SC4808B-2MSTRT

Overview

The SC4808B-2MSTRT is a dual-ended, high-frequency integrated PWM controller optimized for isolated applications requiring minimal space. It supports current or voltage mode operation with secondary side error amplifier control. Key electrical parameters include a starting current of 120µA, programmable switching frequency up to 1MHz, and an operating temperature range of -40°C to 105°C. The device features internal soft start, programmable line undervoltage lockout, over-current shutdown, and dual output drive stages in a push-pull configuration.

Feature Summary

• Supports both peak current mode and voltage mode operation for flexible control loop design
• Features dual output drive stages configured in a push-pull topology
• Includes internal slope compensation and programmable line undervoltage lockout

Applications

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

Procurement Notes

Verify the specific suffix designation against official Semtech documentation to confirm pinout compatibility and thermal characteristics. Ensure the ordering code matches the required package variant and compliance standards such as RoHS and WEEE before procurement.

Selection Notes

Select this component for isolated power designs requiring a compact footprint and high-frequency operation. It is suitable for applications needing programmable frequency synchronization and bi-phase mode operation within standard industrial temperature ranges.

Part Context

This part belongs to the SC4808 series of dual-ended PWM controllers from Semtech Corporation. These devices are designed to replace discrete solutions in isolated power conversion architectures, offering integrated protection features and reduced external component count.

Replacement Considerations

SC4808BIMSTRT and SC4808C are listed as similar parts. Verify functional equivalence and pin compatibility before substitution.