S-T111B43MC-OHCTFU

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

The S-T111B43MC-OHCTFU is a fixed-output low-dropout (LDO) voltage regulator manufactured by ABLIC Inc. It provides a stable 4.3 V output with a maximum load current of 150 mA. The device utilizes a compact SOT-23-5 surface-mount package and operates within an ambient temperature range of -40°C to +85°C. Designed for high efficiency, it features a typical dropout voltage of 80 mV at full load. The regulator incorporates internal protection mechanisms including thermal shutdown and current limiting to ensure reliable operation in portable electronic applications.

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

• Fixed 4.3 V output voltage
• Low dropout voltage characteristic
• Integrated thermal and current protection

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

• Portable battery-powered devices
• Embedded system power supplies
• Sensor circuit biasing

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

Verify the specific suffix OHCTFU against the official datasheet to confirm pin configuration and packaging details. Ensure compatibility with target PCB footprint and thermal requirements. Confirm RoHS compliance status through manufacturer documentation prior to integration.

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

Select this component when a precise 4.3 V rail is required with minimal voltage drop under load. The 150 mA capacity suits low-power microcontrollers and sensors. Evaluate board space constraints due to the small SOT-23-5 form factor.

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

This part belongs to the S-T111 series of LDO regulators from ABLIC. The series is characterized by low quiescent current and high PSRR, making it suitable for noise-sensitive analog circuits in consumer electronics.

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

Check for direct pin-compatible alternatives within the same series offering different fixed voltages or higher current ratings if system requirements change.

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

What is the maximum output current?

The maximum output current is 150 mA.

Does it include short-circuit protection?

Yes, the device includes internal current limiting and thermal shutdown protection.