Texas Instruments

UA7805CKTER

UA7805CKTER Description

The UA7805CKTER from Texas Instruments is a fixed-output linear voltage regulator designed to deliver a stable 5V output with a maximum current capacity of 1.5A. This surface-mount (SMD) device operates within an input voltage range up to 25V, making it suitable for a wide array of power supply applications. With a low dropout voltage of 2V @ 1A, it ensures efficient regulation even under varying load conditions. The regulator features robust over-temperature and reverse polarity protection, enhancing system reliability. Its 78dB to 68dB PSRR (120Hz) ensures excellent noise suppression, critical for sensitive analog and digital circuits. Packaged in Tape & Reel (TR) for automated assembly, the UA7805CKTER is ROHS3 compliant and adheres to REACH environmental standards.

UA7805CKTER Features

• Fixed 5V Output: Ensures stable voltage regulation for 5V-dependent circuits.
• High Current Capacity: Supports up to 1.5A output current, ideal for powering multiple loads.
• Wide Input Range (Up to 25V): Accommodates varying input sources, including unregulated supplies.
• Low Dropout Voltage: 2V @ 1A minimizes power dissipation, improving efficiency.
• High PSRR (78dB @ 120Hz): Superior noise rejection for clean power delivery.
• Protection Mechanisms: Includes over-temperature and reverse polarity protection for enhanced durability.
• Surface-Mount Design (3-POWERFLEX): Optimized for compact PCB layouts and automated manufacturing.
• Industrial Temperature Range (0°C to 125°C): Suitable for harsh environments.

UA7805CKTER Applications

The UA7805CKTER is ideal for:

• Embedded Systems: Powering microcontrollers, sensors, and peripherals in IoT devices.
• Consumer Electronics: Voltage regulation in set-top boxes, routers, and audio equipment.
• Industrial Controls: Reliable power management for PLCs, motor drivers, and automation systems.
• Automotive Electronics: Auxiliary power for infotainment and dashboard systems (non-safety-critical).
• Test & Measurement Equipment: Providing clean, stable power to precision analog circuits.

Conclusion of UA7805CKTER

The UA7805CKTER stands out as a high-performance linear regulator, combining high current output, robust protection features, and excellent noise immunity. While marked as obsolete, its proven reliability and wide compatibility make it a viable choice for legacy designs or applications requiring a dependable 5V rail. Engineers seeking a balance of efficiency, thermal resilience, and compact form factor will find this regulator well-suited for industrial, consumer, and embedded systems. For new designs, TI’s modern alternatives should be evaluated, but the UA7805CKTER remains a trusted solution for existing implementations.