LK115D30-TR

Overview

The LK115D30-TR is a fixed-output linear voltage regulator from the LK115 series, manufactured by STMicroelectronics. It provides a nominal output voltage of 3 V with a maximum load current capability of 100 mA. The device operates within an input voltage range up to 20 V and features a typical dropout voltage of 0.17 V at 60 mA. Quiescent current consumption is specified as 280 µA in active mode and 0.01 µA in shutdown mode. The unit incorporates internal overcurrent and thermal protection mechanisms and supports electronic shutdown via two logic-controlled pins.

Feature Summary

• Dual logic-controlled electronic shutdown inputs for power management
• Internal current limiting and thermal overload protection
• Low quiescent current operation suitable for battery-powered systems

Applications

• Battery-powered portable electronics
• Low noise analog circuitry power supplies
• Embedded system local voltage regulation

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm package integrity and pin alignment upon receipt. Check datasheet specifications against design requirements before integration. Ensure compliance with RoHS directives if applicable to your manufacturing process.

Selection Notes

Select this component when a stable 3 V rail is required with minimal voltage drop under moderate loads. Consider the dual shutdown pins for advanced power sequencing needs. Evaluate the low standby current benefit for energy-constrained designs. Verify that the SO-8 package fits the available PCB footprint constraints.

Part Context

This part belongs to the LK115 family of very low dropout regulators. Other variants include the LK115D33-TR (3.3 V) and LK115D50-TR (5.0 V). All share identical pinouts and protection features but differ in fixed output voltage settings. The series is designed for applications requiring high efficiency and low power consumption.

Replacement Considerations

LK115D33-TR and LK115D50-TR are direct functional substitutes within the same package offering different fixed output voltages.