National Semiconductor LP3855ESX-1.8
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.44 | $8.44 |
| 15+ | $1.94 | $29.10 |
| 25+ | $1.90 | $47.50 |
| 50+ | $1.79 | $89.50 |
| 100+ | $1.58 | $158.00 |
| N+ | $0.32 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| 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) | 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 | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | DDPAK/TO-263-5 |
The LP3855ESX-1.8 is a low-dropout linear regulator from National Semiconductor, providing a fixed 1.8V output with up to 1.5A of current. Its low dropout voltage of 0.38V and high PSRR make it ideal for high-current, noise-sensitive applications. Packaged in DDPAK/TO-263-5, this regulator offers excellent thermal performance and reliability.
- Low Dropout: 0.38V at 1.5A maximizes efficiency.
- High PSRR: 73dB at 120Hz ensures clean output.
- High Current: 1.5A supports demanding loads.
- Robust Package: DDPAK/TO-263-5 for superior heat dissipation.
High-Current Low-Voltage Rails
The LP3855ESX-1.8 delivers 1.5A at 1.8V, ideal for powering modern processors and FPGAs that require high current at low voltages.
Networking Equipment
Its low dropout voltage (0.38V) ensures efficient operation in routers and switches with tight voltage margins.
Graphics Cards
Use this LDO to provide stable 1.8V for GPU core logic, reducing noise and improving performance.
Storage Systems
Power SSDs and HDD controllers with clean 1.8V, ensuring data integrity and reliability.
Telecom Infrastructure
The high PSRR (73dB) makes it suitable for base stations and communication equipment where noise isolation is critical.
Automotive Electronics
With its robust DDPAK/TO-263-5 package, it can handle automotive temperature ranges for infotainment and ADAS.
- Q: What is the output voltage of the LP3855ESX-1.8?
- A: It provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: The maximum output current is 1.5A.
- Q: What is the input voltage range?
- A: The input voltage range is up to 1.8V (typical operation).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 0.38V at 1.5A.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR?
- A: The PSRR ranges from 73dB to 57dB at 120Hz.
LP3855ESX-1.8.pdf
- Q: What is the output voltage of the LP3855ESX-1.8?
- A: It provides a fixed 1.8V output.
- Q: What is the maximum output current?
- A: The maximum output current is 1.5A.
- Q: What is the input voltage range?
- A: The input voltage range is up to 1.8V (typical operation).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 0.38V at 1.5A.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR?
- A: The PSRR ranges from 73dB to 57dB at 120Hz.
