The TL431 AIDBZR is a Precision Adjustable Shunt Regulator and is manufactured by Texas Instruments. It's typically used for voltage regulation and control applications, and it can function as a voltage reference or in feedback regulation systems in various types of circuits.
TL431AIDBZR Package Information:
Package Type: SOT-23-3 (Small Outline Transistor, 3-pin package) Pins: 3 Function: The TL431A is a 3-terminal adjustable shunt regulator, and the SOT-23-3 package contains 3 pins in total.Detailed Pin Function Specifications:
Here’s a detailed description of the TL431AIDBZR's pins and their respective functions:
Pin Number Pin Name Pin Description Function Pin 1 Anode This pin is the anode of the shunt regulator. It is connected to the cathode of the external load in applications such as voltage regulation. The Anode pin is connected to the higher voltage source for regulation. The voltage at this pin is typically higher than the reference pin but lower than the Cathode pin when the device is in regulation. Pin 2 Cathode This pin is the cathode of the shunt regulator. It is connected to the load or the system that requires the regulated voltage. The Cathode pin is where the regulated output voltage appears. The TL431A maintains a constant voltage at the Cathode pin. Pin 3 Reference This is the reference voltage pin of the TL431A. It is used to set the shunt voltage via an external resistor divider network. The Reference pin allows the voltage at the Cathode pin to be adjusted to a specific value by applying a voltage to this pin. Typically, this pin is connected to a resistor network to set the output voltage level.Pin Number and Corresponding Function Summary:
3 Pin Configuration: Anode: Provides the higher voltage input. Cathode: Provides the regulated output voltage. Reference: Sets the output voltage by applying a voltage reference.20 FAQ with TL431AIDBZR:
Here’s a list of 20 common questions related to the TL431AIDBZR and their detailed answers:
Q: What is the primary function of the TL431AIDBZR? A: The TL431AIDBZR is a precision adjustable shunt regulator used for voltage regulation and feedback control in power supplies and various voltage regulation circuits.
Q: How many pins does the TL431AIDBZR have? A: The TL431AIDBZR has 3 pins: Anode, Cathode, and Reference.
Q: What is the recommended operating voltage range for the TL431AIDBZR? A: The TL431AIDBZR operates with a voltage range from 2.5V to 36V across the Anode and Cathode pins.
Q: What is the function of the Anode pin in the TL431AIDBZR? A: The Anode pin is the input side of the device, where the higher voltage is applied. It connects to the power source that needs to be regulated.
Q: How do you adjust the output voltage of the TL431AIDBZR? A: The output voltage is adjusted by applying a reference voltage to the Reference pin via an external resistor divider network.
Q: What type of package is the TL431AIDBZR available in? A: The TL431AIDBZR comes in the SOT-23-3 package, which is a small 3-pin surface-mount package.
Q: What is the typical output voltage for the TL431AIDBZR? A: The typical output voltage is 2.495V when the device is in regulation. However, it can be adjusted using the Reference pin.
Q: How is the TL431AIDBZR used in feedback regulation? A: It is used in feedback regulation by controlling the voltage applied to the Reference pin, which then adjusts the voltage at the Cathode pin.
Q: Is the TL431AIDBZR capable of driving loads directly? A: No, the TL431AIDBZR is a voltage reference regulator, and it requires external components such as a resistor divider to set the output voltage.
Q: Can the TL431AIDBZR regulate negative voltages? A: The TL431AIDBZR is a positive voltage regulator, so it cannot regulate negative voltages directly.
Q: What is the maximum input voltage for the TL431AIDBZR? A: The maximum input voltage is 36V between the Anode and Cathode pins.
Q: What happens if the input voltage exceeds the maximum rating? A: If the input voltage exceeds the maximum rating, it could damage the device, so proper voltage limits must be maintained.
Q: How does the TL431AIDBZR provide voltage regulation? A: The TL431AIDBZR uses its internal reference voltage of 2.495V to regulate the output voltage. By applying a voltage to the Reference pin, it adjusts the Cathode voltage to match the desired value.
Q: Can the TL431AIDBZR be used in a voltage divider configuration? A: Yes, the TL431AIDBZR is often used in a voltage divider configuration where resistors set the desired output voltage.
Q: What is the output tolerance of the TL431AIDBZR? A: The output voltage tolerance is typically ±1% depending on external components used in the circuit.
Q: What is the maximum current that the TL431AIDBZR can handle? A: The TL431AIDBZR can handle up to 100mA of current at the Cathode pin, depending on the specific application.
Q: Can the TL431AIDBZR be used as a current regulator? A: No, the TL431AIDBZR is a voltage regulator and is not designed to regulate current.
Q: What is the typical power dissipation of the TL431AIDBZR? A: The typical power dissipation is low but depends on the input voltage and current applied. It is generally a few milliwatts.
Q: How is the TL431AIDBZR protected against thermal overload? A: The TL431AIDBZR has internal thermal overload protection to safeguard against excessive temperatures.
Q: Is the TL431AIDBZR suitable for high-frequency applications? A: While it is typically used in low-to-medium frequency applications, it can also be used in higher-frequency feedback regulation applications with proper design considerations.
Summary:
The TL431AIDBZR is a versatile adjustable shunt regulator used primarily for voltage regulation in a variety of electronic applications. With its 3 pins (Anode, Cathode, and Reference), it provides an easy solution for creating a regulated voltage. It operates within a voltage range of 2.5V to 36V and requires external components to set the output voltage based on the desired regulation level.