MSL2042GU LED Driver IC Equivalent & Substitute Parts

Part Overview

The MSL2042GU is a linear PWM LED driver IC manufactured by Microchip Technology, designed for 4-output lighting applications. This device operates within a supply voltage range of 10.8V to 13.2V and delivers 9.6V output with PWM dimming capability in a 32-SOP package. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

MSL2042GU

Microchip TechnologyIn Stock: 1206MSL2042GU Datasheet

Current PartRFQ

TPS75100YFFR

Texas InstrumentsIn Stock: 6494TPS75100YFFR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSL2042GU requires evaluation based on the following critical parameters:

Functional Compatibility Criteria:

• 4-output LED driver topology
• PWM dimming control capability
• Linear driver architecture
• Surface mount technology

Electrical Compatibility Criteria:

• Supply voltage range compatibility or overlap
• Output voltage specifications
• Operating temperature range (-40°C ~ 85°C minimum)
• Current handling per output channel

Regulatory & Environmental Criteria:

• ROHS3 compliance
• REACH compliance status
• Operating temperature specifications

The TPS75100YFFR from Texas Instruments is identified as a functionally equivalent substitute. While this device operates at a lower supply voltage range (2.7V to 5.5V) and different output specifications, it maintains the core 4-output linear PWM LED driver architecture with identical dimming control methodology and temperature operating range. Both devices are ROHS3 compliant and REACH unaffected, ensuring regulatory equivalence for applications where voltage specifications can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

Selection between MSL2042GU and TPS75100YFFR must be based on application-specific voltage requirements and current demands:

MSL2042GU Selection Criteria:

• Applications requiring 10.8V to 13.2V supply voltage range
• Legacy designs with existing component qualification
• Note: Product is obsolete; new inventory procurement may be limited

TPS75100YFFR Selection Criteria:

• Applications operating within 2.7V to 5.5V supply voltage range
• New designs requiring active product status and ongoing manufacturer support
• Backlight and low-voltage lighting applications with 25mA per-channel current requirements
• Designs prioritizing lower MSL rating (MSL 1 vs. MSL 3)

Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence within their respective voltage operating ranges.

Frequently Asked Questions (FAQ)

Q: Can TPS75100YFFR directly replace MSL2042GU in existing designs?

A: Direct replacement is not possible due to incompatible supply voltage ranges. MSL2042GU operates at 10.8V–13.2V, while TPS75100YFFR operates at 2.7V–5.5V. Circuit redesign is required if substitution is necessary.

Q: What are the key functional similarities between these devices?

A: Both are 4-output linear LED drivers with PWM dimming control, identical operating temperature ranges (-40°C to 85°C), surface mount packaging, and ROHS3/REACH compliance.

Q: Why is MSL2042GU classified as obsolete?

A: Product status reflects manufacturer discontinuation. TPS75100YFFR maintains active status with ongoing manufacturer support.

Q: Are there package compatibility considerations?

A: MSL2042GU uses 32-SOIC packaging (0.295", 7.50mm width), while TPS75100YFFR uses 9-UFBGA/DSBGA packaging. These are not pin-compatible and require PCB redesign.

Q: What is the significance of MSL rating differences?

A: MSL2042GU has MSL 3 (168-hour floor life), while TPS75100YFFR has MSL 1 (unlimited floor life). Lower MSL ratings provide greater handling flexibility during manufacturing and storage.

Q: Are both devices suitable for lighting applications?

A: MSL2042GU is specified for general lighting. TPS75100YFFR is specified for backlight applications. Both use PWM dimming control suitable for LED driver functions within their respective voltage ranges.