Texas Instruments

UA7812CKCT

UA7812CKCT Description

The UA7812CKCT from Texas Instruments is a fixed 12V linear voltage regulator designed to deliver a stable 1.5A output current with an input voltage range up to 30V. Housed in a TO-220-3 package, this obsolete but robust component remains a reliable choice for legacy designs requiring high-performance voltage regulation. It features a low dropout voltage of 2V @ 1A, ensuring efficient operation even with marginal input voltages. With 68dB PSRR (120Hz), it effectively suppresses input ripple, making it suitable for noise-sensitive applications. The device operates across a wide temperature range of 0°C to 125°C and includes comprehensive protection against overcurrent, overtemperature, reverse polarity, and short circuits.

UA7812CKCT Features

• Fixed 12V Output: Ensures consistent voltage regulation without adjustable components.
• High Current Capacity: Supports 1.5A continuous output, ideal for powering medium-load circuits.
• Robust Protection: Integrated safeguards against overcurrent, overtemperature, reverse polarity, and short circuits.
• Low Dropout Voltage: 2V @ 1A minimizes power dissipation, enhancing efficiency.
• High PSRR: 68dB (120Hz) reduces noise for cleaner power delivery.
• Wide Operating Temperature: Reliable performance from 0°C to 125°C.
• Through-Hole Mounting: Easy integration into PCB designs for industrial and consumer applications.
• RoHS3 Compliant: Meets environmental standards for hazardous substance restrictions.

UA7812CKCT Applications

• Power Supplies: Ideal for 12V DC power rails in industrial control systems, test equipment, and audio amplifiers.
• Automotive Electronics: Suitable for aftermarket automotive modules requiring stable 12V regulation.
• Consumer Electronics: Powers gadgets, displays, and peripherals needing reliable voltage conversion.
• Embedded Systems: Provides clean power to microcontrollers, sensors, and communication modules.
• Legacy Equipment Maintenance: A go-to choice for repairing or replacing older linear regulators in obsolete systems.

Conclusion of UA7812CKCT

The UA7812CKCT stands out as a high-reliability, fixed-voltage regulator with superior protection features and excellent noise rejection. While marked as obsolete, its rugged design and broad compatibility make it a practical solution for existing designs or applications demanding durability. Engineers seeking a simple, no-frills 12V regulator with high current capability will find this component a dependable option, particularly in industrial, automotive, and legacy systems. Its ease of use and robust performance ensure continued relevance in specialized use cases.