SI-8090JD-TL

Voltage Regulators - DC DC Switching Regulators Overview

The SI-8090JD-TL is a surface-mount, separate excitation step-down switching mode regulator manufactured by Sanken Electric USA Inc. It provides a fixed positive output voltage of 9V with a maximum output current capacity of 1.5A. The device operates within an input voltage range of 12V to 40V and is housed in a TO-263-5 (D²PAK) package. This integrated circuit is designed for efficient DC-DC conversion applications requiring stable voltage regulation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates switching IC and transformer construction for compact design
• Requires only minimal external components including input/output and soft start capacitors
• Built-in overcurrent protection circuit ensures operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Telephone power supplies
• Onboard local power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TL against official Sanken documentation to confirm lead times and packaging details. Ensure compatibility with TO-263-5 footprints during PCB layout. Cross-reference absolute maximum ratings with system operating conditions to prevent overstress. Confirm thermal management requirements as heatsink usage may vary based on ambient conditions and load profiles.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 9V output is required from a 12V to 40V input source. The 1.5A current rating suits moderate power loads. Consider the TO-263-5 package for surface mount assembly needs. Evaluate thermal dissipation capabilities relative to the expected ambient temperature and enclosure constraints before finalizing the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Sanken's series of separate excitation switching regulators. These devices combine the controller and transformer into a single unit to reduce external component count and noise. The family typically includes variants with different output voltages and current capacities, such as the SI-8811L or SI-8911L, tailored for specific telecommunication and automotive power supply architectures.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other Sanken separate excitation regulators like the SI-8811L or SI-8911L if output parameters align. Verify pinout compatibility and thermal characteristics when considering alternatives from other manufacturers. Ensure replacement parts meet the same input voltage range and current delivery specifications.