TLVH431AQDBVR Adjustable Precision Shunt Regulator

The TLVH431AQDBVR from Texas Instruments is a low-voltage three-terminal adjustable shunt regulator with a specified thermal stability over applicable automotive, commercial, and military temperature ranges. This precision regulator is designed to be more flexible and versatile compared to standard zener diodes in a variety of applications.

With a typical output impedance of 0.2 ohms, the TLVH431AQDBVR offers excellent regulation over a wide range of operating conditions. The device features a minimum cathode current requirement as low as 70µA for the device to maintain a stable voltage, making it suitable for low power applications. The output voltage can be set to any value between V<sub>REF (approximately 1.24 volts) and 18 volts with two external resistors.

This shunt regulator is offered in a small SOT-23 package, which is ideal for space-constrained applications. The TLVH431AQDBVR is characterized for operation from –40°C to 125°C, ensuring reliable performance in a broad range of environments.

Key features of the TLVH431AQDBVR include:

• Adjustable output voltage from V<sub>REF to 18V
• Low dynamic output impedance: 0.2 ohms typical
• Fast turn-on response
• Low output noise
• Low minimum cathode current requirement: 70µA
• Temperature-compensated for industrial and automotive applications
• SOT-23 package for compact footprint

Applications for the TLVH431AQDBVR are diverse and include adjustable voltage and current references, zener diode replacements, and precision current limiters. Its ability to operate with low currents and maintain accurate voltage regulation makes it an excellent choice for battery-powered devices, portable equipment, and energy-sensitive applications.

With Texas Instruments' reputation for high-quality components, the TLVH431AQDBVR shunt regulator is a reliable and efficient solution for designers looking to improve their power management systems with precision and flexibility.