843SX-1.2 ideal for battery-operated IoT sensors and portable medical devices, extending battery life while providing a stable 1.2V core supply.
FPGA and CPLD Core Power
Modern FPGAs often require 1.2V cores at up to 3A. This regulator delivers the required current with low dropout, ensuring reliable operation even as the battery or input rail sags.
High-Performance Computing
In servers and workstations, the LP38843SX-1.2 provides clean 1.2V power to memory controllers and high-speed logic, with 80dB PSRR at 120Hz to reject switching noise.
Automotive Electronics
With its robust TO-263 package and 3A capability, this regulator suits automotive infotainment and ADAS processors requiring a dedicated 1.2V rail.
Industrial Sensors
The low quiescent current and high accuracy make it suitable for industrial sensor interfaces and data converters that need a stable 1.2V reference.
Networking and Communications
For 1.2V SerDes and PHY supplies in switches and routers, the LP38843SX-1.2 offers low noise and high current in a thermally efficient package.
- Q: What is the output voltage of the LP38843SX-1.2?
- A: The fixed output voltage is 1.2V.
- 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 full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.5V at a 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 30 µA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-5 package.
LP38843SX-1.2.pdf
- Q: What is the output voltage of the LP38843SX-1.2?
- A: The fixed output voltage is 1.2V.
- 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 full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.5V at a 3A load.
- Q: What is the quiescent current?
- A: The quiescent current is extremely low at 30 µA.
- Q: What package is available?
- A: It comes in a DDPAK/TO-263-5 package.
