LDK220U32R

Overview

The LDK220U32R is a fixed-output low-dropout linear regulator manufactured by STMicroelectronics, providing a nominal 3.2 V output with a maximum current of 200 mA. It operates within an input voltage range of 2.5 V to 13.2 V and features a typical dropout voltage of 100 mV at 100 mA load. The device incorporates logic-controlled electronic shutdown, reducing quiescent current to 1 µA in off mode. It includes internal current limiting and thermal protection, ensuring stability with ceramic capacitors as small as 1 µF.

Feature Summary

• Logic-controlled electronic shutdown enables ultra-low power consumption in standby modes
• Integrated short-circuit constant current limiting and thermal protection safeguards the device
• Compatible with small ceramic output capacitors for stable operation

Applications

• Battery-powered equipment
• Set-top box
• PC and laptop
• Industrial systems

Procurement Notes

Verify the specific suffix 'U32R' against official documentation to confirm the exact output voltage tolerance and package configuration. Ensure compatibility with the required SOT-89 or SOT23-5L footprint during procurement. Confirm RoHS compliance status matches project requirements before finalizing orders.

Selection Notes

Select this component when a fixed 3.2 V rail is required with minimal external components. The low quiescent current makes it suitable for battery-operated devices where standby power is critical. Verify that the input voltage remains within the 2.5 V to 13.2 V range under all operating conditions.

Part Context

The LDK220 series represents a family of low-quiescent-current LDOs designed for portable applications. This specific part number denotes a fixed output variant within the broader LDK220 lineup, which offers various voltage options and packages including SOT-89, SOT23-5L, and DFN6.

Replacement Considerations

Consult the official datasheet for cross-reference information. No public substitute part numbers are confirmed in the provided source material.