TL431CLPM

Product Overview

• Category: Integrated Circuit
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: TO-92, SOT-23, SOIC-8
• Essence: Programmable Precision Reference
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: 1mA to 100mA
• Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Reference Voltage Tolerance: ±0.5% (max)

Detailed Pin Configuration

The TL431CLPM has three pins:

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

Functional Features

• Programmable output voltage with two external resistors.
• Low dynamic output impedance.
• High stability over temperature and time.
• Fast response time to changes in input voltage.
• Low operating current.

Advantages

• Wide range of adjustable output voltages.
• High precision and accuracy.
• Low cost and readily available.
• Easy to use and implement.
• Suitable for various applications.

Disadvantages

• Limited output current capability.
• Requires external resistors for voltage adjustment.
• Not suitable for high-power applications.

Working Principles

The TL431CLPM is a precision shunt regulator that maintains a stable output voltage regardless of input variations. It operates by comparing the reference voltage at the R pin with a fraction of the output voltage. By adjusting the resistors connected to the R and K pins, the desired output voltage can be set.

Detailed Application Field Plans

The TL431CLPM is widely used in various applications, including:

1. Voltage regulation in power supplies.
2. Battery charging circuits.
3. Switching power converters.
4. Audio amplifiers.
5. LED drivers.
6. Industrial control systems.
7. Automotive electronics.
8. Precision measurement equipment.

Detailed and Complete Alternative Models

Some alternative models to TL431CLPM include:

1. LM4040: Precision Micropower Shunt Voltage Reference.
2. LT1009: Precision Reference with Adjustable Output.
3. REF02: Precision Voltage Reference.
4. MAX6126: Ultra-High-Precision Voltage Reference.
5. ADR421: Precision Micropower Low Dropout Voltage Reference.

These alternatives offer similar functionality and characteristics, providing options for different design requirements.

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