MSL1061AV-R

Overview

The MSL1061AV-R is a six-channel LED driver IC manufactured by Microchip Technology, designed for digital LED lighting applications. It features an integrated current-mode PWM boost regulator with a 48V internal switch and operates within a wide input voltage range of 4.75 V to 36 V. The device supports a switching frequency of 1.1 MHz, enabling the use of small-sized inductors and output capacitors while maintaining high efficiency and low ripple. Packaged in a 28-lead QFN (5x5 mm) format, it provides analog and PWM dimming capabilities with a maximum supply current of 30 mA.

Feature Summary

• Integrates a current-mode PWM boost regulator with a 48V internal switch for efficient step-up conversion
• Supports six independent output channels for multi-string LED driving configurations
• Enables compact design through 1.1 MHz switching frequency allowing smaller passive components
• Provides flexible dimming control via combined analog and PWM input interfaces

Applications

• Digital LED lighting systems requiring multi-string regulation
• Automotive interior or exterior lighting modules
• General solid-state lighting fixtures utilizing boost topology
• Backlighting drivers for displays requiring multiple LED strings

Procurement Notes

Verify component authenticity as the MSL1061AV-R may be listed as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors or spot trade sources if standard channels are inactive. Ensure the specific suffix matches required packaging options such as reel or cut tape. Validate RoHS compliance status against current regulatory requirements before integration into production designs.

Selection Notes

Select this component when designing circuits requiring six isolated LED strings driven from a single boost converter. The 4.75 V to 36 V input range suits battery-powered or automotive bus architectures. Consider the 28-TQFN package for space-constrained PCB layouts. Evaluate thermal performance given the 85°C maximum operating temperature limit. Ensure compatibility with available PWM dimming signals from the host controller.

Part Context

This part belongs to the MSL106x series of LED drivers from Microchip Technology, which includes variants like the MSL1060 and MSL1064. These devices share similar boost regulator architectures but differ in channel counts and specific electrical ratings. The series targets high-efficiency lighting applications where size reduction and precise current regulation are critical design parameters.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly documented in the provided source material. Verify cross-references with Microchip directly or consult distributor substitution guides for equivalent six-channel boost LED drivers with compatible voltage and pinout specifications.