Overview
The L4940D2T12-TR is a three-terminal positive voltage regulator from STMicroelectronics, part of the L4940 series. This device is available in the D2PAK package and is designed to provide a fixed output voltage of 12V. It is particularly suitable for battery-powered equipment due to its very low input/output voltage drop, which helps in reducing consumption and prolonging battery life. The L4940 series is versatile and useful in a wide range of industrial and consumer applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Part Number | L4940D2T12-TR | - |
| Marketing Status | Active | - |
| Package | D2PAK | - |
| Grade | Industrial | - |
| RoHS Compliance Grade | Ecopack2 | - |
| Output Voltage (nom) | 12 | V |
| Output Tolerance (typ) | 2 | % |
| Output Current (nom) | 1.5 | A |
| Operating Temperature (°C) | -40 to 125 | °C |
| Dropout Voltage (typ at 1 A) | 450 mV | mV |
Key Features
- Precise 12V output voltage
- Low dropout voltage (450 mV typical at 1 A)
- Very low quiescent current
- Thermal shutdown
- Short-circuit protection
- Reverse polarity protection
- Internal current limiting and anti-saturation circuit
- Safe area protection
Applications
The L4940D2T12-TR is suitable for a wide range of industrial and consumer applications, particularly in battery-powered equipment. Its low dropout voltage and low quiescent current make it ideal for applications where power efficiency and battery life are critical. Common applications include:
- Battery-powered devices
- Industrial control systems
- Consumer electronics
Q & A
- What is the output voltage of the L4940D2T12-TR?
The output voltage of the L4940D2T12-TR is 12V.
- What is the typical dropout voltage at 1 A for the L4940D2T12-TR?
The typical dropout voltage at 1 A is 450 mV.
- What type of package does the L4940D2T12-TR come in?
The L4940D2T12-TR comes in a D2PAK package.
- What are the operating temperature ranges for the L4940D2T12-TR?
The operating temperature range is from -40°C to 125°C.
- Does the L4940D2T12-TR have thermal shutdown protection?
Yes, the L4940D2T12-TR has thermal shutdown protection.
- What is the maximum output current of the L4940D2T12-TR?
The maximum output current is 1.5 A.
- Is the L4940D2T12-TR RoHS compliant?
Yes, the L4940D2T12-TR is RoHS compliant with an Ecopack2 grade.
- What kind of protection does the L4940D2T12-TR have against short circuits?
The L4940D2T12-TR has short-circuit protection.
- Does the L4940D2T12-TR have reverse polarity protection?
Yes, the L4940D2T12-TR has reverse polarity protection.
- What is the typical output tolerance of the L4940D2T12-TR?
The typical output tolerance is 2%.
