KD1084DT25R

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KD1084DT25R is a fixed-output low-dropout positive voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 2.5 V with a guaranteed maximum output current of 5 A. The device operates within an input voltage range up to 12 V and features a typical dropout voltage of 1.3 V at full load, decreasing under lighter loads. It utilizes a DPAK surface-mount package and supports an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides stable regulation for high-current applications with a typical dropout voltage of 1.3 V at 5 A.
• Quiescent current flows into the load rather than being wasted, increasing overall system efficiency compared to PNP regulators.
• Requires only a minimum 10 µF tantalum capacitor for stability, simplifying external component requirements.
• Features internal power and thermal limiting protection mechanisms.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• General-purpose linear power supply regulation
• Pre-regulator stages for switching converters
• Biasing circuits requiring stable 2.5 V reference

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering code against official manufacturer documentation to confirm the exact suffix configuration. Ensure compatibility with the required thermal management strategy for the DPAK package. Confirm that the application circuit meets the minimum capacitance requirements specified in the datasheet for stable operation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.5 V output is required with high current capability. Consider the thermal resistance characteristics of the DPAK package relative to the expected power dissipation. Verify that the input voltage remains within the absolute maximum ratings while maintaining sufficient headroom for the dropout voltage.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the KD1084 family of 5 A low-dropout positive voltage regulators. The family includes adjustable versions and various fixed output voltages such as 1.8 V, 3.3 V, and others. The devices are pin-compatible with older three-terminal adjustable regulators but offer improved performance regarding dropout voltage and output tolerance.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult the manufacturer's product selection guide for alternative packages or voltage variants within the KD1084 series. Verify pinout compatibility if substituting with other manufacturers' 5 A LDOs. Check for updated revisions or end-of-life notices for the specific DPAK variant.