LD39115J30R

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, 3.0V Output
• Package: TO-220
• Essence: Linear Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage: 3.0V ±2%
• Output Current: Up to 1.5A
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD39115J30R has the following pin configuration:

1. VOUT: Output Voltage
2. GND: Ground
3. VIN: Input Voltage

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• Wide input voltage range allows for versatile applications.
• High output current capability supports various loads.
• Low quiescent current minimizes power consumption.
• Thermal shutdown protection prevents overheating.

Advantages

• Reliable voltage regulation for sensitive electronic components.
• Compact TO-220 package facilitates easy integration into circuit designs.
• Wide operating temperature range enables usage in extreme environments.
• Low dropout voltage reduces power dissipation and extends battery life.

Disadvantages

• Higher cost compared to switching regulators.
• Limited output voltage options (fixed at 3.0V).
• Requires external capacitors for stability.

Working Principles

The LD39115J30R is a linear regulator that maintains a constant output voltage regardless of variations in input voltage or load conditions. It achieves this by using a pass transistor to regulate the voltage drop across it. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain the desired output voltage.

Detailed Application Field Plans

The LD39115J30R is commonly used in various applications, including:

1. Battery-powered devices: Provides stable voltage for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Regulates voltage for infotainment systems, lighting modules, and control units.
3. Industrial equipment: Ensures reliable power supply for sensors, actuators, and control circuits.
4. Communication systems: Stabilizes voltage for RF modules, transceivers, and signal processing units.

Detailed and Complete Alternative Models

• LD39115J33R: 3.3V output voltage variant
• LD39115J25R: 2.5V output voltage variant
• LD39115J50R: 5.0V output voltage variant

These alternative models provide different output voltage options while maintaining similar characteristics and package types.

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