Texas Instruments LM2940S-10
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.83 | $2.83 |
| 15+ | $2.74 | $41.10 |
| 25+ | $2.68 | $67.00 |
| 50+ | $2.53 | $126.50 |
| 100+ | $2.24 | $224.00 |
| N+ | $0.45 | 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 is a fixed 10V low dropout linear regulator capable of delivering 1A of output current. With a typical dropout voltage of 1V at full load, it efficiently regulates from inputs as low as 11V. The device features a low quiescent current of 10 mA and a PSRR of 63dB at 120Hz, ensuring clean and stable output. Packaged in TO-263 (DDPAK-3), it offers excellent thermal performance for high-current applications.
- High Output Current: 1A capability supports demanding loads and multiple components.
- Low Dropout Voltage: 1V typical at 1A reduces power loss and heat generation.
- Good Ripple Rejection: 63dB at 120Hz filters AC noise for sensitive circuits.
- Low Quiescent Current: 10 mA typical minimizes standby power consumption.
Automotive Lighting Systems
Regulate 12V battery power to a stable 10V for LED headlamps and interior lighting. The 1A output drives multiple LEDs, while 63dB PSRR at 120Hz filters alternator noise.
Industrial Actuator Control
Provide a regulated 10V supply for pneumatic and hydraulic actuators. The 1A current capability ensures reliable operation under varying loads.
Audio Equipment
Power preamplifier stages requiring a 10V rail. The low dropout and high PSRR maintain audio quality even with noisy input supplies.
Battery Backup Systems
Use with a 12V lead-acid battery to maintain a constant 10V output. The low quiescent current extends backup runtime.
Test and Measurement
Generate a precise 10V reference for calibration instruments. The 1A output can drive multiple test circuits simultaneously.
Communication Devices
Supply 10V for RF power amplifiers. The high PSRR reduces interference from switching regulators, improving signal clarity.
- Q: What is the output voltage of the LM2940S-10?
- A: The LM2940S-10 provides a fixed output voltage of 10V.
- 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 10V plus the dropout voltage (1V typical at 1A), so a minimum of approximately 11V is required.
- 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 is available in the TO-263 (DDPAK-3) surface-mount package.
LM2940S-10.pdf
- Q: What is the output voltage of the LM2940S-10?
- A: The LM2940S-10 provides a fixed output voltage of 10V.
- 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 10V plus the dropout voltage (1V typical at 1A), so a minimum of approximately 11V is required.
- 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 is available in the TO-263 (DDPAK-3) surface-mount package.
