TL431BQD

Product Overview

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

Specifications

• Reference Voltage Range: 2.495V to 36V
• Output Current: 1mA 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)

Pin Configuration

The TL431BQD has a standard SOIC-8 package with the following pin configuration:

```

---

| | --| 1 |-- Anode --| 2 |-- Cathode --| 3 |-- NC (No Connection) --| 4 |-- NC (No Connection) --| 5 |-- NC (No Connection) --| 6 |-- NC (No Connection) --| 7 |-- Reference --| 8 |-- Cathode |____| ```

Functional Features

• Programmable output voltage reference
• High precision and stability
• Low dynamic impedance
• Wide operating voltage range
• Low temperature coefficient
• Fast response time

Advantages and Disadvantages

Advantages

• Provides precise and stable voltage reference
• Easy to use and integrate into various circuits
• Wide operating voltage range allows for versatile applications
• Low temperature coefficient ensures accuracy over temperature variations
• Fast response time enables quick regulation

Disadvantages

• Limited output current capability
• Requires external components for proper operation
• Sensitivity to noise and fluctuations in input voltage

Working Principles

The TL431BQD is a precision shunt regulator that operates by comparing the reference voltage at its internal reference pin with an external voltage divider network. It adjusts its cathode current to maintain a constant voltage across the reference pin, thereby regulating the output voltage.

Detailed Application Field Plans

The TL431BQD finds applications in various fields, including:

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

Detailed and Complete Alternative Models

Some alternative models to TL431BQD include:

1. TLV431AIDBZR
2. LM4040AIM3-2.5/NOPB
3. REF3030AIDBZT
4. MAX6126AASA25+
5. LT1461ACS8-5#PBF

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

In conclusion, the TL431BQD is a programmable precision shunt regulator that provides a stable and accurate voltage reference. Its wide range of applications, high precision, and ease of use make it a popular choice in various electronic circuits.