TL431CLPR

Product Overview

• Category: Integrated Circuit (IC)
• 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
• 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: 0.5μA typical
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

The TL431CLPR has three pins:

1. Anode (A): Connected to the reference voltage input.
2. Cathode (K): Output pin connected to the load.
3. Reference (R): Connected to a resistive voltage divider for setting the desired output voltage.

Functional Features

• Programmable output voltage with a simple resistive voltage divider.
• High precision and stability over temperature and time.
• Low dynamic impedance allows for excellent regulation characteristics.
• Wide operating voltage range.
• Low reference input current minimizes power consumption.

Advantages and Disadvantages

Advantages

• Easy to use and configure.
• Provides precise and stable reference voltage.
• Can be used in various applications due to its wide voltage range.
• Low power consumption.
• Cost-effective solution.

Disadvantages

• Limited output current capability.
• Requires an external resistive voltage divider for setting the output voltage.

Working Principles

The TL431CLPR is a precision shunt regulator that operates by comparing the reference voltage at the Reference (R) pin with the voltage at the Anode (A) pin. It adjusts the Cathode (K) pin voltage to maintain a constant voltage difference between R and K, thus regulating the output voltage.

Detailed Application Field Plans

The TL431CLPR finds applications in various fields, including:

1. Voltage regulation in power supplies.
2. Battery charging circuits.
3. Voltage monitoring and protection circuits.
4. Precision instrumentation.
5. Audio amplifiers.
6. LED drivers.
7. Switching power supplies.

Detailed and Complete Alternative Models

Some alternative models to TL431CLPR include:

1. TLV431: Low-voltage version of TL431.
2. LM4040: Precision shunt voltage reference.
3. LT1009: Precision reference with low temperature drift.
4. REF02: High-precision voltage reference.

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

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