LM2940CT-12/NOPB LDO U-reg 12V 1A TO220
Code MLM2940CT12- Manufacturer TEXAS INSTRUMENTS
- Weight 10.00g
E-shop price: 2,70 €
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Description
Technical Description for LM2940CT-12/NOPB LDO Voltage Regulator
Overview
The LM2940CT-12/NOPB is a low dropout (LDO) voltage regulator designed to provide a stable output voltage of 12V at a maximum load current of 1A. This device is particularly useful in applications requiring a regulated voltage supply with minimal voltage drop between the input and output, making it ideal for battery-powered devices and other low-voltage applications.
Key Features
- Output Voltage: 12V
- Output Current: Up to 1A
- Low Dropout Voltage: Typically 0.5V at 1A load
- Thermal Shutdown: Protects the device from overheating
- Short-Circuit Protection: Prevents damage during overload conditions
- Input Voltage Range: 14V to 30V
- TO-220 Package: Provides effective heat dissipation due to its larger footprint
Electrical Characteristics
- Quiescent Current: 10 mA (typical)
- Line Regulation: 0.01%/V (typical)
- Load Regulation: 0.02% (typical)
- Ripple Rejection: 60 dB (typical at 120 Hz)
Applications
- Power supplies for audio amplifiers
- Battery-operated devices
- Telecommunications equipment
- Automotive electronics
- Any application requiring a stable 12V power supply with low dropout voltage
Pin Configuration
The LM2940CT-12/NOPB is housed in a TO-220 package with the following pin configuration: 1. Input (Vin): Connects to the input voltage supply. 2. Ground (GND): Connects to the circuit ground. 3. Output (Vout): Delivers the regulated output voltage.
Thermal Considerations
When operating the LM2940CT-12/NOPB, it is essential to consider thermal management. The TO-220 package allows for efficient heat dissipation, but users should calculate the power dissipation to ensure the junction temperature remains within safe limits. Adequate heatsinking may be required for applications near the maximum load current.
Conclusion
The LM2940CT-12/NOPB LDO voltage regulator is a reliable choice for applications requiring a 12V supply with low dropout characteristics. With built-in protection features and a robust TO-220 package, it is suited for a variety of electronic projects and commercial products.