National Semiconductor LM2940SX-10-NS
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.92 | $5.92 |
| 15+ | $1.36 | $20.40 |
| 25+ | $1.33 | $33.25 |
| 50+ | $1.26 | $63.00 |
| 100+ | $1.11 | $111.00 |
| N+ | $0.22 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| 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 | DDPAK/TO-263-3 |
The LM2940SX-10-NS from National Semiconductor is a fixed 10V low dropout linear regulator capable of delivering 1A of output current. With a dropout voltage of 1V at full load, it is ideal for applications where the input supply is only slightly above the output. The device features a quiescent current of 10 mA and a PSRR of 63dB at 120Hz, ensuring clean and stable output. Packaged in DDPAK/TO-263-3, it is designed for surface-mount assembly and robust thermal performance.
- High Current Capacity: 1A output supports demanding loads such as motors and RF amplifiers.
- Low Dropout: 1V dropout enables operation from 11V input, reducing power dissipation.
- Superior Ripple Rejection: 63dB PSRR at 120Hz filters mains noise for sensitive analog circuits.
- Surface-Mount Package: DDPAK/TO-263-3 allows compact PCB design and efficient heat sinking.
Automotive Power Systems
Regulates 12V battery input to a stable 10V for sensors and actuators, with 1A capacity and 63dB PSRR to suppress alternator noise.
Industrial Control Units
Provides a clean 10V rail for PLCs and motor controllers, handling 1A with low dropout for reliable operation during voltage sags.
Telecom Base Stations
Powers RF amplifiers and mixers requiring a low-noise 10V supply, leveraging 63dB PSRR at 120Hz to minimize interference.
Medical Devices
Delivers stable 10V for patient monitoring equipment, with 1A drive capability and robust thermal performance in TO-263 package.
Audio Equipment
Supplies a quiet 10V rail for preamplifiers and DACs, using high PSRR to reject hum from the mains supply.
Battery Chargers
Regulates charging circuits for 10V battery packs, providing 1A current with low dropout for efficient charging.
- Q: What is the output voltage?
- A: The LM2940SX-10-NS provides a fixed 10V output.
- Q: What is the maximum output current?
- A: It can supply up to 1A of load current.
- Q: What is the input voltage range?
- A: The input voltage is 10V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 1V at 1A load.
- Q: What is the quiescent current?
- A: Quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in DDPAK/TO-263-3 package.
LM2940SX-10-NS.pdf
- Q: What is the output voltage?
- A: The LM2940SX-10-NS provides a fixed 10V output.
- Q: What is the maximum output current?
- A: It can supply up to 1A of load current.
- Q: What is the input voltage range?
- A: The input voltage is 10V (typical).
- Q: What is the dropout voltage?
- A: Dropout is 1V at 1A load.
- Q: What is the quiescent current?
- A: Quiescent current is 10 mA.
- Q: What package is available?
- A: It comes in DDPAK/TO-263-3 package.
