Product Overview: LMV431BCM5X - Texas Instruments

The LMV431BCM5X from Texas Instruments is a precision low-voltage adjustable shunt regulator that is designed to maintain a stable output voltage over a wide range of operating conditions. Its adjustable output voltage can be set to any value between V<sub>REF (approximately 1.24V) and 30V with two external resistors. This component is widely used in power supplies, battery chargers, and voltage monitoring applications due to its flexibility and reliability.

Key Features

• Voltage Reference: The LMV431BCM5X features a precise voltage reference of 1.24V with a typical temperature coefficient of only 50 ppm/°C, ensuring consistent performance over temperature variations.
• Adjustable Output: Users can adjust the output voltage from V<sub>REF to 30V by using two external resistors, providing design flexibility for a wide range of applications.
• Low Dynamic Output Impedance: The dynamic output impedance of 0.2Ω (typical) allows the regulator to maintain stable voltage despite load changes.
• Low Bias Current: The LMV431BCM5X has a low typical cathode current of 80µA, contributing to the efficiency of the overall system.
• Temperature Range: This device operates over a wide industrial temperature range of -40°C to 85°C, making it suitable for harsh environments.
• Package: It is available in the small SOT-23 package, which is ideal for space-constrained applications.

Applications

• Adjustable voltage and current references
• Power supplies and battery chargers
• Motor control feedback systems
• Portable and wireless devices
• Energy management
• Automotive electronics

The LMV431BCM5X's ability to operate with a very small cathode current makes it particularly suitable for portable battery-operated equipment. The device's robust design ensures reliable operation even under variable environmental conditions, making it a preferred choice for designers looking for a versatile and dependable voltage reference solution.