S-1333A12-A4T2U3

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

The S-1333A12-A4T2U3 is a fixed-output CMOS low-dropout (LDO) voltage regulator manufactured by ABLIC. It provides a nominal output voltage of 1.2 V with a maximum load current capability of 300 mA. The device operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 140 mV at full load. It incorporates reverse current protection, overcurrent protection, and thermal shutdown functions for enhanced reliability. The regulator is housed in a compact HSNT-1010-4 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

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

• Integrated reverse current protection prevents backflow from output to input when the input voltage drops below the output level.
• Built-in overcurrent protection and thermal shutdown circuits safeguard the device against short-circuit conditions and excessive heat generation.

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

• Power supply regulation for portable electronic devices requiring stable low-voltage rails
• Biasing circuits for sensors and analog components in consumer electronics
• Voltage regulation in battery-powered systems where low quiescent current is critical

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

Verify the specific output voltage tolerance and package marking code directly with ABLIC or authorized distributors before procurement. Confirm that the HSNT-1010-4 footprint matches your PCB design guidelines. Ensure compliance with RoHS directives and check for any regional distribution restrictions applicable to this component series.

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

Select this regulator when a fixed 1.2 V output is required with up to 300 mA load capacity. It is suitable for applications needing reverse current blocking and robust protection features. Compare dropout characteristics and quiescent current against other LDOs if power efficiency under light loads is a primary design constraint.

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

This component belongs to the S-1333 series of CMOS LDO voltage regulators from ABLIC. The series is characterized by high ripple rejection ratios and low standby current consumption. The S-1333A12 variant specifically targets applications demanding precise 1.2 V regulation with integrated safety mechanisms, fitting into the broader portfolio of power management ICs designed for mobile and industrial electronics.

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

Direct substitutes include other S-1333 series variants with different fixed output voltages, such as S-1333A18 or S-1333A25, provided the system voltage requirements align. Cross-referencing pinouts and thermal performance is essential when considering alternative manufacturers' LDOs with similar 300 mA ratings and HSNT-4 packages.