Texas Instruments LM2940CS-5.0/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.21 | $2.21 |
| 15+ | $2.14 | $32.10 |
| 25+ | $2.10 | $52.50 |
| 50+ | $1.98 | $99.00 |
| 100+ | $1.75 | $175.00 |
| N+ | $0.35 | Price Inquiry |
Request Quote / Inquiry
| 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) | 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 LM2940CS-5.0/NOPB is a robust 1A low dropout linear regulator from Texas Instruments, delivering a fixed 5V output. Its low 0.8V dropout voltage and 10 mA quiescent current make it an efficient choice for battery-operated and automotive systems. Housed in a TO-263 (DDPAK-3) package, it offers excellent thermal performance for demanding applications.
- High Current Capacity: Delivers up to 1A, suitable for powering multiple subsystems from a single regulated rail.
- Low Dropout Voltage: The 0.8V dropout at 1A maximizes efficiency and allows operation close to the output voltage.
- Excellent Ripple Rejection: With 64dB PSRR at 120Hz, it effectively filters AC ripple, ensuring clean power for sensitive electronics.
- Robust Protection: Includes internal current limiting and thermal shutdown for reliable operation in harsh environments.
Automotive Power Supplies
The LM2940CS-5.0/NOPB's 1A output and 0.8V dropout make it ideal for powering sensors and microcontrollers in automotive environments, where input voltage can fluctuate significantly.
Industrial Control Systems
With a wide input voltage range and robust 1A current capability, this regulator provides a stable 5V rail for logic circuits, relays, and industrial interface modules.
Battery-Powered Equipment
Its low quiescent current of 10 mA helps extend battery life in portable instruments, while the low dropout ensures full 5V output even as the battery discharges.
Post-Regulation for Switching Supplies
Use the LM2940CS-5.0/NOPB after a DC-DC converter to reduce ripple and noise, providing a clean 5V supply for sensitive analog and RF circuits.
5V Logic and Peripheral Power
This LDO is perfect for powering 5V TTL/CMOS logic, small motors, and LED strips in embedded systems, offering thermal shutdown and current limiting for protection.
Telecom and Networking Equipment
The 64dB PSRR at 120Hz effectively filters line-frequency noise, making it suitable for powering communication modules in base stations and network switches.
- Q: What is the output voltage of the LM2940CS-5.0/NOPB?
- 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 range is from 6V to 26V (not explicitly stated, but typical for this device; verify in datasheet).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.8V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-3) package.
LM2940CS-5.0/NOPB.pdf
- Q: What is the output voltage of the LM2940CS-5.0/NOPB?
- 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 range is from 6V to 26V (not explicitly stated, but typical for this device; verify in datasheet).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.8V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-3) package.
