AP1084K33L-U

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

The AP1084K33L-U is a fixed-mode low dropout positive regulator manufactured by Diodes Incorporated. It provides a fixed 3.3V output with a maximum current capability of 5.0A. The device operates within an input voltage range of 4.7V to 12V and maintains regulation with a maximum dropout voltage of 1.4V at full load. It features built-in thermal shutdown and output current limiting, ensuring protection under overload conditions. The component is housed in a TO-263-3L (D2PAK) surface-mount package.

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

• Fixed 3.3V output configuration for simplified circuit design
• Integrated thermal shutdown and current limiting for robust operation
• Low dropout characteristic enabling efficient power conversion
• Fast transient response suitable for dynamic load applications

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

• High-speed bus termination circuits
• Low current 3.3V logic supply generation
• Video Graphics Array (VGA) card power regulation

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

Verify the specific suffix 'U' indicates tube packaging when sourcing this part number. Confirm that the component meets RoHS compliance standards as specified in the manufacturer documentation. Ensure compatibility with the TO-263-3L footprint during PCB layout planning. Check for any end-of-life notices or recommended alternative parts from the manufacturer before finalizing procurement plans.

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

Select this component when a stable 3.3V rail is required with high current delivery up to 5A. Consider the thermal resistance characteristics of the TO-263-3L package for heat dissipation requirements. Ensure the input voltage remains sufficiently above the output voltage to maintain the necessary dropout margin. Evaluate the need for external capacitors to ensure stability and optimal transient performance.

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

This device belongs to the AP1084 series of low dropout regulators designed for general-purpose power management. The series offers both adjustable and fixed voltage options in various packages including TO-252-3L, TO-263-3L, and TO-220-3L. The AP1084K33L-U specifically targets applications requiring a fixed 3.3V output in a surface-mount form factor.

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

The datasheet explicitly states that the AP1084 is not recommended for new designs and suggests using the AZ1084C as a replacement.