KD1084ADT25R

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

The KD1084ADT25R is a positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 2.5 V with a tolerance of ±1% at 25 °C and ±2% across the full temperature range. The device supports an output current up to 5 A, featuring a typical dropout voltage of 1.3 V at maximum load. It operates within a junction temperature range of -40 °C to +125 °C and utilizes a DPAK surface-mount package.

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

• Provides high-efficiency regulation where quiescent current flows into the load rather than being wasted as heat.
• Features on-chip trimming for tight output voltage tolerance and guaranteed performance under thermal limits.
• Maintains stability with a minimum external capacitor requirement of 10 µF.

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

• SCSI-2 active termination circuits
• General-purpose power supply regulation
• Embedded system voltage conditioning

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

Verify the specific ordering code KD1084ADT25R against official manufacturer documentation to confirm the fixed 2.5 V output and ±1% tolerance specifications. Ensure the procurement channel sources genuine components from authorized distributors to guarantee compliance with RoHS standards and ECOPACK environmental requirements.

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

Select this component when a stable 2.5 V rail is required for loads drawing up to 5 A. The DPAK package offers a compact solution for surface-mount designs. Consider the thermal resistance characteristics and ensure adequate heatsinking or PCB copper area to manage power dissipation effectively within the specified operating temperature range.

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

This part belongs to the KD1084xx family of low-dropout regulators designed to replace older three-terminal adjustable regulators. The 'A' suffix indicates enhanced accuracy compared to standard versions, while the 'DT' designation specifies the DPAK package configuration. It shares pinout compatibility with legacy devices but delivers superior dropout performance.

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

KD1084D2M25

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

What is the minimum capacitance required for stability?

A minimum of 10 µF is required for stability.

How does the quiescent current behavior differ from PNP regulators?

Unlike PNP regulators that waste quiescent current as heat, the KD1084 quiescent current flows into the load, increasing overall efficiency.