Texas Instruments LM2940CT-5.0/LF01
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 15+ | $1.60 | $24.00 |
| 25+ | $1.57 | $39.25 |
| 50+ | $1.48 | $74.00 |
| 100+ | $1.31 | $131.00 |
| N+ | $0.26 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 15 mA |
| Current - Supply (Max) | 60 mA |
| PSRR | 72dB (120Hz) |
| Control Features | - |
| Protection Features | Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-220-3, Formed Leads |
| Supplier Device Package | TO-220-3, LF01 |
| ROHS |  |
The LM2940CT-5.0/LF01 is a 1A low dropout linear regulator from Texas Instruments, delivering a fixed 5V output. Its 1V dropout and 15mA quiescent current make it efficient for battery and automotive applications. The TO-220 package ensures excellent thermal performance, while 72dB PSRR at 120Hz provides clean power for sensitive electronics.
- High Efficiency in Battery Systems: 1V dropout extends battery life by allowing operation at lower input voltages.
- Excellent Ripple Rejection: 72dB PSRR at 120Hz ensures clean output for audio and precision analog circuits.
- Robust Thermal Management: TO-220 package with metal tab dissipates heat effectively for 1A continuous loads.
- Wide Input Range: Accepts up to 26V, providing flexibility in automotive and industrial designs.
Automotive Power Supplies
The 1A output and 26V input tolerance make it ideal for regulating 12V automotive rails down to 5V for sensors and microcontrollers, withstanding load-dump transients.
Post-Switching Regulator Filtering
With 72dB PSRR at 120Hz, it effectively attenuates ripple from a buck converter, providing clean 5V for analog circuits.
Battery-Powered Equipment
The low dropout of 1V allows operation from a 6V battery down to near depletion, maximizing usable battery life.
Industrial Control Systems
Its TO-220 package with a metal tab allows easy heatsinking for reliable operation in 24V industrial control panels.
5V Logic and Peripheral Supply
Provides stable 5V for logic ICs, relays, and small motors, with thermal shutdown and short-circuit protection.
Audio Preamp Rails
The high PSRR at 120Hz reduces mains hum, making it suitable for powering low-noise audio preamplifiers.
- Q: What is the output voltage of the LM2940CT-5.0/LF01?
- A: The fixed output voltage is 5V.
- 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 1V above the output (dropout) and can go up to 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 15mA.
- Q: What package is available?
- A: It comes in a TO-220-3 package (LF01 lead-free option).
LM2940CT-5.0/LF01.pdf
- Q: What is the output voltage of the LM2940CT-5.0/LF01?
- A: The fixed output voltage is 5V.
- 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 1V above the output (dropout) and can go up to 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 15mA.
- Q: What package is available?
- A: It comes in a TO-220-3 package (LF01 lead-free option).
