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The LM2940 is a positive voltage regulator that features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V.
The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3V).
LM2940 Pinout
LM2940 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | OUTPUT |
| 2 | GND |
| 3 | INPUT |
LM2940 Key Features
- Dropout voltage typically 0.5V IO = 1A
- Output current in excess of 1A
- Output voltage trimmed before assembly
- Reverse battery protection
- Internal short circuit current limit
- Mirror image insertion protection
Application
- Vehicular Applications
You can download this datasheet for LM2940 12V Low Dropout Regulator – Datasheet from the link given below:
