SC4808AIMSTRT

AC DC Converters, Offline Switchers Overview

The SC4808AIMSTRT is a dual-ended, high-frequency integrated PWM controller from Semtech Corporation. It is optimized for isolated applications requiring minimal space and supports both current and voltage mode operation configurations. The device features a 120µA starting current, pulse-by-pulse current limit, and programmable operation up to 1MHz. It includes internal soft start, programmable line undervoltage lockout, over-current shutdown, and dual output drive stages in a push-pull configuration. Additional features include programmable internal slope compensation, external frequency synchronization, and bi-phase mode of operation. It operates within a temperature range of -40 to 105 °C and is housed in a 10-pin MSOP lead-free package.

AC DC Converters, Offline Switchers Feature Summary

• Dual-ended high-frequency PWM controller optimized for isolated applications with minimal space requirements
• Configurable for current or voltage mode operation using secondary side error amplifier
• Includes dual output drive stages in a push-pull configuration with programmable internal slope compensation
• Supports external frequency synchronization and bi-phase mode operation to reduce input ripple

AC DC Converters, Offline Switchers Applications

• Telecom equipment and power supplies
• Networking power supplies
• Industrial power supplies
• Push-pull converter topologies
• Half bridge and full bridge converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific ordering suffix against official Semtech documentation to confirm package type and tape-and-reel specifications. Ensure compliance with RoHS and WEEE directives as stated in the datasheet. Confirm that the 10-pin MSOP lead-free package matches your PCB footprint requirements. Check for any specific handling instructions related to the surface-mount technology used in this component series.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for designs requiring dual-ended drive stages in isolated power conversion topologies. It is suitable for applications needing programmable switching frequencies up to 1MHz and bi-phase operation capabilities. Consider its low starting current and compact 10-pin MSOP package for space-constrained environments. Evaluate its compatibility with secondary side error amplifier configurations if voltage mode control is preferred.

AC DC Converters, Offline Switchers Part Context

The SC4808A/B series represents Semtech's solution for high-performance isolated DC-DC converters. It integrates primary side control functions typically requiring multiple discrete components. The device simplifies design by offering programmable parameters such as UVLO, soft start, and slope compensation. Its architecture supports various isolated converter topologies including push-pull, half-bridge, and full-bridge configurations commonly found in telecom and industrial sectors.

AC DC Converters, Offline Switchers Replacement Considerations

SC4808AIMSTR is the non-tape-and-reel variant of the same component. Verify pinout and electrical characteristics remain identical before substitution. No other direct cross-references are documented in the provided source material.