SC4808BIMSTRT

Overview

The SC4808BIMSTRT is a high-performance dual-ended PWM controller from Semtech Corporation, designed for isolated power applications requiring minimal space. It supports both current-mode and voltage-mode operation with secondary side error amplifier control. Key electrical parameters include a 12V nominal input voltage range of 12V to 16V, operating temperatures from -40°C to 105°C, and programmable switching frequencies up to 1MHz. The device features internal soft start, pulse-by-pulse current limit, and programmable line undervoltage lockout. It is housed in a 10-pin MSOP lead-free package compliant with WEEE and RoHS standards.

Feature Summary

• Dual output drive stages configured in push-pull topology for isolated converter topologies
• Programmable operation supporting peak current mode or voltage mode control
• Integrated protection mechanisms including over-current shutdown and internal soft start

Applications

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

Procurement Notes

Verify the specific suffix 'STR' indicates tape and reel packaging when sourcing. Confirm that the component meets current environmental compliance standards such as RoHS and WEEE. Ensure the operating temperature range aligns with system requirements. Check for any design-in restrictions or obsolescence notices from Semtech Corporation before finalizing procurement plans.

Selection Notes

Select this controller for isolated applications requiring dual-ended drive configurations like push-pull or half-bridge topologies. It is suitable where space constraints necessitate an integrated solution with programmable frequency and mode selection. Consider the thermal performance within the specified industrial temperature range and the need for external slope compensation programming.

Part Context

The SC4808BIMSTRT belongs to the SC4808 series of high-frequency integrated PWM controllers. This series is optimized for isolated power conversion architectures. The device integrates essential control functions to reduce external component count while maintaining high efficiency and dynamic response capabilities in demanding power supply environments.

Replacement Considerations

The SC4808C and SC4808B variants are documented as similar parts within the same product family. Verify pin compatibility and electrical specifications before substitution. No other public confirmed substitute part numbers are available in the provided documentation.