SI-8050SD

Voltage Regulators - DC DC Switching Regulators Overview

The SI-8050SD is a surface-mount step-down switching regulator IC manufactured by Sanken Electric USA Inc. It operates with an input voltage range of 5.5 V to 28 V and provides a fixed 5.0 V output at up to 3 A. The device integrates a 60 kHz reference oscillator, internally adjusted phase correction, and soft-start functionality via the S.S pin. Key protection features include built-in overcurrent and thermal shutdown circuits. It is housed in a TO-263 (D2PAK) package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 60 kHz internal reference oscillator for simplified external component requirements.
• Includes built-in overcurrent and thermal protection circuits for system reliability.
• Supports output ON/OFF control and offers soft-start capability through the S.S pin.

Voltage Regulators - DC DC Switching Regulators Applications

• Local power supplies for telecommunication equipment
• Onboard power distribution systems
• General-purpose DC/DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and revision level against the manufacturer's latest datasheet to ensure compatibility with current production standards. Confirm RoHS compliance status and check for any Product Change Notices (PCN) or End-of-Life announcements prior to finalizing design-in decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact surface-mount solution is required for high-current buck applications. The integrated oscillator and phase correction reduce external part count compared to non-integrated alternatives. Ensure the operating temperature range meets the environmental requirements of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the SI-80xxW series of surface-mount separate excitation step-down switching mode regulators. It shares architectural similarities with other members like the SI-8033SD and SI-8050W, differing primarily in output voltage configuration and package type variations within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer for direct replacements or evaluate parameter-equivalent devices from other vendors if obsolescence occurs.