L4995RK

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: High efficiency, low power consumption
Package: TO-220
Essence: Voltage Regulator
Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

Input Voltage Range: 4.5V to 40V
Output Voltage Range: 1.2V to 37V
Maximum Output Current: 5A
Quiescent Current: 10mA
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4995RK IC has the following pin configuration:

VIN: Input voltage pin
GND: Ground pin
VOUT: Output voltage pin
COMP: Compensation pin for stability control
FB: Feedback pin for voltage regulation
EN: Enable pin for turning the regulator on/off
SS/TR: Soft-start and tracking pin
VREF: Reference voltage pin

Functional Features

Wide input voltage range allows for versatile applications
High efficiency ensures minimal power loss
Low quiescent current reduces standby power consumption
Overcurrent and thermal protection for enhanced safety
Adjustable output voltage for flexibility in different applications

Advantages and Disadvantages

Advantages

High efficiency leads to energy savings
Wide input voltage range enables compatibility with various power sources
Overcurrent and thermal protection enhance reliability and safety
Adjustable output voltage provides versatility in different applications

Disadvantages

Relatively high quiescent current compared to some other voltage regulators
Limited maximum output current of 5A may not be suitable for high-power applications

Working Principles

The L4995RK is a voltage regulator IC that converts an input voltage to a regulated output voltage. It utilizes a feedback mechanism to maintain the desired output voltage by adjusting the duty cycle of an internal PWM (Pulse Width Modulation) controller. This allows for efficient power conversion while providing stable and accurate output voltage.

Detailed Application Field Plans

The L4995RK is commonly used in various applications, including:

Power supplies for consumer electronics
Industrial automation systems
Automotive electronics
LED lighting systems
Battery charging circuits

Detailed and Complete Alternative Models

LM317: Adjustable voltage regulator with similar characteristics
LM7805: Fixed 5V voltage regulator suitable for low-power applications
LT1083: High-current adjustable voltage regulator for demanding applications
LM1117: Low dropout voltage regulator for battery-powered devices

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L4995RK v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L4995RK in technical solutions:

Q: What is L4995RK? A: L4995RK is a high-efficiency step-down switching regulator IC designed for various applications, including power supplies, battery chargers, and LED drivers.
Q: What is the input voltage range of L4995RK? A: The input voltage range of L4995RK is typically between 4.5V and 55V.
Q: What is the output voltage range of L4995RK? A: The output voltage range of L4995RK can be adjusted from 0.8V to 50V.
Q: What is the maximum output current of L4995RK? A: The maximum output current of L4995RK is typically 3A.
Q: Can L4995RK operate in a wide temperature range? A: Yes, L4995RK is designed to operate in a wide temperature range, typically from -40°C to 125°C.
Q: Does L4995RK have built-in protection features? A: Yes, L4995RK includes various protection features such as overvoltage protection, thermal shutdown, and current limiting.
Q: Can L4995RK be used in automotive applications? A: Yes, L4995RK is suitable for automotive applications as it meets the requirements for automotive-grade components.
Q: How does L4995RK achieve high efficiency? A: L4995RK utilizes a synchronous rectification architecture and operates at high switching frequencies to achieve high efficiency.
Q: Is L4995RK easy to use in circuit designs? A: Yes, L4995RK is designed to be easy to use with minimal external components required for operation.
Q: Are there any application notes or reference designs available for L4995RK? A: Yes, the manufacturer provides application notes and reference designs that can help in implementing L4995RK in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.