National Semiconductor LP5951MFX-1.5
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.60 | $0.60 |
| 15+ | $0.14 | $2.10 |
| 25+ | $0.14 | $3.50 |
| 50+ | $0.13 | $6.50 |
| 100+ | $0.11 | $11.00 |
| N+ | $0.02 | 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) | 1.5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.35V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 55 µA |
| Current - Supply (Max) | 70 µA |
| PSRR | 60dB ~ 50dB (100Hz ~ 10kHz) |
| 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 | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
The LP5951MFX-1.5 is a 150mA low dropout linear regulator from National Semiconductor. It provides a fixed 1.5V output with a dropout voltage of just 0.35V at full load. The device consumes only 55 µA of quiescent current, making it efficient for battery-powered applications. With PSRR of 60dB at 100Hz, it ensures stable operation. The SOT-23-5 package is compact and widely used.
- Efficient Power Conversion: Low dropout of 0.35V maximizes efficiency in low-voltage systems.
- Battery-Friendly: 55 µA quiescent current reduces standby power consumption.
- Reliable Performance: 60dB PSRR at 100Hz provides stable output under varying loads.
- Versatile Package: SOT-23-5 is compatible with standard PCB assembly processes.
Low-Voltage Logic Power
Provides stable 1.5V supply for modern low-voltage logic families and microcontrollers.
Battery-Powered Gadgets
Low dropout and 55 µA quiescent current extend runtime in portable consumer devices.
Sensor Signal Conditioning
Clean 1.5V output with 60dB PSRR at 100Hz supports precision analog front-ends.
Embedded Systems
Reliable power for ARM-based embedded controllers in industrial applications.
Portable Test Equipment
Stable output voltage ensures accurate measurements in handheld multimeters.
Communication Interfaces
Powers low-voltage transceivers and interface ICs in networking equipment.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage is 1.5V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 150mA.
- Q: What is the quiescent current?
- A: Quiescent current is 55 µA.
- Q: What package is used?
- A: It is available in SOT-23-5 package.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage is 1.5V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 0.35V at 150mA.
- Q: What is the quiescent current?
- A: Quiescent current is 55 µA.
- Q: What package is used?
- A: It is available in SOT-23-5 package.

LP5951MFX-1.5.pdf