TL431CDM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: SOIC-8
• Essence: TL431CDM is a voltage reference IC that provides a stable reference voltage for various applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Reference Voltage Range: 2.495V to 36V
• Operating Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Reference Voltage Tolerance: ±1%
• Cathode Current: 1mA to 100mA
• Anode Current: 1mA to 150mA
• Dynamic Impedance: 0.22Ω

Pin Configuration

The TL431CDM IC has the following pin configuration:

```

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| | --| 1 |-- Anode --| 2 |-- Cathode --| 3 |-- Reference --| 4 |-- N/C --| 5 |-- N/C --| 6 |-- N/C --| 7 |-- N/C --| 8 |-- N/C |____| ```

Functional Features

• Provides a precise and adjustable reference voltage.
• Low dynamic impedance allows for stable regulation.
• Wide operating temperature range for versatile applications.
• Can be used as a shunt regulator or voltage reference.
• High output current capability.
• Low power consumption.

Advantages and Disadvantages

Advantages

• Precise and adjustable reference voltage.
• Wide operating temperature range.
• High output current capability.
• Low power consumption.

Disadvantages

• Limited pin configuration options.
• Requires external components for certain applications.

Working Principles

The TL431CDM operates as a shunt regulator or voltage reference by comparing the reference voltage at its Reference pin with an external voltage divider network. It adjusts the cathode current to maintain a stable output voltage. By changing the resistor values in the voltage divider, the output voltage can be adjusted within the specified range.

Detailed Application Field Plans

The TL431CDM is widely used in various applications, including:

1. Power Supplies: Provides stable reference voltage for voltage regulators and power management circuits.
2. Battery Charging Systems: Ensures precise voltage regulation during battery charging processes.
3. Audio Amplifiers: Used as a voltage reference for biasing and signal conditioning circuits.
4. Industrial Control Systems: Provides accurate voltage references for control and monitoring circuits.
5. Automotive Electronics: Used in automotive voltage regulation systems and sensor interfaces.

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for TL431CDM are:

1. TL431ACD
2. TL431BCD
3. TL431AIDBZR
4. TL431BQDBZR
5. TLVH431AQDBZR

These models offer similar functionality and characteristics, providing flexibility in design choices.

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