KD1084AV33

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

The KD1084AV33 is a low-drop positive voltage regulator from the KD1084Axx series, manufactured by STMicroelectronics. It provides a fixed output voltage of 3.3 V with a guaranteed maximum output current of 5 A. The device features a typical dropout voltage of 1.3 V at full load and maintains an output tolerance of ±1% at 25 °C, expanding to ±2% across the full temperature range. It operates within a junction temperature range of -40 °C to +125 °C and utilizes DPAK or D2PAK surface-mount packages.

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

• Delivers up to 5 A of output current with tight voltage tolerance for precision applications
• Quiescent current flows into the load rather than being wasted, increasing overall system efficiency
• Requires only a minimum 10 µF capacitor for stability, simplifying external component requirements

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

• Power supply stages for embedded systems requiring stable 3.3 V rails
• Pre-regulator circuits for switching power supplies
• Battery-powered equipment utilizing efficient linear regulation

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

Verify the specific suffix 'V33' against official ST documentation to confirm the fixed 3.3 V output configuration. Ensure the selected package variant (DPAK or D2PAK) matches the thermal and mechanical constraints of the target design. Confirm that the ±1% tolerance specification aligns with the circuit's voltage accuracy requirements before finalizing procurement.

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

Select this component when a high-current 3.3 V rail is required with minimal input-output voltage differential. The 'A' version offers superior output tolerance compared to standard variants. Consider the thermal resistance characteristics of the chosen package to ensure adequate heat dissipation under maximum load conditions without exceeding the 125 °C junction temperature limit.

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

This part belongs to the KD1084 family of low-dropout regulators designed as pin-compatible replacements for older three-terminal adjustable regulators. The KD1084Axx series specifically denotes enhanced performance regarding dropout voltage and output voltage tolerance. It serves as a robust solution for power management in industrial and consumer electronics where space and efficiency are critical factors.

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

The datasheet notes pinout compatibility with standard adjustable voltage regulators. Designers should verify that existing circuit layouts accommodate the specific thermal and electrical characteristics of the KD1084Axx series when substituting legacy components.