BQ2085DBTR Battery Monitor IC - Equivalent & Substitute Parts

Part Overview

The BQ2085DBTR is a battery gas gauge IC designed for lithium ion/polymer battery monitoring applications, specifically engineered for use with the BQ29311 protection IC. This Surface Mount device operates across the -20°C to 85°C temperature range and communicates via SMBus interface. The BQ2085DBTR is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity.

Substiute Parts

BQ2085DBTR

Texas InstrumentsIn Stock: 3279BQ2085DBTR Datasheet

Current PartRFQ

BQ2083DBTR-V1P3

Texas InstrumentsIn Stock: 15411BQ2083DBTR-V1P3 Datasheet

Parametric EquivalentRFQ

BQ2085DBTR-V1P3

Texas InstrumentsIn Stock: 16986BQ2085DBTR-V1P3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the BQ2085DBTR is determined by strict alignment of the following critical parameters:

• Function: Battery Monitor for lithium ion/polymer chemistry
• Interface Protocol: SMBus communication standard
• Operating Temperature Range: -20°C ~ 85°C (TA)
• Package Type: 38-TFSOP (0.173", 4.40mm Width) / 38-TSSOP
• Mounting Configuration: Surface Mount
• Compliance Standards: ROHS3 Compliant, REACH Unaffected
• Moisture Sensitivity: MSL 2 (1 Year)

The substitute parts identified below maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

Both BQ2083DBTR-V1P3 and BQ2085DBTR-V1P3 are direct parametric equivalents to the obsolete BQ2085DBTR. Selection between these substitutes is based on the following engineering criteria:

BQ2085DBTR-V1P3 maintains the identical base product number (BQ2085) and is the direct active replacement. This part carries active product status with 16930 units in stock and is supplied in Tape & Reel format, suitable for automated assembly processes. ROHS3 compliance and REACH unaffected status are maintained.

BQ2083DBTR-V1P3 represents an alternative from the BQ2083 base product line with equivalent electrical and mechanical specifications. This part is also active with 15350 units available in Tape & Reel packaging and meets identical compliance requirements.

Both parts satisfy all electrical parameters, thermal operating range, package dimensions, and regulatory compliance standards required for direct substitution in lithium ion/polymer battery monitoring applications.

Frequently Asked Questions (FAQ)

Q: Can BQ2083DBTR-V1P3 be used as a direct replacement for BQ2085DBTR?

A: Yes. Both parts share identical electrical specifications, SMBus interface, operating temperature range (-20°C to 85°C), and 38-TFSOP package dimensions. The primary difference is the base product number (BQ2083 versus BQ2085), but parametric equivalence is confirmed across all critical parameters.

Q: What is the difference between the bulk packaging of BQ2085DBTR and the Tape & Reel format of the substitute parts?

A: The original BQ2085DBTR is supplied in bulk packaging, while BQ2083DBTR-V1P3 and BQ2085DBTR-V1P3 are supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated surface mount assembly and provides improved handling and placement accuracy. The electrical and mechanical specifications remain identical.

Q: Are there any compliance or regulatory differences between these parts?

A: No. All three parts maintain ROHS3 compliance, REACH unaffected status, and identical Moisture Sensitivity Level (MSL 2, 1 Year). Regulatory and environmental compliance is equivalent across all variants.

Q: Why is the BQ2085DBTR classified as obsolete?

A: The BQ2085DBTR has reached end-of-life status. The active variants BQ2085DBTR-V1P3 and BQ2083DBTR-V1P3 represent the current production alternatives with improved availability and active manufacturer support.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All three parts use the identical 38-TFSOP package with matching pin configuration and spacing (0.173", 4.40mm width). PCB footprints and assembly processes require no modification for substitution.

Q: What is the SMBus interface and why is it critical for substitution?

A: SMBus (System Management Bus) is the communication protocol used by these battery monitor ICs to transmit fuel gauge data to the host system. All substitute parts maintain identical SMBus protocol compatibility, ensuring seamless integration with existing firmware and system designs.