MSL1061AV-R Equivalent & Substitute Parts

Part Overview

The MSL1061AV-R is a LED Driver IC with integrated DC-DC regulator (Step-Up/Boost topology) manufactured by Microchip Technology. This device provides 6 output channels with 30mA per-channel current capability, PWM and analog dimming support, and operates across a 4.75V to 36V supply range with 48V output capability. The MSL1061AV-R is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support.

Substiute Parts

MSL1061AV-R

Microchip TechnologyIn Stock: 1192MSL1061AV-R Datasheet

Current PartRFQ

LP8552TLX-E04/NOPB

Texas InstrumentsIn Stock: 38319LP8552TLX-E04/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSL1061AV-R is determined by the following critical parameters:

• Topology: Step-Up (Boost) DC-DC regulator with internal switching capability
• Output Configuration: 6 independent output channels
• Dimming Support: PWM capability (primary requirement for backlight applications)
• Operating Temperature Range: -40°C to 85°C
• Compliance: ROHS3 and REACH compliance status
• Package Compatibility: Surface mount technology with exposed pad design

The LP8552TLX-E04/NOPB from Texas Instruments qualifies as a manufacturer-recommended substitute. Both devices share the same functional topology (Step-Up boost regulator), 6-output architecture, PWM dimming capability, and identical operating temperature range. Both maintain ROHS3 and REACH compliance. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The LP8552TLX-E04/NOPB is the manufacturer-recommended substitute for the obsolete MSL1061AV-R. Selection of this alternative is justified by:

• Active Product Status: The LP8552TLX-E04/NOPB maintains active production status, ensuring sustained availability and supply chain reliability compared to the obsolete MSL1061AV-R.
• Regulatory Compliance: Both devices maintain identical ROHS3 and REACH compliance certifications, satisfying regulatory requirements without modification.
• Functional Equivalence: Both devices implement identical Step-Up boost topology with 6-output architecture and PWM dimming capability, supporting the same backlight application class.
• Operating Temperature Alignment: Identical -40°C to 85°C operating range ensures thermal compatibility in existing designs.
• Improved Moisture Handling: The LP8552TLX-E04/NOPB features MSL 1 rating (unlimited moisture exposure) compared to MSL 3, reducing moisture-related handling and storage constraints.

Design considerations include package transition from 28-WFQFN to 25-WFBGA/DSBGA, which requires PCB layout modification. The substitute part delivers significantly higher per-channel current capability (450mA versus 30mA), providing design margin for higher-brightness applications. Supply voltage range differences (2.7V to 22V versus 4.75V to 36V) and output voltage difference (40V versus 48V) require circuit validation in applications operating at the extremes of the original specification.

Frequently Asked Questions (FAQ)

Q: Can the LP8552TLX-E04/NOPB directly replace the MSL1061AV-R without PCB modification?

A: No. The devices use different package types (28-WFQFN versus 25-WFBGA/DSBGA), requiring PCB layout redesign. Pin-to-pin compatibility cannot be assumed and must be verified against detailed datasheets.

Q: What are the key electrical differences between these parts?

A: The LP8552TLX-E04/NOPB operates across a narrower supply voltage range (2.7V to 22V versus 4.75V to 36V) and produces a lower maximum output voltage (40V versus 48V). Per-channel current capability is significantly higher (450mA versus 30mA). Applications requiring the full 36V input or 48V output specification of the MSL1061AV-R may not be compatible with the substitute.

Q: Are there compliance or certification differences?

A: Both parts maintain ROHS3 and REACH compliance. The LP8552TLX-E04/NOPB features superior moisture sensitivity rating (MSL 1 unlimited versus MSL 3 168-hour), reducing handling and storage constraints.

Q: Why is the MSL1061AV-R classified as obsolete?

A: Microchip Technology has discontinued this product line. The LP8552TLX-E04/NOPB from Texas Instruments represents the active equivalent for new designs and production continuity.

Q: Does the substitute support both analog and PWM dimming?

A: The LP8552TLX-E04/NOPB supports PWM dimming only. The original MSL1061AV-R supports both analog and PWM dimming. Applications requiring analog dimming capability must retain the original part or identify alternative solutions.

Q: What is the impact of higher per-channel current on thermal design?

A: The LP8552TLX-E04/NOPB's 450mA per-channel capability (versus 30mA) enables higher brightness output but increases power dissipation. Thermal analysis and potentially enhanced cooling provisions may be required depending on application duty cycle and ambient conditions.