LDK220U30R

Overview

The LDK220U30R is a fixed-output low-dropout linear regulator manufactured by STMicroelectronics, providing a nominal 3.0 V output with a maximum load current of 200 mA. It operates from an input voltage range of 2.5 V to 13.2 V and features a typical dropout voltage of 100 mV at 100 mA. The device incorporates logic-controlled electronic shutdown, reducing quiescent current to 1 µA in off mode, and includes internal thermal and short-circuit protection. It is designed for stability with ceramic capacitors as small as 1 µF.

Feature Summary

• Logic-controlled electronic shutdown function enables ultra-low power consumption in standby modes
• Capable of driving up to 200 mA while maintaining very low dropout voltage characteristics
• Integrated thermal limit and constant current limiting protect against overload conditions
• Compatible with small ceramic output capacitors for stable operation

Applications

• Battery-powered portable equipment
• Set-top boxes and television systems
• Personal computers and laptop devices
• Industrial control modules

Procurement Notes

Verify the specific suffix 'U30' confirms the fixed 3.0 V output variant during procurement. Confirm package availability matches design requirements, as the LDK220 series supports multiple form factors including SOT-89, SOT23-5L, SOT323-5L, and DFN6. Ensure environmental compliance grades align with project specifications before finalizing orders.

Selection Notes

Select this component when a fixed 3.0 V rail is required with minimal external circuitry. The low quiescent current makes it suitable for battery-operated designs where standby power is critical. Verify that the input voltage remains within the 2.5 V to 13.2 V range and that the thermal dissipation capabilities of the chosen package can handle the expected power load under worst-case conditions.

Part Context

The LDK220 series represents STMicroelectronics' portfolio of low-noise, low-quiescent current LDO regulators. This family targets applications requiring high efficiency and compact footprints. The U30 designation specifically identifies the fixed 3.0 V output version within the broader LDK220 product line, which offers various voltage options and packaging styles.

Replacement Considerations

Consult official obsolete product lists for confirmed substitutes. Cross-reference pinouts and electrical parameters carefully if considering alternative manufacturers.