LM2940 voltage regulator[video+FAQ]: Datasheet, circuit and Equivalent
This article provides you with a basic overview of the LM2940, including its pin descriptions, functions, specifications, alternative products, etc. to help you
LM2940 Pinout and Configurations
| Name | NDE | KTT | DCY | NGN | I/O | Description |
| IN | 1 | 1 | 1 | 3 | I | Unregulated input voltage |
| GND | 2 | 2 | 2 | 2 | – | Ground |
| OUT | 3 | 3 | 3 | 5,6 | 0 | Regulated output voltage. |
| GND | 4 | 4 | 4 | 7 | – | Ground |
| N/C | – | – | – | 1,4,8 | – | No connection |
LM2940: Features
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Dropout Voltage 0.385 V (Typ) at IO = 1A
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Output Current in Excess of 1A
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Output Voltage Trimmed Before Assembly
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Reverse-Battery Protection
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Internal Short-Circuit Current Limit
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Mirror-Image Insertion Protection
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Available in
– Commercial Temperature (0°C to 125°C)
– Extended Temperature (–40°C to 125°C)
LM2940:Applications
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Post Regulator for Switching Supplies
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Logic Power Supplies
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Industrial Instrumentation
LM2940 Equivalent
The equivalent for LM2940 is LM7805.
LM2940 Typical Application
LM2940 Block Diagram
LM2940 Package
LM2940 Manufacturer
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