LT3085MPMS8E#TR Equivalent & Substitute Parts

Part Overview

The LT3085MPMS8E#TR is a linear voltage regulator IC from Analog Devices Inc. designed for positive adjustable output applications. This device delivers 500mA output current with a maximum input voltage of 36V and adjustable output voltage ranging from 0V to 36V. The regulator integrates over-current, over-temperature, and short-circuit protection features, operating across the industrial temperature range of -55°C to 125°C.

The LT3085MPMS8E#TR carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and improved specifications where applicable.

Substiute Parts

LT3085MPMS8E#TR

Analog Devices Inc.In Stock: 1028LT3085MPMS8E#TR Datasheet

Current PartRFQ

LT3085MPMS8E#TRPBF

Analog Devices Inc.In Stock: 3239LT3085MPMS8E#TRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LT3085MPMS8E#TR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Analog Devices Inc.
• Base Product Number: LT3085
• Package Type: 8-MSOP-EP
• Output Configuration: Positive Adjustable
• Output Current: 500mA
• Input Voltage (Max): 36V
• Output Voltage Range: 0V to 36V
• Operating Temperature Range: -55°C to 125°C
• Protection Features: Over Current, Over Temperature, Short Circuit
• Mounting Type: Surface Mount

The substitute part LT3085MPMS8E#TRPBF maintains identical electrical and mechanical specifications while offering improved product status and enhanced performance characteristics. Both parts share the same base product number and package designation, ensuring direct functional compatibility in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The LT3085MPMS8E#TRPBF is the direct substitute for the obsolete LT3085MPMS8E#TR. Both devices are manufactured by Analog Devices Inc. and share identical package, pinout, and core electrical specifications.

Selection Basis:

The LT3085MPMS8E#TRPBF offers active product status with full manufacturing support, ensuring long-term availability and supply chain continuity. This substitute incorporates ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic components in regulated markets.

The substitute part demonstrates improved voltage dropout performance (0.45V versus 1.6V at 500mA), resulting in reduced power dissipation and enhanced thermal efficiency in applications operating near maximum output current.

Both parts maintain identical quiescent current, supply current, PSRR characteristics, and protection feature sets. The 8-MSOP-EP package with exposed pad remains consistent, ensuring direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the LT3085MPMS8E#TRPBF be used as a direct replacement for the LT3085MPMS8E#TR?

A: Yes. Both parts share identical package designation (8-MSOP-EP), pinout configuration, output current rating (500mA), voltage specifications (0V to 36V adjustable output, 36V maximum input), and operating temperature range (-55°C to 125°C). The substitute part is functionally equivalent for all circuit applications.

Q: What is the primary difference between these two parts?

A: The LT3085MPMS8E#TR is obsolete, while the LT3085MPMS8E#TRPBF maintains active product status. The substitute offers improved voltage dropout (0.45V versus 1.6V at 500mA), ROHS3 compliance, and REACH unaffected certification. Electrical performance characteristics including quiescent current, PSRR, and protection features remain identical.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both parts use the identical 8-MSOP-EP package with 0.118" width and 3.00mm body dimension. PCB footprints, pad layouts, and thermal via patterns require no modification.

Q: Does the improved dropout voltage of the substitute part affect circuit design?

A: The lower dropout voltage (0.45V versus 1.6V) of the LT3085MPMS8E#TRPBF reduces power dissipation and heat generation. Existing designs will operate with improved thermal performance. No circuit redesign is required.

Q: What regulatory certifications apply to the substitute part?

A: The LT3085MPMS8E#TRPBF is ROHS3 compliant and REACH unaffected. Both parts carry MSL rating of 1 (Unlimited) and EAR99 export classification.

Q: Is the substitute part available in higher quantities?

A: The LT3085MPMS8E#TRPBF maintains active manufacturing status with 3200 pieces in stock, compared to 965 pieces for the obsolete variant. Active status ensures continued availability for production requirements.