Texas Instruments LP3855EMP-ADJ/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.57 | $5.57 |
| 15+ | $5.39 | $80.85 |
| 25+ | $5.27 | $131.75 |
| 50+ | $4.98 | $249.00 |
| 100+ | $4.40 | $440.00 |
| N+ | $0.88 | 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 | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.23V |
| Voltage - Output (Max) | 6.6V |
| Voltage Dropout (Max) | 0.435V @ 1.5A |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 3 mA |
| Current - Supply (Max) | 10 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-261-5, TO-261AB |
| Supplier Device Package | SOT-223-5 |
| ROHS |
The LP3855EMP-ADJ from Texas Instruments is a high-performance adjustable low dropout linear regulator capable of delivering up to 1.5A of output current. It features an ultra-low dropout voltage of just 0.435V at full load, maximizing efficiency. The output is adjustable from 1.23V to 6.6V, offering design flexibility. With excellent PSRR of 73dB to 57dB, it provides clean power for noise-sensitive applications. Housed in a SOT-223-5 package, it is a robust solution for demanding power supply designs.
- High Current Capacity: Delivers up to 1.5A, making it suitable for powering high-performance digital ICs like FPGAs and DSPs.
- Ultra-Low Dropout: The 0.435V dropout at 1.5A reduces power loss and allows operation with minimal input-to-output voltage difference.
- Excellent Noise Rejection: PSRR of 73dB to 57dB ensures a clean output, ideal for audio and precision analog applications.
- Adjustable Output: The 1.23V to 6.6V adjustable range provides flexibility for various voltage requirements.
High-Current FPGA and DSP Core Supplies
The 1.5A output current capability and low dropout voltage make it ideal for powering the core voltage of FPGAs, DSPs, and ASICs that require high current at low voltages.
Post-Regulation for High-Performance Audio
With excellent PSRR (73dB to 57dB), it can be used to power high-performance audio DACs and amplifiers, providing a clean, noise-free supply that enhances audio fidelity.
Networking and Telecom Equipment
Its high current capability and stable output make it suitable for powering line cards, switches, and routers, ensuring reliable operation of communication ICs.
Point-of-Load (POL) Regulation
It can be used as a POL regulator to provide a dedicated, low-noise voltage rail close to the load, minimizing voltage drops and improving transient response.
Battery-Powered High-Drain Devices
For devices like portable power tools or high-performance cameras, this LDO can efficiently regulate battery voltage to power high-current digital circuits.
Industrial Control Systems
The robust SOT-223-5 package and high current capability make it suitable for powering actuators, motor controllers, and industrial sensors that require a stable supply.
- Q: What is the output voltage of the LP3855EMP-ADJ?
- A: It is an adjustable LDO with an output voltage range from 1.23V up to 6.6V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.23V up to 6.6V.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low, typically 0.435V at a 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the package type?
- A: It is available in a SOT-223-5 package.
- Q: What is the output voltage of the LP3855EMP-ADJ?
- A: It is an adjustable LDO with an output voltage range from 1.23V up to 6.6V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.23V up to 6.6V.
- Q: What is the dropout voltage?
- A: The dropout voltage is very low, typically 0.435V at a 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the package type?
- A: It is available in a SOT-223-5 package.

LP3855EMP-ADJ/NOPB.pdf