TL431AIPK
Adjustable precision shunt voltage regulators for precise voltage control
Manufacturer： ['rochester', 'ti']
series introduction
# Introduction to the TL431AIPK Product Series
## 1. Overview
The TL431AIPK is a highly versatile and widely used adjustable precision 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 TL431AIPK offers a high - precision 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 and reliable operation.
### 2.2 Low Output Impedance
The device has a very low output impedance, typically in the milliohm range. This low impedance enables it to supply a relatively large amount of current without significant voltage drops. As a result, it can drive loads effectively, making it suitable for applications that require a stable voltage source to power other components.
### 2.3 High Current Capability
The TL431AIPK can sink a relatively high current, up to 100mA. This high current - sinking ability makes it suitable for applications where it needs to control or regulate larger currents, such as in power supplies and voltage regulators.
### 2.4 Fast Response Time
It has a fast response time, which allows it to quickly adjust to changes in the input voltage or load conditions. This is important in applications where rapid changes in voltage need to be compensated for, ensuring that the output voltage remains stable and within the desired range.
## 3. Package and Pin Configuration
### 3.1 Package
The TL431AIPK comes in a standard TO - 92 package. The TO - 92 package is a widely used through - hole package that is easy to handle and solder on printed circuit boards (PCBs). It provides good mechanical stability and heat dissipation characteristics, making it suitable for a variety of electronic applications.
### 3.2 Pin Configuration
- **Anode (A)**: The anode pin is connected to the negative terminal of the power supply or the ground in most applications. It is the return path for the current flowing through the device.
- **Cathode (K)**: The cathode pin is the output terminal of the device. It is connected to the load or the circuit that requires the reference voltage. The voltage at the cathode is regulated based on the voltage at the reference terminal.
- **Reference (R)**: The reference pin is used to set the desired reference voltage. By connecting appropriate resistors between the reference pin, cathode, and anode, the user can adjust the output voltage of the TL431AIPK.
## 4. Applications
### 4.1 Power Supplies
- In linear power supplies, the TL431AIPK can be used as a voltage reference to regulate the output voltage. It compares the output voltage with the reference voltage and adjusts the control element (such as a transistor) to maintain a stable output voltage.
- In switching power supplies, it can be used in the feedback loop to ensure that the output voltage remains within the specified tolerance. This helps to improve the efficiency and stability of the power supply.
### 4.2 Voltage Regulators
The device can be used to build simple or complex
Images for reference
SOT-89-3 Pkg
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