NCV4274ST33T3G

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

The NCV4274ST33T3G is a fixed-output low-dropout (LDO) voltage regulator manufactured by onsemi. It provides a stable 3.3 V output with a maximum load current of 400 mA. The device features a typical quiescent current of 150 uA and offers a typical power supply rejection ratio (PSRR) of 60 dB. It operates within an input voltage range supporting up to 28 V, with a maximum dropout voltage of 1.33 V at full load. The unit is housed in a SOT-223-3 surface-mount package and is qualified to AEC-Q100 standards for automotive applications.

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

• Automotive-grade reliability certified under AEC-Q100 standards
• Low quiescent current operation for efficient power management
• High power supply rejection ratio for clean output regulation

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

• Automotive infotainment systems
• Body control modules
• Sensor power supplies in vehicle networks

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

Verify the specific suffix 'ST33T3G' against the official onsemi datasheet to confirm the fixed 3.3 V output and SOT-223-3 packaging configuration. Ensure the component meets AEC-Q100 qualification requirements if deployed in automotive environments. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before procurement.

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

Select this component when a fixed 3.3 V rail is required with up to 400 mA load capability in space-constrained designs. The SOT-223-3 package offers a compact footprint suitable for surface-mount assembly. Consider the 150 uA quiescent current for battery-operated or efficiency-sensitive applications. Verify that the input voltage does not exceed the absolute maximum rating during transient conditions.

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

This LDO belongs to the NCV4274C series from onsemi, designed for robust performance in demanding environments. The series includes variants with different output voltages and current ratings, all sharing similar low-noise and high-rejection characteristics. The NCV prefix indicates automotive-grade qualification, distinguishing it from commercial counterparts.

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

Check for direct pin-compatible alternatives within the same NCV4274 family or other AEC-Q100 qualified LDOs offering identical 3.3 V output and 400 mA current capacity. Ensure thermal performance and package dimensions match the existing design constraints.