S-19903AA-A8T1U7

Voltage Regulators - DC DC Switching Regulators Overview

The S-19903AA-A8T1U7 is a synchronous rectification step-down DC/DC converter manufactured by ABLIC Inc. It operates with an input voltage range of 2.5 V to 16 V and provides a fixed output voltage of 3.3 V. The device supports a maximum output current of 600 mA and utilizes a buck topology. It features a switching frequency of 400 kHz and is housed in an HSNT-8 surface-mount package. The component functions within a temperature range of -40°C to +125°C, ensuring reliable performance in demanding environments.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced efficiency
• Integrated power switch eliminating external components
• Fixed output voltage configuration for simplified design

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• On-board navigation units
• Telematics control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'A8T1U7' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications and pin assignment compatibility. Ensure that the fixed 3.3 V output aligns with the target circuit requirements, as adjustable variants exist within the same series. Confirm RoHS compliance status through the latest datasheet revision before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V supply is required from a 2.5 V to 16 V input source. The 600 mA output capability suits moderate load applications. Consider the HSNT-8 package for space-constrained designs. Verify thermal dissipation requirements at maximum load conditions due to the integrated power switch design. Compare against adjustable variants if variable output voltage flexibility is needed instead.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the S-19903 series of automotive-grade synchronous rectification DC/DC converters. The series is designed for high reliability in automotive electronics, featuring wide input voltage ranges and extended temperature operation. The S-19903AA variant specifically offers a fixed 3.3 V output, distinguishing it from other models in the family that may provide different fixed voltages or adjustable outputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other S-19903 series parts with identical HSNT-8 packaging and 3.3 V output, such as S-19903BA-A8T1U7, provided input voltage and current ratings match. Cross-reference pinouts and thermal characteristics carefully. Adjustable output versions like S-19903DA require external resistor networks and are not direct pin-compatible replacements without circuit modification.