TL2842BD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High-performance, adjustable output voltage, low dropout voltage, current limiting, thermal shutdown protection
• Package: SOIC-8 (Small Outline Integrated Circuit), surface mount package
• Essence: TL2842BD is a voltage regulator IC that provides stable and regulated output voltage for various electronic devices.
• Packaging/Quantity: Available in reels or tubes, with 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Output Current: Up to 1A
• Dropout Voltage: 0.5V (typical)
• Quiescent Current: 10mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TL2842BD IC has the following pin configuration:

```

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| | --| Vref Vin|-- --| GND Vout|-- --| FB NC |-- |___________| ```

• Vref: Reference voltage pin
• Vin: Input voltage pin
• GND: Ground pin
• Vout: Output voltage pin
• FB: Feedback pin
• NC: No connection pin

Functional Features

• Adjustable Output Voltage: The TL2842BD allows users to adjust the output voltage within a specified range.
• Low Dropout Voltage: The IC maintains a low voltage drop between the input and output, ensuring efficient power conversion.
• Current Limiting: It incorporates current limiting functionality to protect the circuit from excessive current flow.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection to prevent overheating and damage.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility. - Low dropout voltage ensures efficient power conversion. - Current limiting protects the circuit from overcurrent situations. - Thermal shutdown protection prevents overheating.

Disadvantages: - Limited output current capability (up to 1A). - Requires external components for proper operation. - Not suitable for high-power applications.

Working Principles

The TL2842BD is a linear voltage regulator that uses a feedback mechanism to maintain a stable output voltage. It compares the actual output voltage with a reference voltage (Vref) and adjusts the internal circuitry to regulate the output voltage within the desired range. By controlling the pass transistor, it adjusts the voltage drop across it to achieve the desired output voltage.

Detailed Application Field Plans

The TL2842BD can be used in various electronic devices and applications, including but not limited to: - Power supplies - Battery chargers - Audio amplifiers - LED drivers - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to TL2842BD that offer similar functionality are: - LM317: Adjustable voltage regulator with higher output current capability. - LM7805: Fixed 5V voltage regulator. - LT1084: Adjustable voltage regulator with low dropout voltage. - LM1117: Low dropout voltage regulator available in various fixed output voltages.

These alternative models provide options based on specific requirements and constraints of different applications.

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