Texas Instruments LM2940SX-12/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.71 | $1.71 |
| 15+ | $1.66 | $24.90 |
| 25+ | $1.62 | $40.50 |
| 50+ | $1.53 | $76.50 |
| 100+ | $1.35 | $135.00 |
| 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) | 12V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 66dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°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 LM2940SX-12/NOPB from Texas Instruments is a fixed 12V LDO regulator capable of delivering 1A. With a dropout voltage of 1V and 66dB PSRR, it is designed for automotive and industrial applications requiring clean, stable power. The TO-263 package ensures excellent heat dissipation.
- High PSRR: 66dB at 120Hz filters ripple from alternators and switching supplies.
- 1A Output: Supports heavy loads like audio amplifiers and industrial controllers.
- Low Dropout: 1V at 1A allows operation from a 13V rail with minimal loss.
- Robust Package: TO-263 (DDPAK) provides superior thermal performance for continuous operation.
Automotive Audio Systems
Provides a stable 12V rail for car radios and amplifiers, with 66dB PSRR at 120Hz to suppress alternator noise.
Industrial Power Supplies
Regulates 12V for PLCs and motor drives, handling up to 1A with robust thermal performance in TO-263 package.
Telecom Base Stations
Powers RF transceivers and control logic, ensuring clean 12V output with low dropout from a 13V bus.
LED Lighting Drivers
Supplies 12V to LED strips and control ICs, maintaining consistent brightness in commercial lighting.
Test and Measurement Equipment
Provides a stable 12V reference for bench instruments, with high PSRR for accurate readings.
Security Systems
Powers CCTV cameras and alarm panels from a 24V supply, converting down to 12V with minimal heat.
- Q: What is the output voltage of the LM2940SX-12/NOPB?
- A: The fixed output voltage is 12V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 13V to 26V.
- Q: What is the dropout voltage?
- A: Dropout voltage is 1V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-3) package.
LM2940SX-12/NOPB.pdf
- Q: What is the output voltage of the LM2940SX-12/NOPB?
- A: The fixed output voltage is 12V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 13V to 26V.
- Q: What is the dropout voltage?
- A: Dropout voltage is 1V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It is available in a TO-263 (DDPAK-3) package.
