Overview
The L7818CV-DG is a linear voltage regulator integrated circuit (IC) manufactured by STMicroelectronics. This device is part of the L78 series and is designed to provide a stable and fixed positive output voltage of 18V. It is capable of delivering up to 1.5A of output current, making it suitable for a variety of applications requiring reliable voltage regulation. The L7818CV-DG is packaged in a TO-220-3 (TO-220AB) package, which is convenient for through-hole mounting and offers good thermal dissipation characteristics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage - Max | 35 | V |
| Output Voltage Fixed | 18 | V |
| Dropout Voltage - Max | 2 | V |
| Output Current - Max | 1.5 | A |
| Tolerance | ±4% | |
| Operating Temp Range | 0°C to 125°C | |
| Regulator Topology | Fixed | |
| Quiescent Current | 8 mA | |
| No. of Outputs | Single | |
| Output Noise | 110 µV | |
| Load Regulation | 0.36 V | |
| Current - Limit | 2.1 A | |
| Line Regulation | 0.36 V | |
| Package Style | TO-220-3 (TO-220AB) | |
| Mounting Method | Through Hole |
Key Features
- Fixed Output Voltage: Provides a stable 18V output voltage.
- High Output Current: Capable of delivering up to 1.5A of output current.
- Low Dropout Voltage: Maximum dropout voltage of 2V.
- Thermal and Current Overload Protection: Built-in protection features to ensure safe operation.
- Wide Operating Temperature Range: Operates from 0°C to 125°C.
- Low Quiescent Current: Quiescent current of 8 mA.
- Good Line and Load Regulation: Line regulation of 0.36 V and load regulation of 0.36 V.
- Compact Packaging: Available in TO-220-3 (TO-220AB) package for easy through-hole mounting.
Applications
- Signal Conditioning: Suitable for applications requiring stable voltage sources for signal conditioning circuits.
- Microcontroller Power Supplies: Ideal for powering microcontrollers and other digital circuits.
- Industrial Control Systems: Used in various industrial control systems where reliable voltage regulation is crucial.
- Consumer Electronics: Found in consumer electronics such as audio equipment, medical devices, and other electronic appliances.
- Automotive Systems: Can be used in automotive systems where a stable voltage supply is necessary.
Q & A
- What is the output voltage of the L7818CV-DG?
The output voltage of the L7818CV-DG is fixed at 18V.
- What is the maximum output current of the L7818CV-DG?
The maximum output current of the L7818CV-DG is 1.5A.
- What is the maximum input voltage for the L7818CV-DG?
The maximum input voltage for the L7818CV-DG is 35V.
- What is the dropout voltage of the L7818CV-DG?
The dropout voltage of the L7818CV-DG is 2V.
- What is the operating temperature range of the L7818CV-DG?
The operating temperature range of the L7818CV-DG is from 0°C to 125°C.
- Does the L7818CV-DG have built-in protection features?
Yes, the L7818CV-DG has built-in current and thermal overload protection features.
- What is the quiescent current of the L7818CV-DG?
The quiescent current of the L7818CV-DG is 8 mA.
- What package type is the L7818CV-DG available in?
The L7818CV-DG is available in a TO-220-3 (TO-220AB) package.
- Is the L7818CV-DG RoHS compliant?
Yes, the L7818CV-DG is RoHS compliant.
- What are some common applications of the L7818CV-DG?
The L7818CV-DG is commonly used in signal conditioning, microcontroller power supplies, industrial control systems, consumer electronics, and automotive systems.
