TL431CPWR

Product Overview

Category: Integrated Circuit
Use: Voltage Reference
Characteristics: Adjustable Precision Shunt Regulator
Package: SOT-23-3
Essence: Programmable Precision Reference
Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

The TL431CPWR is an integrated circuit voltage reference that provides a highly accurate and adjustable output voltage. It operates as a precision shunt regulator with a typical output voltage of 2.5V. The device is designed to be used in a wide range of applications where a stable voltage reference is required.

Key specifications of the TL431CPWR include:

Output Voltage Range: 2.5V to 36V
Reference Voltage Tolerance: ±1%
Sink Current Capability: 1mA to 100mA
Temperature Range: -40°C to +85°C
Low Dynamic Output Impedance: 0.22Ω

Pin Configuration

The TL431CPWR is housed in a SOT-23-3 package, which has three pins. The pin configuration is as follows:

Anode (A): Connected to the positive supply voltage.
Cathode (K): Connected to the load or ground.
Reference (R): Provides the adjustable output voltage.

Functional Features

The TL431CPWR offers several functional features that make it suitable for various applications:

Adjustable Output Voltage: The reference pin allows the user to set the desired output voltage within the specified range.
High Accuracy: The device provides a precise output voltage with a tolerance of ±1%.
Low Dynamic Output Impedance: This ensures stability and reduces the effect of load variations on the output voltage.
Wide Operating Temperature Range: The TL431CPWR can operate in a temperature range of -40°C to +85°C, making it suitable for harsh environments.
Sink Current Capability: The device can sink current from 1mA to 100mA, allowing it to handle a wide range of loads.

Advantages and Disadvantages

Advantages of the TL431CPWR include:

Adjustable output voltage allows flexibility in various applications.
High accuracy ensures precise voltage regulation.
Low dynamic output impedance provides stability.
Wide operating temperature range enables usage in extreme conditions.

Disadvantages of the TL431CPWR include:

Limited sink current capability compared to some other voltage regulators.
Requires an external resistor network for precise voltage adjustment.

Working Principles

The TL431CPWR operates based on the principle of a precision shunt regulator. It compares the reference voltage at the reference pin with an internal voltage divider network. By adjusting the resistance connected to the reference pin, the output voltage can be set within the specified range. The TL431CPWR sinks current from the load or ground, maintaining a stable output voltage.

Application Field Plans

The TL431CPWR finds applications in various fields, including:

Power Supply Regulation: It can be used as a voltage reference in power supply circuits to maintain a stable output voltage.
Battery Charging: The TL431CPWR can be employed in battery charging circuits to regulate the charging voltage accurately.
Audio Amplifiers: It can be utilized in audio amplifier circuits to provide a stable bias voltage for improved performance.
Industrial Control Systems: The TL431CPWR is suitable for use in industrial control systems that require precise voltage references.

Alternative Models

In addition to the TL431CPWR, there are several alternative models available in the market that offer similar functionality. Some popular alternatives include:

LM4040: Precision Shunt Voltage Reference
REF3030: Adjustable Precision Voltage Reference
LT1009: Precision Reference with Low Temperature Drift

These alternative models can be considered based on specific requirements and design constraints.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431CPWR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431CPWR:

Q: What is TL431CPWR? A: TL431CPWR is a three-terminal adjustable precision shunt regulator commonly used in technical solutions.
Q: What is the purpose of TL431CPWR? A: TL431CPWR is used to provide a stable voltage reference or regulate voltage levels in various electronic circuits.
Q: What is the operating voltage range of TL431CPWR? A: TL431CPWR operates within a voltage range of 2.5V to 36V.
Q: How does TL431CPWR work as a voltage reference? A: TL431CPWR compares the reference voltage at its reference pin with an external voltage, adjusting its output to maintain a constant voltage.
Q: Can TL431CPWR be used as a current regulator? A: Yes, TL431CPWR can be used as a current regulator by connecting it in series with a resistor and controlling the current flow.
Q: What is the typical accuracy of TL431CPWR? A: The typical accuracy of TL431CPWR is around ±1%.
Q: How can TL431CPWR be used for overvoltage protection? A: TL431CPWR can be configured as a comparator to monitor the voltage level and trigger a protective action when it exceeds a set threshold.
Q: Can TL431CPWR be used in switching power supplies? A: Yes, TL431CPWR is commonly used in switching power supplies to regulate the output voltage and improve stability.
Q: What are the key features of TL431CPWR? A: Some key features of TL431CPWR include low dynamic output impedance, wide operating temperature range, and low quiescent current.
Q: Are there any application notes or reference designs available for TL431CPWR? A: Yes, the manufacturer of TL431CPWR provides application notes and reference designs that can help in understanding its various applications and usage scenarios.

Please note that these answers are general and may vary depending on specific circuit requirements and design considerations.