TL431AIDCK
Adjustable precision shunt voltage reference for 2.5-36V applications
Manufacturer： ['rochester', 'analog-devices', 'ti']
series introduction
# Introduction to the TL431AIDCK Product Series
## 1. Overview
The TL431AIDCK is a highly versatile and widely used precision adjustable shunt voltage reference integrated circuit. It belongs to the TL431 family, which has gained significant popularity in the electronics industry due to its excellent performance, reliability, and cost - effectiveness. This product series is designed to provide a stable and accurate reference voltage for a variety of applications, making it an essential component in many electronic circuits.
## 2. Key Features
### 2.1 Precision Voltage Reference
- The TL431AIDCK offers a very precise reference voltage. It can be adjusted over a wide range, typically from 2.5V to 36V. This adjustability allows designers to tailor the reference voltage according to the specific requirements of their circuits, providing flexibility in different applications.
- It has a low temperature coefficient, which means that the reference voltage remains relatively stable over a wide temperature range. This is crucial in applications where temperature variations can affect the performance of the circuit, ensuring consistent operation even in harsh environmental conditions.
### 2.2 High Output Current Capability
- It can sink a relatively high output current, up to 100mA. This high current - sinking ability makes it suitable for driving loads directly or for use in circuits where a significant amount of current needs to be regulated or controlled. For example, it can be used to drive LEDs or other low - power devices without the need for additional buffer circuits in many cases.
### 2.3 Low Dynamic Output Impedance
- The low dynamic output impedance of the TL431AIDCK ensures that the reference voltage remains stable even when there are changes in the load current. This characteristic helps in maintaining the accuracy of the voltage reference and reduces the impact of load variations on the overall circuit performance.
### 2.4 Wide Operating Voltage Range
- It can operate over a wide supply voltage range, typically from 2.5V to 36V. This wide operating voltage range makes it compatible with a variety of power sources and allows it to be used in different types of electronic systems, from low - voltage battery - powered devices to high - voltage industrial applications.
## 3. Package and Pin Configuration
The TL431AIDCK comes in a small - outline integrated circuit (SOIC) package, specifically the SOIC - 8 package. This package is widely used in the electronics industry due to its compact size and ease of handling during the assembly process.
- **Pin 1 (Anode)**: This is the negative terminal of the device. It is typically connected to the ground or the most negative point in the circuit.
- **Pin 2 (Cathode)**: The cathode is the positive terminal of the device. It is connected to the power supply or the load that needs to be regulated.
- **Pin 3 (Reference)**: The reference pin is used to set the output reference voltage. By connecting appropriate resistors between the reference pin, the anode, and the cathode, the user can adjust the reference voltage according to their requirements.
- The remaining pins are used for internal connections and are not typically used in external circuit design.
## 4. Applications
### 4.1 Power Supply Circuits
- In linear and switching power supplies, the TL431AIDCK is used as a voltage reference for feedback control. It helps in regulating the output voltage of the power supply by comparing the actual output voltage with the reference voltage. If the output voltage deviates from the desired value, the feedback loop adjusts the power supply's operation to bring the output voltage back to the set value.
- It can also be used in voltage regulators to improve the accuracy and stability of the regulated output voltage.
### 4.
Images for reference
SOT-363 PKG
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