L4995RJ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, low power dissipation
• Package: TO-220
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 1000 units per reel

Specifications

• Input Voltage Range: 4.4V to 60V
• Output Voltage Range: 1.25V to 55V
• Output Current: Up to 1.5A
• Quiescent Current: 2.5mA
• Switching Frequency: 200kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4995RJ IC has the following pin configuration:

1. GND (Ground)
2. FB (Feedback)
3. COMP (Compensation)
4. VCC (Supply Voltage)
5. EN (Enable)
6. SS/TR (Soft Start/Tracking)
7. OUT (Output)
8. IN (Input)

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency and low power dissipation ensure energy savings.
• Built-in protection features such as thermal shutdown and overcurrent protection.
• Soft start and tracking functionality for smooth startup and transient response.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables usage in various power supply designs.
• High efficiency results in reduced power consumption.
• Integrated protection features enhance system reliability.
• Soft start and tracking improve stability during startup and load changes.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Higher cost compared to some alternative models.
• Requires external components for certain functionalities.

Working Principles

The L4995RJ is a voltage regulator IC that regulates the output voltage based on the feedback received from the FB pin. It operates by comparing the output voltage with a reference voltage and adjusting the duty cycle of an internal PWM controller to maintain a stable output. The integrated control circuitry ensures efficient power conversion while providing protection against faults.

Detailed Application Field Plans

The L4995RJ is commonly used in various applications, including:

1. Power supplies for industrial equipment
2. Automotive electronics
3. Telecommunications systems
4. Consumer electronics
5. LED lighting systems

Detailed and Complete Alternative Models

• LM2576-ADJ: Adjustable Voltage Regulator, TO-220 package
• LT1084CP-12: 12V Fixed Voltage Regulator, TO-220 package
• TPS5430DDAR: Synchronous Buck Converter, SOIC-8 package
• MC34063AP1: Step-Up/Step-Down Voltage Regulator, DIP-8 package

These alternative models offer similar functionalities and can be considered as substitutes for the L4995RJ in different applications.

In conclusion, the L4995RJ is a versatile voltage regulator IC suitable for a wide range of applications. Its high efficiency, built-in protection features, and adjustable output voltage make it a reliable choice for power management needs. However, its limited output current and higher cost compared to some alternatives should be taken into consideration when selecting the appropriate solution.