Texas Instruments LM2940IMPX-10/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.68 | $1.68 |
| 15+ | $1.63 | $24.45 |
| 25+ | $1.59 | $39.75 |
| 50+ | $1.50 | $75.00 |
| 100+ | $1.33 | $133.00 |
| N+ | $0.27 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 10V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 63dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-4 |
| ROHS |  |
The LM2940IMPX-10/NOPB is a fixed 10V low dropout linear regulator from Texas Instruments, capable of delivering 1A of output current. Its low dropout voltage of 1V at full load allows efficient regulation even with small input-to-output headroom. The SOT-223-4 package is ideal for space-constrained PCB designs. With built-in thermal and short-circuit protection, this regulator provides reliable power in automotive, industrial, and consumer applications.
- Low Dropout Voltage (1V @ 1A): Maintains regulation with minimal input-output differential, improving efficiency in battery-powered systems.
- High Output Current (1A): Supports a wide range of loads from microcontrollers to small motors.
- Excellent PSRR (63dB @ 120Hz): Effectively rejects mains-frequency ripple, ensuring clean output for analog circuits.
- Thermal and Short-Circuit Protection: Built-in safety features prevent damage under fault conditions.
- Compact SOT-223 Package: Saves board space while providing adequate thermal dissipation for 1A operation.
Automotive Power Supplies
The 10V fixed output and 1A capability make it ideal for powering sensors and small actuators in automotive systems, where the 1V dropout ensures stable operation during cold-crank conditions.
Industrial Control Boards
With 63dB PSRR at 120Hz, this regulator effectively filters rectified AC ripple, providing clean 10V rails for analog signal conditioning circuits in industrial controllers.
Battery-Powered Equipment
The low quiescent current of 10mA extends battery life in portable instruments that require a stable 10V reference for measurement circuits.
Telecom Line Cards
Its ability to handle 1A with thermal shutdown protection makes it suitable for powering line driver ICs in telecom equipment where 10V bias rails are common.
Audio Preamp Stages
The high PSRR at 120Hz reduces hum from rectified mains, making it a good choice for 10V rails in audio preamplifiers and mixers.
Post-Regulation for Switching Supplies
Use it after a DC-DC converter to reduce switching noise and provide a clean 10V output for sensitive mixed-signal loads.
- Q: What is the output voltage of the LM2940IMPX-10/NOPB?
- A: The fixed output voltage is 10V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 10V plus the dropout voltage (1V typical), so minimum 11V; maximum is 26V.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10mA.
- Q: What package is available?
- A: This model comes in a SOT-223-4 surface-mount package.
LM2940IMPX-10/NOPB.pdf
- Q: What is the output voltage of the LM2940IMPX-10/NOPB?
- A: The fixed output voltage is 10V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 10V plus the dropout voltage (1V typical), so minimum 11V; maximum is 26V.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10mA.
- Q: What package is available?
- A: This model comes in a SOT-223-4 surface-mount package.
