Texas Instruments LM2940S-10/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.34 | $2.34 |
| 15+ | $2.26 | $33.90 |
| 25+ | $2.21 | $55.25 |
| 50+ | $2.09 | $104.50 |
| 100+ | $1.85 | $185.00 |
| N+ | $0.37 | 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) | 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 ~ 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 LM2940S-10/NOPB is a fixed 10V low-dropout linear regulator from Texas Instruments, delivering up to 1A of output current. Packaged in a TO-263 (DDPAK-3), it features a dropout voltage of just 1V at full load and a quiescent current of 10 mA. With 63dB of PSRR at 120Hz, it provides excellent ripple rejection for automotive, industrial, and audio applications. This regulator is designed for robust performance in harsh environments, offering thermal shutdown and current limiting protection.
- High Ripple Rejection: 63dB PSRR at 120Hz ensures clean output for sensitive analog circuits.
- Low Dropout: 1V dropout at 1A maximizes efficiency in 12V automotive systems.
- Robust Package: TO-263 DDPAK-3 provides excellent thermal dissipation for continuous 1A loads.
- Wide Input Range: Accepts input voltages up to 26V, making it versatile for various supply rails.
- Built-in Protection: Thermal shutdown and current limiting safeguard the regulator and load.
Automotive Power Supply
The LM2940S-10/NOPB provides a regulated 10V rail for automotive sensors and actuators. Its 1V dropout at 1A ensures stable operation during cold-crank conditions when battery voltage dips.
Industrial Control Systems
With 63dB PSRR at 120Hz, this regulator effectively filters line-frequency noise in factory automation equipment, powering PLCs and motor control ICs with clean 10V supply.
Telecom Base Stations
For 48V to 10V conversion in remote radio heads, the LM2940S-10 offers a simple, low-noise solution. The TO-263 package handles the thermal load of continuous 1A operation.
Audio Equipment
The high PSRR and low output noise make it suitable for powering analog audio circuits, preamplifiers, and equalizers in professional mixing consoles.
Test and Measurement Instruments
Benchtop multimeters and oscilloscopes require stable reference voltages. The LM2940S-10 delivers a precise 10V rail for ADC references and analog front-ends.
HVAC Systems
In building automation, this regulator powers 10V control loops for damper actuators and temperature sensors, ensuring reliable operation across wide temperature ranges.
- Q: What is the output voltage of the LM2940S-10/NOPB?
- A: The fixed output voltage is 10V.
- 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 11V to 26V (typical for this family; verify with datasheet).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-3) package.
LM2940S-10/NOPB.pdf
- Q: What is the output voltage of the LM2940S-10/NOPB?
- A: The fixed output voltage is 10V.
- 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 11V to 26V (typical for this family; verify with datasheet).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 1V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 10 mA.
- Q: What package is available?
- A: It comes in a TO-263 (DDPAK-3) package.
