LD39300PT18-R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High-performance, low dropout voltage regulator
• Package: TO-220 package
• Essence: Regulates input voltage to a stable output voltage
• Packaging/Quantity: Available in reels of 1000 units

Specifications

• Input Voltage Range: 2.5V - 16V
• Output Voltage Range: 1.2V - 15V
• Output Current: Up to 3A
• Dropout Voltage: 0.4V at 3A
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD39300PT18-R has the following pin configuration:

1. VIN - Input voltage pin
2. GND - Ground pin
3. VOUT - Output voltage pin

Functional Features

• High accuracy and stability in regulating output voltage
• Low dropout voltage ensures efficient power conversion
• Built-in thermal shutdown protection
• Overcurrent and short-circuit protection
• Fast transient response for sudden load changes

Advantages and Disadvantages

Advantages

• Wide input voltage range allows flexibility in various applications
• High output current capability supports power-hungry devices
• Excellent line and load regulation for precise voltage control
• Robust protection features ensure device and circuit safety
• Fast transient response enables quick adaptation to load variations

Disadvantages

• Relatively higher dropout voltage compared to some competing models
• Limited output voltage range may not suit all application requirements

Working Principles

The LD39300PT18-R is a voltage regulator that maintains a stable output voltage regardless of fluctuations in the input voltage. It utilizes a feedback mechanism to continuously adjust its internal circuitry, compensating for changes in load and line conditions. By comparing the output voltage with a reference voltage, it regulates the flow of current to maintain the desired output voltage level.

Detailed Application Field Plans

The LD39300PT18-R finds applications in various fields, including:

1. Automotive Electronics: Power supply for infotainment systems, lighting modules, and engine control units.
2. Industrial Automation: Voltage regulation for motor drives, PLCs, and control systems.
3. Telecommunications: Power management in base stations, routers, and network equipment.
4. Consumer Electronics: Regulating voltage for audio/video devices, gaming consoles, and portable gadgets.

Detailed and Complete Alternative Models

1. LM1117-ADJ: Adjustable voltage regulator with similar specifications and package.
2. LT1763-5: Low dropout voltage regulator with fixed 5V output.
3. TPS7A4700: High-performance voltage regulator with adjustable output voltage range.

These alternative models offer comparable features and can be considered as substitutes for the LD39300PT18-R in specific applications.

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