STMicroelectronics KF50BDT-TR 5V 500mA Linear Voltage Regulator in DPAK Package

Reliable Voltage Regulation with STMicroelectronics KF50BDT-TR

In modern electronic systems, stable power delivery remains a critical requirement across industrial, automotive, and consumer applications. The STMicroelectronics KF50BDT-TR linear voltage regulator emerges as a robust solution for engineers seeking precise 5V output regulation with exceptional thermal stability and protection features. This surface-mount device combines high performance with compact packaging, making it ideal for space-constrained designs requiring dependable power management.

Technical Excellence in Voltage Regulation

Operating within a 40°C to 125°C temperature range, this fixed-output regulator delivers 500mA of continuous current while maintaining a maximum dropout voltage of 0.7V at full load. Its advanced architecture achieves impressive ripple rejection ratios between 60dB and 76dB across frequencies from 120Hz to 10kHz, ensuring clean power delivery even in noisy environments. The device's thermal shutdown and overcurrent protection mechanisms provide critical safeguards against operational stressors, enhancing system reliability in demanding applications.

Design Versatility and Application Scope

Engineers in automotive electronics, industrial control systems, and consumer devices increasingly turn to this regulator for its combination of performance characteristics. The DPAK package enables efficient heat dissipation through its exposed tab structure, while surface-mount compatibility simplifies PCB layout and manufacturing processes. Designers appreciate the device's ability to maintain regulation under varying load conditions, making it suitable for battery-powered systems requiring consistent voltage levels.

The KF50BDT-TR's low quiescent current (1mA typical) and minimal external component requirements contribute to overall system efficiency. Its tape-and-reel packaging format supports automated assembly processes, aligning with modern manufacturing demands for high-volume production. When integrated into power supply designs, this regulator demonstrates exceptional transient response characteristics, maintaining output stability during sudden load changes.

Advanced Protection Features

Beyond basic regulation, this STMicroelectronics component incorporates comprehensive protection mechanisms. Thermal shutdown prevents damage from excessive junction temperatures, while integrated current limiting protects against short-circuit conditions. These built-in safeguards reduce the need for external protection circuitry, streamlining design complexity while enhancing field reliability. The device's robust construction meets automotive-grade quality standards, making it suitable for under-hood applications and other harsh operating environments.

Thermal Performance and Packaging

The DPAK (TO-252-3) package strikes an optimal balance between thermal performance and board space efficiency. Its three-terminal configuration simplifies PCB layout, while the exposed tab facilitates heat transfer to the underlying copper planes. Designers can maximize thermal efficiency by incorporating proper copper area calculations during layout, ensuring reliable operation at full current capacity. This packaging format also enables compatibility with standard reflow soldering processes, maintaining manufacturing flexibility.

Tags: Voltage Regulation, Electronic Components, Power Management, Semiconductor Devices, Industrial Electronics