L4995K

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: High efficiency, low dropout voltage, adjustable output voltage
Package: TO-220, TO-263, D²PAK
Essence: Linear voltage regulator
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

Input Voltage Range: 4.4V to 60V
Output Voltage Range: 1.25V to 55V
Output Current: Up to 2A
Dropout Voltage: 0.45V at 1A
Quiescent Current: 10mA
Line Regulation: 0.02%/V
Load Regulation: 0.04%/A
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4995K IC has the following pin configuration:

GND: Ground connection
Vout: Output voltage
Vin: Input voltage
Adj: Adjustable pin for setting the output voltage
Enable: Enable/disable control pin

Functional Features

High efficiency due to low dropout voltage
Adjustable output voltage through the Adj pin
Overcurrent protection
Thermal shutdown protection
Short-circuit protection
Enable/disable control for power management

Advantages and Disadvantages

Advantages: - Wide input voltage range - Adjustable output voltage - High efficiency - Built-in protection features

Disadvantages: - Limited output current capacity (up to 2A)

Working Principles

The L4995K is a linear voltage regulator that regulates the output voltage based on the difference between the input and desired output voltage. It uses a pass transistor to control the output voltage by adjusting its resistance. The adjustable output voltage is set using an external resistor connected to the Adj pin. The IC also incorporates various protection features to ensure safe operation.

Detailed Application Field Plans

The L4995K is commonly used in various applications, including: - Power supplies for industrial equipment - Automotive electronics - Battery-powered devices - Telecom infrastructure - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the L4995K are: - LM317: Adjustable linear voltage regulator with similar specifications - LT1083: High current linear voltage regulator with adjustable output - LM1117: Low dropout voltage regulator with fixed output voltage options

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L4995K v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L4995K in technical solutions:

Q: What is the L4995K? A: The L4995K is a high-voltage, step-down switching regulator IC designed for use in various technical solutions.
Q: What is the input voltage range of the L4995K? A: The L4995K can handle an input voltage range from 8V to 55V.
Q: What is the output voltage range of the L4995K? A: The L4995K can provide an adjustable output voltage range from 1.235V to 50V.
Q: What is the maximum output current of the L4995K? A: The L4995K can deliver a maximum output current of up to 3A.
Q: Is the L4995K suitable for battery-powered applications? A: Yes, the L4995K is suitable for battery-powered applications as it has low quiescent current and supports pulse skipping mode for improved efficiency.
Q: Does the L4995K have built-in protection features? A: Yes, the L4995K includes built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
Q: Can the L4995K be used in automotive applications? A: Yes, the L4995K is suitable for automotive applications as it meets the requirements for automotive-grade components.
Q: What type of package does the L4995K come in? A: The L4995K is available in a PowerSO-10 package, which provides good thermal performance.
Q: Can the L4995K be used in both step-down and step-up applications? A: No, the L4995K is specifically designed for step-down (buck) applications.
Q: Are there any evaluation boards or reference designs available for the L4995K? A: Yes, STMicroelectronics provides evaluation boards and reference designs to help users get started with the L4995K in their applications.

Please note that these answers are general and may vary depending on specific application requirements.