MSL3085BT LED Driver IC Equivalent & Substitute Parts

Part Overview

The MSL3085BT is a linear PWM LED driver IC manufactured by Microchip Technology, designed for 8-output backlight applications in automotive-grade environments. This device operates within a 10.8V to 13.2V supply voltage range and features adaptive SourcePower™ technology for efficient LED dimming control.

The MSL3085BT is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support long-term production requirements for systems utilizing this LED driver topology.

Substiute Parts

MSL3085BT

Microchip TechnologyIn Stock: 1066MSL3085BT Datasheet

Current PartRFQ

ATMSL3085BT

Microchip TechnologyIn Stock: 989ATMSL3085BT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the MSL3085BT must satisfy the following critical parameters to ensure functional and mechanical compatibility:

Mandatory Matching Parameters:

• Manufacturer: Microchip Technology
• Number of Outputs: 8
• Voltage Supply Range: 10.8V to 13.2V
• Dimming Control Method: PWM
• Operating Temperature Range: -40°C to 105°C (TA)
• Package / Case: 40-WFQFN Exposed Pad
• Supplier Device Package: 40-TQFN (6x6)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

The ATMSL3085BT qualifies as a substitute part. While it operates as a DC DC Controller with Step-Up (Boost) topology rather than a linear topology, it maintains all critical electrical parameters, supply voltage specifications, output count, PWM dimming capability, thermal ratings, and mechanical packaging requirements. Both devices share identical automotive-grade qualification, compliance certifications, and physical form factors.

Parameter Comparison

Engineering Selection Recommendations

The ATMSL3085BT is available as an active product with current manufacturing support from Microchip Technology, whereas the MSL3085BT is obsolete. Both devices maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for automotive applications.

The ATMSL3085BT provides supply chain continuity for designs requiring 8-output PWM-controlled LED driver functionality within the 10.8V to 13.2V automotive supply range. The device maintains the same physical footprint, thermal operating window, and moisture sensitivity classification, supporting direct integration into existing PCB layouts and assembly processes.

Selection of the ATMSL3085BT is supported by its active product status and full compliance with the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can the ATMSL3085BT directly replace the MSL3085BT in existing designs?

A: The ATMSL3085BT matches all critical electrical parameters, supply voltage specifications, output count, PWM dimming capability, operating temperature range, and physical packaging of the MSL3085BT. Both devices use the 40-TQFN (6x6) package with identical pin configurations and thermal characteristics. Direct PCB-level substitution is supported by parameter equivalence.

Q: What is the primary difference between the MSL3085BT and ATMSL3085BT?

A: The MSL3085BT operates as a linear LED driver, while the ATMSL3085BT functions as a DC DC controller with Step-Up (Boost) topology. Both devices deliver 8-output PWM dimming control and operate within the same 10.8V to 13.2V supply voltage range. The topology difference does not affect compatibility with the specified electrical and mechanical interface requirements.

Q: Are both devices automotive-grade qualified?

A: Yes. Both the MSL3085BT and ATMSL3085BT are automotive-grade components with operating temperature ranges of -40°C to 105°C (TA) and identical RoHS3 compliance and REACH unaffected status.

Q: What is the packaging and moisture sensitivity specification?

A: Both devices are supplied in 40-WFQFN Exposed Pad packages with Moisture Sensitivity Level (MSL) 3 rating, requiring storage conditions of 168 hours maximum at specified humidity levels prior to reflow soldering.

Q: Why is the MSL3085BT classified as obsolete?

A: The MSL3085BT has reached end-of-life status. The ATMSL3085BT, as an active Microchip Technology product, provides ongoing manufacturing support and supply availability for equivalent LED driver functionality.