The TS431BCT is a precision adjustable shunt regulator offered by Taiwan Semiconductor. It is a three-terminal adjustable shunt regulator with specified thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5V) and 36V with two external resistors. This device has a typical dynamic output impedance of 0.2Ω. Active trimming ensures a tight tolerance on the reference voltage.

Applications

• Linear regulators
• Adjustable supplies
• Switching power supplies
• Voltage monitors
• Instrumentation

Features

• Programmable output voltage to 36V
• Low dynamic output impedance
• Sink current capability of 1mA to 100mA
• Low output noise
• Fast turn-on response
• Off-state current: 100 nA (typical)

Benefits

• The adjustable output voltage allows for flexible design in various applications.
• The low dynamic output impedance ensures stable regulation.
• The wide sink current capability allows the device to be used in a variety of circuit configurations.
• Low output noise helps in sensitive analog applications.
• Fast turn-on response ensures quick stabilization of the output voltage.

Technical Specifications

The TS431BCT's key specifications include a reference voltage of 2.5V, an adjustable output voltage range from 2.5V to 36V, and a continuous cathode current range of 1mA to 100mA. The device is available in various packages including TO-92 and SOT-23. It operates over an industrial temperature range, typically -40°C to +85°C. The output voltage is set via two external resistors according to the formula: Vout = Vref * (1 + R1/R2), where Vref is the reference voltage, and R1 and R2 are the external resistors.