The 431BIM is a precision adjustable shunt regulator offered by National Semiconductor (now Texas Instruments). It's a three-terminal programmable shunt regulator diode. This versatile component is widely used in various voltage regulation and control applications, offering excellent stability and accuracy.

Applications:

• Switching power supplies
• Adjustable voltage and current regulators
• Error amplifiers
• Linear regulators
• Voltage monitoring

Features:

• Programmable output voltage
• Low dynamic output impedance
• Sink current capability of 1mA to 100mA
• Typical output impedance of 0.2 Ω
• Equivalent full range temperature coefficient typically 30 ppm/°C

Benefits:

• Provides accurate and stable voltage regulation
• Offers flexibility in voltage adjustment
• Reduces component count and simplifies circuit design
• Enhances system reliability due to its precision and stability
• Cost-effective solution for voltage regulation needs

Technical Specifications:

The 431BIM has a programmable output voltage range from Vref (typically 2.5V) to 36V. It features a low dynamic output impedance, ensuring stable operation under varying load conditions. The sink current capability ranges from 1mA to 100mA. The device has a typical temperature coefficient of 30 ppm/°C. The package is usually TO-92 or SOIC. The reference input current is low, typically around 0.5µA. It is designed for operation over a wide temperature range, typically from -40°C to +85°C.

The 431BIM shunt regulator is a versatile and reliable component for precise voltage regulation. Its programmable output voltage, low impedance, and wide operating range make it a popular choice in a variety of electronic applications, providing a cost-effective and stable solution for voltage control requirements.