SC2442ITSTRT

Overview

The SC2442ITSTRT is a high-performance dual synchronous buck controller from Semtech, designed for applications requiring high efficiency. It features two independent output channels with out-of-phase operation to minimize input current ripple. The device supports a wide input voltage range of 4.75 V to 30 V and allows programmable switching frequencies up to 1.1 MHz. It includes integrated power-up sequencing, over-current protection, and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Dual synchronous buck converter controllers configured for high-efficiency point-of-load applications
• Out-of-phase operation reduces input ripple and allows for fewer input capacitors
• Integrated power-up sequencing prevents latch-ups during startup
• Programmable clock frequency synchronization capability

Applications

• Point of load converter applications
• DSL systems with multiple output voltages
• Power management for mixed signal applications
• Cable modems and set top boxes

Procurement Notes

Verify the specific suffix ITSTRT against the manufacturer's latest documentation to confirm package type and temperature grade. Confirm RoHS compliance status as required by your assembly specifications. Ensure the ordering quantity aligns with the standard tape and reel packaging requirements specified in the official datasheet.

Selection Notes

Select this component when designing dual-output synchronous buck converters requiring phase interleaving to reduce input capacitance. It is suitable for mixed-signal environments where power-up sequencing is critical to prevent system latch-ups. Consider the TSSOP-24 package constraints and the 4.75 V to 30 V input range compatibility with your system rails.

Part Context

This part belongs to the SC24 series of power management ICs from Semtech. It is specifically engineered as a dual buck controller, distinct from single-channel regulators or integrated switch solutions. The device focuses on control logic and gate driving for external MOSFETs rather than containing internal power switches.

Replacement Considerations

Public confirmed substitute: TPS43351QDAPRQ1 (Texas Instruments). Verify pinout compatibility and electrical parameter alignment before substitution.