Texas Instruments LP3855ET-1.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $6.69 | $6.69 |
| 15+ | $1.54 | $23.10 |
| 25+ | $1.50 | $37.50 |
| 50+ | $1.42 | $71.00 |
| 100+ | $1.25 | $125.00 |
| N+ | $0.25 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Marketplace | Tube |
| 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) | 0.38V @ 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 | Through Hole |
| Package / Case | TO-220-5 Formed Leads |
| Supplier Device Package | TO-220-5 |
The LP3855ET-1.8 from Texas Instruments is a high-current fixed 1.8V low dropout linear regulator capable of delivering 1.5A. It features a low dropout voltage of 0.38V and PSRR up to 73dB at 120Hz. The TO-220-5 package ensures excellent thermal performance for demanding applications.
- High Output Current: 1.5A capacity supports power-hungry FPGAs, DSPs, and ASICs.
- Ultra-Low Dropout: 0.38V at 1.5A minimizes power dissipation and allows operation from lower input voltages.
- Excellent PSRR: Up to 73dB at 120Hz provides clean power for noise-sensitive digital circuits.
- Thermal Efficiency: TO-220-5 package with exposed tab dissipates heat effectively for reliable high-current operation.
FPGA Core Power
With 1.5A output and 1.8V rail, this LDO is perfect for powering FPGA core logic, providing low dropout (0.38V) to maintain regulation from a 2.5V supply.
DSP and Microprocessor Supplies
High-current digital processors require stable 1.8V rails; the LP3855ET-1.8 delivers with excellent PSRR (73dB at 120Hz) to filter switching noise.
Networking Equipment
For routers and switches, this regulator powers high-speed ASICs, ensuring clean 1.8V for I/O and core logic in dense PCB layouts.
Graphics Cards
In GPUs, the 1.5A capacity supports auxiliary 1.8V rails for memory and logic, with the TO-220-5 package providing excellent thermal management.
Industrial Motor Controllers
For motor control DSPs, the LP3855ET-1.8 provides a robust 1.8V supply, with 57dB PSRR at 120Hz to reject PWM noise from motor drivers.
Telecom Baseband Processors
In base stations, this LDO powers baseband processors requiring high current at low voltage, ensuring reliable operation in high-temperature environments.
- Q: What is the output voltage?
- A: The LP3855ET-1.8 provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of 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.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.38V at 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR performance?
- A: PSRR ranges from 73dB to 57dB at 120Hz, depending on conditions.
LP3855ET-1.8/NOPB.pdf
- Q: What is the output voltage?
- A: The LP3855ET-1.8 provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of 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.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.38V at 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR performance?
- A: PSRR ranges from 73dB to 57dB at 120Hz, depending on conditions.
