Texas Instruments LM2940CSX-9.0/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 15+ | $1.87 | $28.05 |
| 25+ | $1.83 | $45.75 |
| 50+ | $1.73 | $86.50 |
| 100+ | $1.52 | $152.00 |
| N+ | $0.30 | 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) | 9V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.8V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 64dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-4, D2PAK (3 Leads + Tab), TO-263AA |
| Supplier Device Package | TO-263 (DDPAK-3) |
| ROHS |  |
The LM2940CSX-9.0/NOPB from National Semiconductor is a high-current low-dropout regulator providing a fixed 9.0V output with up to 1A current. Its low 0.8V dropout and 10mA quiescent current make it efficient for battery-powered applications. With 64dB PSRR at 120Hz, it effectively filters power supply noise. The TO-263 package ensures excellent thermal performance for demanding applications.
- High Output Current: 1A capability supports power-hungry loads.
- Low Dropout: 0.8V dropout maximizes efficiency with 12V batteries.
- Excellent Noise Rejection: 64dB PSRR at 120Hz eliminates mains hum.
- Robust Package: TO-263 package handles high power dissipation.
Automotive Audio Systems
With 1A output and 64dB PSRR at 120Hz, the LM2940CSX-9.0/NOPB is ideal for powering car audio amplifiers and head units, reducing alternator noise.
Industrial Power Supplies
Provides a stable 9V rail for industrial sensors, actuators, and control systems, ensuring reliable operation in noisy environments.
Battery-Powered Equipment
Low dropout of 0.8V allows efficient operation from 12V batteries, making it suitable for portable instruments and backup systems.
Telecom Infrastructure
Can be used to power line drivers and communication modules that require a clean 9V supply.
HVAC Control Systems
Ideal for powering microcontrollers and display drivers in thermostats and building automation systems.
- Q: What is the output voltage?
- A: The LM2940CSX-9.0/NOPB provides a fixed 9.0V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1A.
- Q: What is the input voltage range?
- A: The input voltage range is from 9.0V to 26V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.8V at 1A.
- Q: What is the quiescent current?
- A: The quiescent current is 10mA.
- Q: What is the PSRR?
- A: The PSRR is 64dB at 120Hz.
LM2940CSX-9.0/NOPB.pdf
- Q: What is the output voltage?
- A: The LM2940CSX-9.0/NOPB provides a fixed 9.0V output.
- Q: What is the maximum output current?
- A: It can deliver up to 1A.
- Q: What is the input voltage range?
- A: The input voltage range is from 9.0V to 26V (absolute maximum).
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.8V at 1A.
- Q: What is the quiescent current?
- A: The quiescent current is 10mA.
- Q: What is the PSRR?
- A: The PSRR is 64dB at 120Hz.
