NCV1117ST33T3

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

The NCV1117ST33T3G is a fixed-output low dropout linear voltage regulator from the automotive-grade NCV1117 series by onsemi. It provides a fixed 3.3 V output with a maximum continuous current of 1 A. The device supports an input voltage range up to 20 V and operates within a junction temperature range of -40°C to +125°C. It features a dropout voltage of approximately 1.07 V at full load. The component is housed in a SOT-223-3 surface-mount package, ensuring reliable performance in demanding automotive environments while maintaining high line and load regulation.

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

• Automotive-grade reliability certified under AEC-Q100 standards for robust operation in vehicle applications
• Low dropout characteristic enables efficient voltage regulation with minimal power loss across varying input conditions
• Fixed 3.3 V output ensures stable power delivery for sensitive digital logic and peripheral circuits

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

• Power supply stages for automotive electronic control units (ECUs)
• Voltage regulation for infotainment systems and dashboard displays
• Power distribution in sensor interfaces and actuator drivers

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

Verify the complete part number includes the 'G' suffix (NCV1117ST33T3G) to confirm RoHS compliance and lead-free manufacturing status as specified by onsemi. Ensure the ordering code matches the specific tape-and-reel packaging configuration required for automated assembly processes. Cross-reference the datasheet revision date to confirm compatibility with current design specifications and thermal management requirements.

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

Select this component when a fixed 3.3 V rail is required for automotive electronics with currents up to 1 A. The NCV1117 series offers a balance of cost-effectiveness and performance for general-purpose LDO applications. Consider the thermal dissipation capabilities of the SOT-223 package relative to the expected power loss based on input voltage and load current. Verify that the input voltage does not exceed the 20 V maximum rating under all operating transients.

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

This regulator belongs to the NCV1117 family, which is the automotive-qualified version of the popular 1117 LDO series. The family includes various fixed output voltages and adjustable variants, all sharing similar pinouts and thermal characteristics. The NCV prefix specifically denotes components designed to meet the stringent quality and reliability standards required for automotive embedded systems, distinguishing them from commercial-grade counterparts.

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

Direct substitutes include NCV1117ST33T3G and NCP1117ST33T3G. Verify package compatibility and electrical parameter alignment before substitution.