National Semiconductor LP38511TJ-1.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.48 | $3.48 |
| 15+ | $0.80 | $12.00 |
| 25+ | $0.78 | $19.50 |
| 50+ | $0.74 | $37.00 |
| 100+ | $0.65 | $65.00 |
| N+ | $0.13 | 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) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.26V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 3.5 µA |
| Current - Supply (Max) | 13 mA |
| PSRR | 73dB ~ 70dB (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-263-5 Thin |
| Supplier Device Package | TO-263-5 Thin |
| ROHS |  |
The LP38511TJ-1.8/NOPB is a fixed 1.8V low dropout linear regulator capable of delivering 800mA. Its standout feature is an ultra-low 3.5 µA quiescent current, making it ideal for battery-operated devices. With a dropout voltage of just 0.26V at full load, it maximizes efficiency in low-headroom designs. The regulator offers excellent ripple rejection of 73dB at 120Hz, ensuring clean power for sensitive electronics. Housed in a TO-263-5 Thin package, it balances thermal performance with a compact footprint.
- Extended Battery Life: 3.5 µA quiescent current minimizes standby drain, ideal for always-on applications.
- High Efficiency in Low-Headroom Designs: 0.26V dropout at 800mA allows operation from nearly depleted batteries.
- Clean Output Power: 73dB PSRR at 120Hz effectively filters mains-frequency ripple.
- Robust Thermal Package: TO-263-5 Thin dissipates heat efficiently for reliable 800mA operation.
Battery-Powered IoT Sensors
The ultra-low 3.5 µA quiescent current significantly extends battery life in always-on IoT sensor nodes, where standby power dominates.
FPGA Core Supply
With 800mA output and 1.8V fixed voltage, it can power low-voltage FPGA cores, providing stable regulation with 73dB PSRR at 120Hz to reject supply noise.
Portable Medical Devices
Low dropout of 0.26V allows operation from a single Li-ion cell down to 2.06V, maximizing usable battery capacity in compact medical monitors.
Noise-Sensitive Audio Circuits
The 70dB PSRR at 1kHz helps filter high-frequency switching noise from upstream DC-DC converters, preserving audio signal integrity.
Automotive Telematics Units
The TO-263-5 Thin package offers good thermal dissipation for under-hood environments, while the low quiescent current supports always-on car security modules.
Industrial Sensor Transmitters
Stable 1.8V rail for precision analog front-ends, with dropout margin ensuring regulation even during battery discharge in remote loop-powered transmitters.
- Q: What is the output voltage of the LP38511TJ-1.8/NOPB?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; refer to the datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.26V at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 3.5 µA, ideal for battery-powered applications.
- Q: What package is available?
- A: It comes in a TO-263-5 Thin package.
LP38511TJ-1.8/NOPB.pdf
- Q: What is the output voltage of the LP38511TJ-1.8/NOPB?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 800mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified in the provided data; refer to the datasheet for absolute maximum ratings.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.26V at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is very low at 3.5 µA, ideal for battery-powered applications.
- Q: What package is available?
- A: It comes in a TO-263-5 Thin package.
