SC441ATETRT

Overview

The SC441ATETRT is an automotive-grade LED driver IC from Semtech, designed for regulated dimming applications. It features a boost topology with four independent output channels, each capable of delivering up to 150mA. The device operates within a supply voltage range of 4.5V to 21V and supports output voltages up to 36V. It integrates internal switches and functions at a switching frequency of 700kHz. The component supports both analog and PWM dimming methods, making it suitable for backlighting systems. It is housed in a 20-TSSOP package with an exposed pad.

Feature Summary

• Supports regulated dimming for precise LED control
• Integrates four independent constant current output channels
• Includes internal power switches for simplified design
• Compatible with analog and PWM dimming signals

Applications

• Automotive LCD backlighting systems
• High-brightness LED illumination circuits
• Multi-zone display backlight drivers

Procurement Notes

Verify the specific suffix 'A' indicates automotive qualification and AEC-Q100 compliance. Confirm the 'TRT' suffix denotes cut tape packaging rather than reel quantities if single-unit procurement is required. Check for last-time-buy status as indicated by distributor data. Ensure the 20-TSSOP-EP footprint matches the PCB layout requirements before ordering.

Selection Notes

Select this component when designing multi-channel LED backlights requiring individual channel control. It is appropriate for applications needing boost topology to drive series-connected LEDs from lower supply voltages. Consider the 700kHz frequency for balancing efficiency and EMI performance. Verify that the input voltage range covers the system's operational battery or rail conditions.

Part Context

This part belongs to Semtech's automotive LED driver family, specifically engineered for reliability in vehicle environments. It complements other Semtech PMIC solutions by providing dedicated lighting control capabilities. The device is distinct from general-purpose regulators due to its integrated dimming interfaces and multi-channel current regulation features tailored for display technologies.

Replacement Considerations

Consult official cross-reference tools for parametrically similar parts. Verify pin compatibility and thermal characteristics when substituting. Ensure any alternative maintains the same automotive grade certification and output channel count.