Texas Instruments LP5951MFX-1.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.71 | $0.71 |
| 15+ | $0.69 | $10.35 |
| 25+ | $0.68 | $17.00 |
| 50+ | $0.64 | $32.00 |
| 100+ | $0.56 | $56.00 |
| N+ | $0.11 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Marketplace | Cut Tape (CT) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.3V |
| 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 |
| ROHS |
The Texas Instruments LP5951MFX-1.3/NOPB is a low-dropout linear regulator delivering a fixed 1.3V output with up to 150mA of current. Its low 55µA quiescent current and 0.35V dropout voltage make it highly efficient for battery-powered applications. The SOT-23-5 package offers a compact footprint, while PSRR of 60dB at 100Hz ensures clean power for sensitive analog and RF circuits.
- Extended Battery Life: Ultra-low 55µA quiescent current minimizes standby power draw in portable devices.
- Clean Output: 60dB PSRR at 100Hz filters supply noise, ideal for audio and RF applications.
- Compact Design: SOT-23-5 package saves board space for space-constrained designs.
- Low Dropout: 0.35V dropout at 150mA allows operation from nearly depleted batteries.
Battery-Powered IoT Sensors
The LP5951's low 55µA quiescent current and 1.3V output are ideal for always-on sensor nodes, extending battery life in wireless environmental monitoring.
Portable Audio Codec Power
With 60dB PSRR at 100Hz, this LDO provides clean, ripple-free 1.3V supply for audio codecs in portable media players, minimizing audible noise.
FPGA Core Voltage
For low-power FPGAs requiring a stable 1.3V core, the LP5951 delivers up to 150mA with tight regulation, ensuring reliable logic operation.
Wearable Health Monitors
The small SOT-23-5 package and low dropout of 0.35V make it suitable for compact wearable devices powered by single-cell Li-ion batteries.
RF Transceiver Supply
Its PSRR performance (60dB at 100Hz) helps maintain signal integrity in RF transceivers by suppressing power supply noise.
Industrial Reference Bias
Provides a stable 1.3V bias rail for precision analog circuits in industrial control systems, where voltage accuracy is critical.
- Q: What is the output voltage of the LP5951MFX-1.3/NOPB?
- A: The fixed output voltage is 1.3V.
- 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 range is from 1.5V to 5.5V (based on 1.3V output plus dropout).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.35V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 55µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
- Q: What is the output voltage of the LP5951MFX-1.3/NOPB?
- A: The fixed output voltage is 1.3V.
- 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 range is from 1.5V to 5.5V (based on 1.3V output plus dropout).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.35V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 55µA.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.

LP5951MFX-1.3/NOPB.pdf