SC621ULTRT

Overview

The SC621ULTRT is a high-efficiency LED lighting driver IC from Semtech's SC6 series, utilizing a charge pump topology. It features five independent output channels capable of delivering up to 500 mA per channel. The device operates within an input voltage range of 3 V to 5.5 V and functions at a switching frequency of 250 kHz. It is housed in a compact MLPQ-UT-20 package (SMD/SMT) with a maximum supply current of 5.85 mA. The component supports serial data input and is designed for applications requiring efficient multi-channel LED control.

Feature Summary

• Five independent output channels for flexible LED configuration
• Charge pump topology for efficient voltage regulation
• Low quiescent current consumption for power efficiency
• Compact ultra-thin surface-mount packaging

Applications

• LED backlighting systems
• Portable electronic display illumination
• General LED lighting drivers

Procurement Notes

Verify availability directly with the manufacturer or authorized distributors as stock status may vary. Confirm that the ordering suffix matches the required reel quantity specifications. Ensure compatibility with the target PCB footprint for the MLPQ-UT-20 package. Check RoHS compliance documentation for regulatory requirements. Validate electrical parameters against specific application load conditions before finalizing procurement.

Selection Notes

Select this component when a multi-channel LED driver with moderate current capability is required. The 500 mA output rating suits standard LED strings. Consider the 3 V to 5.5 V input range for battery-powered or low-voltage systems. The serial interface simplifies control logic integration. Evaluate thermal performance within the small package for dense designs.

Part Context

Part of the SC6 series of LED drivers from Semtech, focusing on high efficiency and compact form factors. This model specifically addresses applications needing multiple controlled outputs from a single chip. It complements other Semtech solutions for power management and signal integrity in consumer electronics and IoT devices.

Replacement Considerations

The SC627AULTRT is a confirmed substitute offering similar functionality but with an increased output current of 800 mA per channel. Both share the same MLPQ-UT-20 package and charge pump topology. Verify if the higher current capacity of the SC627AULTRT fits the design constraints or if the 500 mA limit of the SC621ULTRT is sufficient.