TL431CDBVR

Product Overview

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

Specifications

Reference Voltage Range: 2.495V to 36V
Output Current: 1mA to 100mA
Operating Temperature Range: -40°C to +85°C
Line Regulation: 0.2% typical
Load Regulation: 0.4% typical
Temperature Stability: 50ppm/°C typical
Reference Input Current: 80µA typical
Reference Output Impedance: 0.25Ω typical

Pin Configuration

The TL431CDBVR is a three-terminal device with the following pin configuration:

Anode (A): Connected to the reference voltage input.
Cathode (K): Connected to the ground or negative supply.
Reference (R): Provides the regulated output voltage.

Functional Features

Adjustable output voltage: The TL431CDBVR allows precise adjustment of the output voltage within the specified range.
High precision: It provides a highly accurate reference voltage with low temperature drift and good line/load regulation.
Low output impedance: The device has a low output impedance, ensuring stability and minimizing voltage fluctuations.
Short-circuit protection: The TL431CDBVR includes built-in short-circuit protection to prevent damage in case of a fault condition.

Advantages and Disadvantages

Advantages

Wide operating voltage range
High accuracy and stability
Low output impedance
Cost-effective solution for voltage reference applications

Disadvantages

Limited output current capability
Requires an external resistor divider network for precise voltage adjustment

Working Principles

The TL431CDBVR is a programmable precision shunt regulator. It operates by comparing the reference voltage at the Reference pin with an internal voltage divider network. By adjusting the voltage at the Anode pin, the output voltage at the Reference pin can be precisely set. The device maintains a constant voltage between the Cathode and Reference pins, providing a stable output voltage.

Detailed Application Field Plans

The TL431CDBVR finds applications in various fields, including:

Voltage references in power supplies and battery chargers.
Precision voltage regulation in instrumentation and measurement equipment.
Error amplifiers in feedback control circuits.
Voltage monitoring and protection circuits in automotive electronics.
Adjustable voltage regulators in audio amplifiers and consumer electronics.

Detailed and Complete Alternative Models

Some alternative models to TL431CDBVR include:

LM4040: Precision Micropower Shunt Voltage Reference
LT1009: Precision Reference
MAX6126: Ultra-High-Precision Voltage Reference
REF102: Precision Voltage Reference
ADR4550: Precision Micropower Voltage Reference

These alternative models offer similar functionality and can be used as substitutes based on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TL431CDBVR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TL431CDBVR:

Q: What is TL431CDBVR? A: TL431CDBVR is a three-terminal adjustable precision shunt regulator commonly used in technical solutions.
Q: What is the purpose of TL431CDBVR? A: TL431CDBVR is used to provide a stable voltage reference or regulate voltage levels in various electronic circuits.
Q: What is the operating voltage range of TL431CDBVR? A: The operating voltage range of TL431CDBVR is typically between 2.5V and 36V.
Q: How does TL431CDBVR work? A: TL431CDBVR compares the reference voltage with an external voltage divider network and adjusts its output to maintain a constant voltage.
Q: Can TL431CDBVR be used as a current regulator? A: Yes, TL431CDBVR can be used as a current regulator by connecting it in series with a resistor and adjusting the reference voltage accordingly.
Q: What are the typical applications of TL431CDBVR? A: TL431CDBVR is commonly used in power supplies, battery chargers, voltage regulators, audio amplifiers, and other electronic circuits requiring precise voltage regulation.
Q: What is the maximum output current of TL431CDBVR? A: The maximum output current of TL431CDBVR is typically around 100mA.
Q: How accurate is the voltage reference of TL431CDBVR? A: The voltage reference accuracy of TL431CDBVR is typically within ±1%.
Q: Can TL431CDBVR operate in both positive and negative voltage applications? A: Yes, TL431CDBVR can operate in both positive and negative voltage applications by appropriately connecting the reference pin.
Q: Are there any precautions to consider when using TL431CDBVR? A: Yes, some precautions include ensuring proper heat dissipation, avoiding excessive input voltage, and providing adequate decoupling capacitors for stability.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.