TL4581DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High precision, low dropout voltage, adjustable output, thermal shutdown protection
• Package: SOIC-8
• Essence: TL4581DG4 is a voltage regulator IC designed to provide stable and regulated output voltage for various electronic devices.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Output Current: Up to 1.5A
• Dropout Voltage: 0.5V typical at 1A load
• Line Regulation: ±0.02% typical
• Load Regulation: ±0.1% typical
• Quiescent Current: 50µA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TL4581DG4 IC has the following pin configuration:

1. GND: Ground pin
2. VOUT: Output voltage pin
3. ADJ: Adjustable pin for setting the output voltage
4. VIN: Input voltage pin
5. NC: No connection
6. NC: No connection
7. NC: No connection
8. NC: No connection

Functional Features

• High precision voltage regulation
• Low dropout voltage for efficient power conversion
• Adjustable output voltage through the ADJ pin
• Thermal shutdown protection to prevent overheating

Advantages and Disadvantages

Advantages

• Provides stable and regulated output voltage
• Wide input voltage range allows for versatile applications
• Low quiescent current for energy efficiency
• Compact SOIC-8 package for space-constrained designs

Disadvantages

• Limited output current compared to higher power regulators
• Requires external components for proper operation

Working Principles

The TL4581DG4 operates as a linear voltage regulator. It takes an input voltage from the VIN pin and regulates it to a stable output voltage set by the ADJ pin. The internal circuitry ensures that the output voltage remains constant even with varying input voltages and load conditions. The IC also includes thermal shutdown protection, which activates when the temperature exceeds a certain threshold, preventing damage due to overheating.

Detailed Application Field Plans

The TL4581DG4 is commonly used in various electronic devices where a stable and regulated voltage supply is required. Some of its typical applications include:

1. Battery-powered devices: Provides regulated voltage for portable electronics such as smartphones, tablets, and portable audio players.
2. Automotive electronics: Used in automotive systems like infotainment systems, lighting controls, and engine management units.
3. Industrial equipment: Provides voltage regulation for control systems, sensors, and motor drives.
4. Power supplies: Used in low-power DC-DC converters and linear power supplies.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar specifications and pin configuration.
2. LT1084: High-current adjustable voltage regulator suitable for demanding applications.
3. LM1117: Low dropout voltage regulator available in various fixed output voltage options.

These alternative models offer similar functionality and can be considered as substitutes for the TL4581DG4 depending on specific requirements.

In conclusion, the TL4581DG4 is a versatile voltage regulator IC that provides stable and regulated output voltage for a wide range of electronic devices. Its high precision, low dropout voltage, and adjustable output make it suitable for various applications. However, it has limitations in terms of output current and requires external components for operation. Engineers can consider alternative models depending on their specific needs.