The TL431MJB from Texas Instruments is a precision programmable reference that offers exceptional performance and flexibility. This versatile three-terminal adjustable shunt regulator features a guaranteed thermal stability over the entire temperature range of operation. It operates as a precision current regulator when combined with an external resistor divider, making it suitable for a wide array of applications including power supplies and op-amp circuitry.

Key Features

• Adjustable Output Voltage: The TL431MJB can be programmed from the standard Vref of 2.495 volts up to 36 volts with two external resistors.
• Low Output Noise: It is designed to maintain low noise characteristics, making it ideal for precision electronics where noise can be a critical factor.
• High Stability: The device features a typical temperature coefficient of only 50 ppm/°C, ensuring reliable operation under varying conditions.
• Low Dynamic Output Impedance: Its dynamic output impedance of 0.22 ohms contributes to stable load regulation and response to load changes.

Applications

• Adjustable Power Supplies
• Voltage Monitoring
• Switching Power Supplies
• Linear Regulators
• Current Regulators

Quality and Reliability

The TL431MJB is encapsulated in a hermetically sealed metal can (TO-46 package) which ensures high reliability and resistance to environmental conditions. Texas Instruments is known for its commitment to quality, and this product is no exception, undergoing rigorous testing to meet high standards.

Technical Specifications

With a wide operating temperature range of -55°C to +125°C and the ability to source up to 100 mA of current, this voltage reference can be used in even the most demanding of environments. Its typical output impedance and fast turn-on response time make it a robust choice for critical applications that require a stable reference voltage.

For designers and engineers looking for a dependable and adjustable voltage reference, the TL431MJB from Texas Instruments is an excellent choice that combines performance with versatility.