TL431BCDCKR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable Precision Shunt Regulator
• Package: SOT-23, 3-Pin
• 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
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Reference Input Current: 0.5μA typical
• Reference Output Impedance: 0.25Ω typical

Pin Configuration

The TL431BCDCKR 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

• Adjustable output voltage with a wide range.
• High precision and stability.
• Low dynamic impedance.
• Low temperature coefficient.
• Fast response time.
• Low power consumption.
• Short-circuit protection.

Advantages and Disadvantages

Advantages

• Versatile and widely used in various applications.
• Easy to use and implement.
• Provides accurate and stable voltage references.
• Can be used as a voltage regulator or voltage monitor.
• Offers excellent line and load regulation.

Disadvantages

• Requires an external resistor for precise voltage setting.
• Limited output current capability.
• Sensitivity to temperature changes.
• Not suitable for high-power applications.

Working Principles

The TL431BCDCKR is a three-terminal adjustable shunt regulator. It operates by comparing the reference voltage at the Reference (R) pin with an external resistor divider network connected to the Anode (A) and Cathode (K) pins. By adjusting the resistance values, the output voltage can be set within the specified range. The TL431BCDCKR acts as a variable resistor between the Anode and Cathode, maintaining a constant voltage across the Reference pin.

Detailed Application Field Plans

The TL431BCDCKR finds extensive use in various applications, including:

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

Detailed and Complete Alternative Models

• TL431ACLP
• TL431BQDBZR
• TL431CDCKR
• TL431IDBVR
• TL431IPKG3
• TL431QDBZR
• TL431AQDBZR
• TL431BIDBZT
• TL431CDBVRE4
• TL431ILPR

These alternative models offer similar functionality and can be used as substitutes for the TL431BCDCKR in various applications.

In conclusion, the TL431BCDCKR is a versatile and widely used integrated circuit that provides adjustable precision voltage references. Its compact SOT-23 package, along with its excellent performance characteristics, makes it suitable for a wide range of applications. However, it has certain limitations, such as the need for an external resistor and limited output current capability. Nonetheless, its advantages outweigh the disadvantages, making it a popular choice among designers and engineers in the electronics industry.