Texas Instruments UA78M05CDCYR 5V / 500mA Linear Voltage Regulator, SOT-223-4

The Texas Instruments UA78M05CDCYR is a robust, fixed 5V linear voltage regulator designed to provide stable, regulated power for a diverse range of electronic applications. Engineered for reliability, it accepts a wide input voltage range from 7V to 25V and delivers a consistent 5V output with a current capability of up to 500mA, making it an ideal choice for powering sensitive digital logic and microcontroller circuits.

A key advantage of this regulator is its on-card regulation capability, which effectively eliminates noise and distribution problems commonly associated with single-point regulation in larger systems. Its comprehensive suite of internal protection features, including current-limiting, thermal-overload protection, and output transistor safe-area compensation, makes it exceptionally resilient to overloads, short-circuits, and high-power dissipation scenarios, essentially immunising your design against common failure modes.

While serving primarily as a fixed-voltage regulator, the device's architecture also allows for flexibility. It can be used with external components to create adjustable output voltages and currents or act as the power-pass element within a more precise regulator circuit. Requiring no external components for basic operation simplifies design and reduces the bill of materials and board space.

Housed in a compact, surface-mount SOT-223-4 package, it is suitable for space-constrained portable and embedded designs. As a green product manufactured without antimony or brominated flame retardants (Sb/Br), it aligns with modern environmental standards. Its wide operating temperature range from 0°C to 125°C ensures reliable performance in demanding conditions.

Primary Applications

• Power management subsystems
• Portable and battery-powered devices
• Desktop computers and servers
• Computer peripherals
• Communications and networking equipment