Texas Instruments
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TL431ILPR
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TL431ILPR

Product Overview

  • Category: Integrated Circuit
  • Use: Voltage Reference
  • Characteristics: Adjustable Precision Shunt Regulator
  • Package: TO-92, SOT-89, SOIC-8
  • Essence: Programmable Precision Reference
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Reference Voltage Range: 2.495V to 36V
  • Output Current: Up to 100mA
  • Temperature Range: -40°C to +85°C
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Reference Voltage Tolerance: ±1%
  • Cathode Current Range: 1mA to 100mA

Detailed Pin Configuration

The TL431ILPR has three pins:

  1. Anode (A): Connected to the positive terminal of the power supply.
  2. Cathode (K): Connected to the load or ground.
  3. Reference (R): Provides the adjustable reference voltage.

Functional Features

  • Programmable output voltage with a single external resistor.
  • High precision and stability over temperature and time.
  • Low dynamic output impedance.
  • Wide operating current range.
  • Fast response time to changes in input voltage.

Advantages and Disadvantages

Advantages

  • Easy to use and implement in various applications.
  • Provides stable and accurate voltage references.
  • Low cost and widely available.
  • Can be used as a replacement for Zener diodes.

Disadvantages

  • Limited output current capability.
  • Requires an external resistor for programming the output voltage.

Working Principles

The TL431ILPR is a shunt regulator that uses a precision reference voltage to control the output voltage. By adjusting the voltage at the reference pin (R), the output voltage can be set to a desired value. The TL431ILPR compares the reference voltage with the feedback voltage from the cathode pin (K) and adjusts the current flowing through it to maintain a stable output voltage.

Detailed Application Field Plans

The TL431ILPR is widely used in various applications, including:

  1. Voltage regulators: Provides precise and stable reference voltages for linear regulators.
  2. Switching power supplies: Used as a feedback element to control the output voltage.
  3. Battery chargers: Ensures accurate charging voltage levels.
  4. Audio amplifiers: Provides biasing and stabilization for audio circuits.
  5. LED drivers: Maintains constant current for LED lighting applications.

Detailed and Complete Alternative Models

  • TL431AIDBZR: SOT-23 package, adjustable precision shunt regulator.
  • TLVH431AQDBZR: SOT-23 package, low-voltage adjustable precision shunt regulator.
  • TL431BQDBZR: SOT-23 package, adjustable precision shunt regulator with improved accuracy.

These alternative models offer similar functionality and characteristics to the TL431ILPR, providing flexibility in choosing the most suitable option for specific applications.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät TL431ILPR :n soveltamiseen teknisissä ratkaisuissa

  1. What is TL431ILPR?

    • The TL431ILPR is a programmable precision voltage reference used in various technical solutions.

  2. What are the typical applications of TL431ILPR?

    • TL431ILPR is commonly used in voltage regulation, feedback control systems, and precision analog circuits.

  3. How does TL431ILPR work?

    • TL431ILPR operates by comparing a reference voltage to an external voltage and adjusting its output to maintain a stable voltage level.

  4. What is the voltage range of TL431ILPR?

    • The TL431ILPR typically operates within a voltage range of 2.5V to 36V.

  5. What are the key features of TL431ILPR?

    • TL431ILPR features include high precision, low temperature drift, and adjustable output voltage.

  6. How can TL431ILPR be used for overvoltage protection?

    • TL431ILPR can be configured as a shunt regulator to protect sensitive components from overvoltage conditions.

  7. Can TL431ILPR be used in battery charging circuits?

    • Yes, TL431ILPR can be utilized in battery charging circuits to provide precise voltage regulation.

  8. What are the common design considerations when using TL431ILPR?

    • Designers should consider input voltage range, load current requirements, and temperature stability when implementing TL431ILPR.

  9. Are there any alternative devices to TL431ILPR?

    • Yes, alternatives to TL431ILPR include LM431 and references from other manufacturers.

  10. Where can I find detailed application notes for TL431ILPR?

    • Detailed application notes for TL431ILPR can be found on the manufacturer's website or in technical documentation provided with the component.