Texas Instruments LP3873ESX-3.3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $17.24 | $17.24 |
| 15+ | $4.30 | $64.50 |
| 25+ | $4.20 | $105.00 |
| 50+ | $3.97 | $198.50 |
| 100+ | $3.50 | $350.00 |
| N+ | $0.70 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Obsolete |
| 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 | 73dB ~ 57dB (120Hz) |
| 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 Texas Instruments LP3873ESX-3.3 is a high-performance 3A low dropout linear regulator offering a fixed 3.3V output. Housed in a DDPAK/TO-263-5 package, it features a low 1.2V dropout voltage at full load and a quiescent current of 9 mA. With excellent PSRR of 73dB at 120Hz, it ensures clean power delivery for noise-sensitive applications.
- High Current Capacity: Delivers up to 3A, suitable for powering demanding digital cores and multiple loads.
- Low Dropout Voltage: 1.2V dropout at 3A enables efficient operation with lower input voltages, reducing power dissipation.
- Excellent Ripple Rejection: 73dB PSRR at 120Hz effectively filters AC ripple, ensuring stable output for sensitive analog circuits.
- Robust Package: DDPAK/TO-263-5 package provides excellent thermal performance for high-power applications.
High-Current Digital Core Supplies
With a 3A output capability and a fixed 3.3V rail, the LP3873ESX-3.3 is ideal for powering the core voltage of FPGAs, DSPs, and ASICs in networking and telecommunications equipment.
Post-Regulation for Switching Converters
The low 1.2V dropout at 3A allows efficient post-regulation of a 5V or 3.5V switch-mode supply, providing a clean, low-noise 3.3V output for sensitive analog and mixed-signal circuits.
Industrial Control Systems
Its robust DDPAK/TO-263-5 package and high current handling make it suitable for industrial actuators, PLCs, and motor control boards requiring a stable 3.3V logic supply.
Automotive Infotainment
The device can power audio codecs, microcontrollers, and display drivers in automotive head units, benefiting from the 73dB PSRR at 120Hz to reject alternator ripple.
Base Station Power Distribution
In wireless infrastructure, the LP3873ESX-3.3 provides a clean 3.3V rail for RF transceivers and baseband processors, ensuring consistent performance under varying load conditions.
Test and Measurement Equipment
Precision instruments require stable reference voltages. This LDO delivers 3A with low noise and high PSRR, making it suitable for powering ADC/DAC reference circuits.
- Q: What is the output voltage of the LP3873ESX-3.3?
- A: The fixed output voltage is 3.3V.
- 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 typically 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.
LP3873ESX-3.3.pdf
- Q: What is the output voltage of the LP3873ESX-3.3?
- A: The fixed output voltage is 3.3V.
- 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 typically 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.
