TPS2091DRG4 Equivalent & Substitute Parts

Part Overview

The TPS2091DRG4 is a Power Management IC (PMIC) functioning as a power switch/driver with 1:1 N-Channel configuration, rated for 250mA output current in an 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The TPS2091DRG4 provides general-purpose switching with dual outputs, non-inverting input logic, and integrated fault protection including current limiting, over-temperature shutdown, and under-voltage lockout (UVLO).

Substiute Parts

TPS2091DRG4

Texas InstrumentsIn Stock: 838TPS2091DRG4 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 TPS2091DRG4 is determined by the following critical parameters:

Core Electrical Compatibility:

• Output Type: N-Channel
• Voltage - Load: 2.7V ~ 5.5V
• Current - Output (Max): 250mA
• Rds On (Typ): 80mOhm
• Ratio - Input:Output: 1:1
• Output Configuration: High Side
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO
• Package / Case: 8-SOIC (0.154", 3.90mm Width)

Functional Equivalence:

• Switch Type: General Purpose
• Interface: On/Off
• Mounting Type: Surface Mount

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must match all core electrical parameters and package specifications. Variations in number of outputs, input logic type (inverting vs. non-inverting), and operating temperature range are noted as design considerations but do not preclude substitution when electrical load requirements are identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

TPS2090DR and TPS2092DR are the preferred substitutes for the TPS2091DRG4. Both devices maintain identical electrical specifications including dual outputs, non-inverting input logic, status flag functionality, and extended operating temperature range (0°C ~ 125°C). These parts are active products with current manufacturing status and full ROHS3 compliance, ensuring long-term availability and supply chain continuity.

Alternative Substitutes (Design Consideration Required):

TPS2055ADR provides electrical equivalence with non-inverting input logic but features a single output configuration instead of dual outputs. This part is suitable for applications requiring only one switched output channel. Operating temperature is limited to 0°C ~ 85°C, which may restrict use in extended temperature environments.

TPS2045ADR offers electrical equivalence but employs inverting input logic and single output configuration. This part requires logic inversion at the control input and is applicable only to designs where input signal polarity can be accommodated. Operating temperature is limited to 0°C ~ 85°C.

Compliance & Availability:

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols. Current product status of all substitutes guarantees ongoing availability and support from Texas Instruments.

Frequently Asked Questions (FAQ)

Q: Can TPS2045ADR replace TPS2091DRG4 directly?

A: TPS2045ADR is electrically equivalent in load voltage, output current, and on-resistance but differs in two aspects: it features inverting input logic (versus non-inverting on the TPS2091DRG4) and provides a single output instead of dual outputs. Direct replacement requires circuit modification to accommodate input signal inversion and may not be suitable if dual output switching is required.

Q: What is the difference between TPS2090DR and TPS2092DR?

A: Both TPS2090DR and TPS2092DR are functionally identical to the TPS2091DRG4 in all electrical parameters, package, and operating temperature range. The primary difference is packaging format: TPS2090DR is supplied in Tape & Reel (TR), while TPS2092DR is also supplied in Tape & Reel (TR). Both are active products suitable for direct substitution.

Q: Why does TPS2055ADR have a lower operating temperature maximum?

A: TPS2055ADR specifies operating temperature as 0°C ~ 85°C (TA - ambient), whereas TPS2091DRG4 specifies 0°C ~ 125°C (TJ - junction). This difference reflects the device characterization methodology. For applications requiring operation above 85°C ambient, TPS2090DR or TPS2092DR are recommended.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All substitute parts (TPS2045ADR, TPS2055ADR, TPS2090DR, TPS2092DR) are packaged in 8-SOIC (0.154", 3.90mm Width), ensuring mechanical and electrical compatibility with existing PCB layouts designed for the TPS2091DRG4.

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

A: The Status Flag feature, present on TPS2091DRG4, TPS2090DR, and TPS2092DR, provides output status indication. TPS2045ADR and TPS2055ADR do not include this feature. If status monitoring is required in the application, select TPS2090DR or TPS2092DR.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All substitute parts (TPS2045ADR, TPS2055ADR, TPS2090DR, TPS2092DR) are ROHS3 compliant with MSL 1 rating, meeting standard environmental and manufacturing requirements.