TPS2091DR Equivalent & Substitute Parts

Part Overview

The TPS2091DR is a Power Management Integrated Circuit (PMIC) manufactured by Texas Instruments, classified as a Power Switch/Driver with 1:1 N-Channel configuration. This component functions as a high-side N-channel power switch rated for 250mA output current in an 8-SOIC surface mount package. The TPS2091DR is currently listed as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage ratings, current capacity, output configuration, and fault protection mechanisms while accommodating packaging and operational temperature variations.

Substiute Parts

TPS2091DR

Texas InstrumentsIn Stock: 2232TPS2091DR Datasheet

Current PartRFQ

TPS2045ADR

Texas InstrumentsIn Stock: 4345TPS2045ADR Datasheet

Parametric EquivalentRFQ

TPS2055ADR

Texas InstrumentsIn Stock: 5670TPS2055ADR Datasheet

Parametric EquivalentRFQ

TPS2090DR

Texas InstrumentsIn Stock: 2522TPS2090DR Datasheet

Parametric EquivalentRFQ

TPS2092DR

Texas InstrumentsIn Stock: 738TPS2092DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS2091DR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Output Configuration: High Side
• Output Type: N-Channel
• Voltage - Load: 2.7V ~ 5.5V
• Current - Output (Max): 250mA
• Rds On (Typ): 80mOhm
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Allowable Variations:

• Number of Outputs: 1 or 2 (functional variation)
• Input Type: Non-Inverting or Inverting (functional variation)
• Operating Temperature Range: 0°C ~ 85°C (TA) or 0°C ~ 125°C (TJ) (operational variation)
• Product Status: Active or Obsolete (availability variation)
• Features: Status Flag presence (functional enhancement)

All substitute parts listed maintain identical electrical performance specifications and package compatibility with the TPS2091DR while offering active product status for continued procurement.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

TPS2090DR and TPS2092DR are the preferred substitutes for TPS2091DR applications. Both parts maintain identical electrical specifications, output configuration (2 outputs), Status Flag feature, and extended operating temperature range (0°C ~ 125°C TJ). Both are currently in active product status with established supply chains. TPS2090DR offers 2480 units in stock, while TPS2092DR provides 688 units in stock.

Secondary Substitutes (Functional Equivalents):

TPS2055ADR is a functional equivalent with identical electrical performance and non-inverting input configuration matching the TPS2091DR. This part operates within the 0°C ~ 85°C (TA) temperature range and features single output configuration. TPS2055ADR is active status with 5628 units in stock.

Alternative Substitute (Input Logic Variation):

TPS2045ADR provides electrical equivalence with inverting input logic, differing from the TPS2091DR non-inverting configuration. This part operates within 0°C ~ 85°C (TA) range with single output. TPS2045ADR is active status with 4269 units in stock. Selection requires circuit-level input logic compatibility verification.

All substitute parts maintain ROHS3 compliance and identical package geometry, enabling direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can TPS2090DR directly replace TPS2091DR in existing designs?

A: Yes. TPS2090DR maintains identical electrical specifications including 250mA output current, 80mOhm Rds On, 2.7V ~ 5.5V load voltage range, and identical fault protection mechanisms. Both feature 2 outputs and Status Flag functionality. The 8-SOIC package geometry is identical, enabling direct PCB substitution. Operating temperature range extends to 0°C ~ 125°C (TJ), matching the TPS2091DR specification.

Q: What is the difference between TPS2090DR and TPS2092DR?

A: Both parts are electrically identical with 2 outputs, Status Flag features, and 0°C ~ 125°C (TJ) operating range. The primary distinction is inventory availability: TPS2090DR has 2480 units in stock, while TPS2092DR has 688 units in stock. Both are active status products suitable for new designs.

Q: Why does TPS2045ADR have different input logic?

A: TPS2045ADR features inverting input logic compared to the TPS2091DR non-inverting configuration. This functional difference requires circuit-level verification to ensure compatibility with existing control signal logic. Electrical performance specifications remain identical.

Q: Can TPS2055ADR be used in applications requiring extended temperature operation?

A: TPS2055ADR operates within 0°C ~ 85°C (TA) range, which is narrower than the TPS2091DR specification of 0°C ~ 125°C (TJ). Applications requiring extended high-temperature operation should prioritize TPS2090DR or TPS2092DR, which maintain the full 0°C ~ 125°C (TJ) range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TPS2045ADR, TPS2055ADR, TPS2090DR, TPS2092DR) maintain ROHS3 compliance identical to the TPS2091DR, ensuring regulatory compatibility for current manufacturing standards.

Q: What is the significance of the Status Flag feature?

A: The Status Flag feature is present in TPS2091DR, TPS2090DR, and TPS2092DR. This feature provides output status indication. TPS2045ADR and TPS2055ADR do not include this feature. Applications requiring status monitoring should select parts with Status Flag functionality.

Q: Are the 8-SOIC packages identical across all parts?

A: Yes. All parts use 8-SOIC (0.154", 3.90mm Width) surface mount packages with identical footprint geometry, enabling direct PCB layout compatibility without redesign.