L78S09CV-DG

Product Overview

Category: Voltage Regulator
Use: Provides a stable output voltage of +9V
Characteristics: High efficiency, low dropout voltage, thermal shutdown protection
Package: TO-220
Essence: Linear voltage regulator
Packaging/Quantity: Available in reels of 2,500 units

Specifications

Input Voltage: Up to 35V
Output Voltage: +9V
Output Current: Up to 2A
Dropout Voltage: 2V (typical)
Quiescent Current: 5mA (typical)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L78S09CV-DG voltage regulator has three pins:

Input (VIN): Connects to the input voltage source.
Ground (GND): Connected to the ground reference.
Output (VOUT): Provides the regulated output voltage of +9V.

Functional Features

High Efficiency: The L78S09CV-DG offers high efficiency, minimizing power dissipation and maximizing battery life.
Low Dropout Voltage: With a typical dropout voltage of 2V, this regulator can operate with a small input-output voltage differential.
Thermal Shutdown Protection: The device includes built-in thermal shutdown protection, preventing damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Provides a stable output voltage for various applications. - High efficiency reduces power consumption. - Thermal shutdown protection ensures device safety.

Disadvantages: - Requires an input voltage within the specified range. - May generate heat under high load conditions.

Working Principles

The L78S09CV-DG is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable +9V output.

Detailed Application Field Plans

The L78S09CV-DG is commonly used in various electronic devices, including: - Power supplies for audio amplifiers - Battery chargers - Industrial control systems - Automotive applications

Detailed and Complete Alternative Models

LM7809: Similar voltage regulator with a different package (TO-220)
MC7809: Another alternative with similar specifications and pin configuration
UA7809: Voltage regulator from another manufacturer, compatible with L78S09CV-DG

These alternative models can be used as substitutes for the L78S09CV-DG, depending on availability and specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L78S09CV-DG v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L78S09CV-DG in technical solutions:

Q: What is L78S09CV-DG? A: L78S09CV-DG is a voltage regulator IC that provides a fixed output voltage of +9V.
Q: What is the input voltage range for L78S09CV-DG? A: The input voltage range for L78S09CV-DG is typically between 11V and 35V.
Q: What is the maximum output current of L78S09CV-DG? A: The maximum output current of L78S09CV-DG is 2A.
Q: Can L78S09CV-DG handle both AC and DC input voltages? A: Yes, L78S09CV-DG can handle both AC and DC input voltages.
Q: Is L78S09CV-DG suitable for automotive applications? A: Yes, L78S09CV-DG is suitable for automotive applications as it has a wide input voltage range and can handle automotive electrical systems.
Q: Does L78S09CV-DG require any external components for operation? A: Yes, L78S09CV-DG requires input and output capacitors for stability and filtering.
Q: Can L78S09CV-DG be used in battery-powered applications? A: Yes, L78S09CV-DG can be used in battery-powered applications as long as the input voltage is within its specified range.
Q: What is the thermal resistance of L78S09CV-DG? A: The thermal resistance of L78S09CV-DG is typically around 50°C/W.
Q: Can L78S09CV-DG handle short-circuit conditions? A: Yes, L78S09CV-DG has built-in protection features to handle short-circuit conditions.
Q: Is L78S09CV-DG available in different package options? A: Yes, L78S09CV-DG is available in various package options such as TO-220, TO-220FP, and DPAK.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications of L78S09CV-DG.