Texas Instruments LM2940T-8.0/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.68 | $1.68 |
| 15+ | $1.63 | $24.45 |
| 25+ | $1.59 | $39.75 |
| 50+ | $1.50 | $75.00 |
| 100+ | $1.33 | $133.00 |
| N+ | $0.27 | 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) | 8V |
| 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 | Through Hole |
| Package / Case | TO-220-3 |
| Supplier Device Package | TO-220-3 |
| ROHS |  |
The LM2940T-8.0/NOPB is a fixed 8V low dropout regulator in a TO-220-3 package, capable of delivering 1A. Its low dropout voltage of 1V at full load allows operation from 9V or 12V inputs. With 66dB PSRR at 120Hz, it provides clean power for analog and digital circuits. The robust TO-220 package ensures efficient heat dissipation in continuous operation.
- Fixed 8V Output: Simplifies design for 8V systems.
- 1A Output: Supports a variety of loads.
- Low Dropout (1V): Efficient operation from 9V rails.
- High PSRR (66dB): Excellent ripple rejection for sensitive circuits.
- Thermal Protection: Prevents overheating in demanding environments.
8V Logic Supplies
Some legacy logic families require 8V; this regulator provides a stable rail from 12V or 9V sources.
Fan Controllers
In server and industrial fans, 8V is used for speed control circuits; this LDO ensures clean power with 66dB PSRR.
Battery Chargers
For charging 6V lead-acid batteries, an 8V regulated supply is needed; this regulator can provide the necessary current.
Instrumentation Amplifiers
Precision analog circuits often use 8V rails; the high PSRR minimizes noise from power lines.
Relay Drivers
8V relays are common in automotive; this regulator drives them reliably from a 12V battery.
LCD Bias Supplies
Some LCD panels require 8V bias; this LDO provides a stable voltage for display drivers.
- Q: What is the output voltage?
- A: Fixed 8V output.
- Q: What is the maximum current?
- A: 1A continuous output current.
- Q: What is the input voltage range?
- A: Minimum 9V (8V + 1V dropout), maximum 26V.
- Q: What is the dropout voltage?
- A: Typically 1V at 1A load.
- Q: What is the quiescent current?
- A: Typically 10mA.
- Q: What package is this?
- A: TO-220-3 through-hole package.
LM2940T-8.0/NOPB.pdf
- Q: What is the output voltage?
- A: Fixed 8V output.
- Q: What is the maximum current?
- A: 1A continuous output current.
- Q: What is the input voltage range?
- A: Minimum 9V (8V + 1V dropout), maximum 26V.
- Q: What is the dropout voltage?
- A: Typically 1V at 1A load.
- Q: What is the quiescent current?
- A: Typically 10mA.
- Q: What package is this?
- A: TO-220-3 through-hole package.
