TL431 Datasheet : Features, Voltage and Current Range, External Resistors, Equivalents and Differences from TL432

 The TL431 is a three-terminal adjustable precision reference device that operates as a low-temperature coefficient zener. It regulates voltages ranging from 2.5 V to 36 V with a current range from 1 mA to 100 mA. The device can be set to any value between Vref and 36 V using external resistors. TL431 has several equivalents, including LM431, TL432, NCV431A, and SCV431A, with TL432 having the same functionality and electrical specifications. TL431 and TL432 have different pinouts for the DBV, DBZ, and PK packages.

TL431 datasheet

The TL431 is a programmable precision reference device that operates as a low temperature coefficient zener

. It is a three-terminal adjustable regulator series with guaranteed thermal stability over applicable temperature ranges

. The device is used in various applications, and you can find detailed ordering and shipping information on the datasheet

. Application notes and deeper understanding of the device can be found on the manufacturer's website

What is the voltage range of TL431

The TL431 voltage range is between 2.5 V and 36 V, which can be regulated with the use of an external voltage divider

. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors

. The TL431A has a reference voltage tolerance of 2.495V ± 1.0%, while the TL431B has a tolerance of 2.495V ± 0.5%

. The device temperature range is extended for the automotive version from -40 °C up to +125 °C

What is the maximum current that TL431 can regulate

The TL431 can regulate currents up to 100 mA

. The maximum standby power supply current is also 100 mA

. However, the output current can be limited to 5 mA with a 5-10% error allowable at 80V

. The TL431LI / TL432LI are pin-to-pin alternatives to TL431 / TL432 and offer better stability, lower temperature drift, and lower reference current for improved system accuracy

. The TL431 operates with a wide current range from 1 mA to 100 mA

What is the voltage range that TL431 can regulate

The TL431 can regulate voltages ranging from 2.5 to 36 V with the use of an external voltage divider

. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors

. The TL431A has a reference voltage tolerance of 2.495V ± 1.0%, while the TL431B has a tolerance of 2.495V ± 0.5%

. The device temperature range is extended for the automotive version from -40 °C up to +125 °C

. The TL431 operates with a wide current range from 1 to 100 mA

What are the recommended external resistors for setting the output voltage of TL431

The output voltage of TL431 can be set to any value between Vref (approximately 2.5 V) and 36 V with two external resistors

. The recommended external resistors for setting the output voltage of TL431 depend on the desired output voltage. Different values of R1 and R2 resistors can be used to get any output voltage and maximum currents between 2.5 V to 36 V

. The current passing through the anode pins and cathode of TL431 should be greater than 1 mA

What is the formula for calculating the external resistors for TL431

The formula for calculating the external resistors for TL431 is R1/R2 = (Vout/Vref) - 1, where R1 is the resistor connected to the anode of TL431, R2 is the resistor connected to the cathode of TL431, Vout is the desired output voltage, and Vref is the reference voltage of TL431, which is approximately 2.5 V

. The cathode current of TL431 should be less than 100 mA at minimum output load current

. The power in the resistor is (5V-3V)^2/R

. The maximum current passing through the anode pins and cathode of TL431 is 100 mA

. There are also online calculator tools available for calculating the external resistors for TL431

TL431 equivalent

TL431 has several equivalents, including LM431, TL432, NCV431A, and SCV431A

. TL431A and TL431B are programmable precision references that are used in a variety of ways

. TL431A and TL431B have different reference voltage tolerances

. TL43xLI is a pin-to-pin alternative to TL431/TL432 and offers better stability, lower temperature drift, and lower reference current for improved system accuracy

. There are also transistor equivalents of TL431 available

What is the purpose of a TL431 equivalent

The purpose of a TL431 equivalent is to provide an alternative to the TL431 device with similar functionality and electrical specifications. TL431 equivalents include LM431, TL432, NCV431A, and SCV431A, among others

. These functionally similar circuits may differ considerably in die size and layout, but they can be used in the same applications as TL431

. TL43xLI is a pin-to-pin alternative to TL431/TL432 and offers better stability, lower temperature drift, and lower reference current for improved system accuracy

. TL431 equivalents are used in various applications, such as onboard regulation, adjustable power supplies, and switching power supplies

.what are the differences between TL431 and TL432

The TL431 and TL432 have exactly the same functionality and electrical specifications

. The only difference between the two is the pinouts for the DBV, DBZ, and PK packages

. Both devices are three-terminal adjustable shunt regulators with a reference voltage tolerance of 0.5% (B Grade) at 25°C, and they can regulate output voltages from 2.495V to 36V with a sink-current capability of 1 mA to 100 mA

. The TL43xLI is a pin-to-pin alternative to TL431/TL432 and offers better stability, lower temperature drift, and lower reference current for improved system accuracy

.