TL431BIDCKTG4 - Precision Programmable Reference

The TL431BIDCKTG4 from Texas Instruments is a highly precise programmable voltage reference, part of the industry-standard TL431 series. This three-terminal adjustable shunt regulator is designed with a specified thermal stability over applicable automotive, commercial, and military temperature ranges. The device features a typical output voltage of 2.495 volts and can be adjusted from Vref (approximately 2.495 volts) to 36 volts with two external resistors.

With a guaranteed temperature coefficient as low as 0.2 mV/°C over the entire temperature range, the TL431BIDCKTG4 offers excellent stability and low dynamic output impedance, which ensures reliable performance in a wide array of applications. Its output voltage can be set to any value between Vref (the reference voltage) and 36 volts with the use of two external resistors, providing design flexibility.

This device is supplied in a small outline integrated circuit (SOIC) package, specifically in a 5-pin SOT-23 configuration, which is optimal for automated surface-mount assembly processes and space-constrained applications. The TL431BIDCKTG4 is commonly used for voltage regulation in power supplies, as a replacement for zener diodes in many applications due to its lower output impedance, and as a voltage reference in precision circuits.

Key features of the TL431BIDCKTG4 include:

• Programmable Output Voltage to 36 V
• Voltage Reference Accuracy: ±0.5% at 25°C, ±1% over the full temperature range
• Low Dynamic Output Impedance: 0.22 Ω typical
• Typical Output Noise Voltage: 0.6 μV/V
• Fast Turn-on Response
• Low Temperature Deviation: 6.8 mV typical
• Operating Temperature Range: -40°C to 85°C

Whether it's for power supply stabilization, precision voltage regulation, or a reliable reference voltage in your circuit, the TL431BIDCKTG4 is a versatile and dependable choice that delivers consistent performance. Its precision and programmability make it a go-to component for engineers and designers across various industries.