TPS2091D Equivalent & Substitute Parts

Part Overview

The TPS2091D is a Power Management IC (PMIC) manufactured by Texas Instruments, functioning as a power switch/driver with 1:1 N-Channel configuration rated for 250mA output current. This device is classified as Obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity. The TPS2091D operates across a 2.7V to 5.5V load voltage range with integrated current limiting, over-temperature protection, and UVLO (Under-Voltage Lock-Out) fault protection in an 8-SOIC surface mount package.

Substiute Parts

TPS2091D

Texas InstrumentsIn Stock: 1191TPS2091D Datasheet

Current PartRFQ

TPS2045AD

Texas InstrumentsIn Stock: 2191TPS2045AD Datasheet

Parametric EquivalentRFQ

TPS2090D

Texas InstrumentsIn Stock: 913TPS2090D Datasheet

MFR RecommendedRFQ

TPS2055AD

Texas InstrumentsIn Stock: 1565TPS2055AD Datasheet

Parametric EquivalentRFQ

TPS2092D

Texas InstrumentsIn Stock: 2565TPS2092D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS2091D is determined by strict alignment across the following critical parameters:

Core Electrical Parameters (Must Match):

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

Functional Variations Permitted:

• Number of Outputs: 1 or 2 (single vs. dual output configurations)
• Input Type: Non-Inverting or Inverting (logic signal interpretation)
• Operating Temperature Range: 0°C ~ 125°C (TJ) or 0°C ~ 85°C (TA) (application-dependent thermal requirements)
• Product Status: Active substitutes preferred for obsolete main part

The substitute parts TPS2092D, TPS2090D, TPS2055AD, and TPS2045AD maintain electrical equivalence across load voltage, output current, on-resistance, and protection mechanisms while offering variations in output channel count and input logic configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TPS2092D

The TPS2092D is the direct functional equivalent to the TPS2091D, maintaining identical electrical specifications including dual output configuration, non-inverting input logic, status flag feature, and extended operating temperature range (0°C ~ 125°C TJ). As an active product with 2,460 units in stock, TPS2092D provides immediate procurement availability and long-term supply continuity. Both devices are ROHS3 compliant with MSL 1 rating.

Secondary Recommendation: TPS2090D

The TPS2090D offers equivalent electrical performance with dual output channels and non-inverting input configuration, matching the TPS2091D's extended temperature range and status flag feature. This active product maintains full electrical compatibility and is suitable for direct replacement in applications requiring the same thermal and functional specifications.

Alternative for Single-Output Applications: TPS2055AD

The TPS2055AD provides electrical equivalence with single output configuration and non-inverting input logic. Operating temperature is limited to 0°C ~ 85°C (TA), making this suitable for applications with reduced thermal requirements. Status flag feature is not included.

Alternative for Inverting Logic Applications: TPS2045AD

The TPS2045AD maintains electrical equivalence with inverting input logic and single output configuration. Operating temperature is limited to 0°C ~ 85°C (TA). This part is appropriate only for designs requiring inverted control signal interpretation.

All substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can TPS2092D directly replace TPS2091D in existing designs?

A: Yes. TPS2092D is electrically equivalent across all critical parameters: N-Channel output type, 2.7V ~ 5.5V load voltage, 250mA maximum output current, 80mOhm on-resistance, high-side output configuration, and identical fault protection mechanisms. Both devices feature dual output channels, non-inverting input logic, and status flag output. Pin-to-pin compatibility in the 8-SOIC package is maintained.

Q: What is the difference between TPS2092D and TPS2090D?

A: Both are electrically equivalent to TPS2091D. TPS2092D and TPS2090D are functionally identical, each providing dual output channels, non-inverting input configuration, status flag feature, and 0°C ~ 125°C operating temperature range. Selection between these two active products may be based on inventory availability or supplier preference.

Q: When should TPS2055AD or TPS2045AD be used instead of TPS2092D?

A: TPS2055AD and TPS2045AD are suitable only when single output channel configuration is required. TPS2055AD maintains non-inverting input logic, while TPS2045AD uses inverting input logic. Both operate across 0°C ~ 85°C temperature range and lack status flag feature. These parts are not direct replacements for dual-output applications.

Q: Does input logic type (inverting vs. non-inverting) affect substitution compatibility?

A: Yes. Input logic type determines control signal interpretation. TPS2091D, TPS2092D, TPS2090D, and TPS2055AD use non-inverting logic, where a high input signal activates the output. TPS2045AD uses inverting logic, where a low input signal activates the output. Substitution with inverted logic requires circuit redesign or signal inversion at the control input.

Q: Are there thermal operating range differences between substitute parts?

A: Yes. TPS2091D, TPS2092D, and TPS2090D operate across 0°C ~ 125°C (TJ), supporting extended thermal applications. TPS2055AD and TPS2045AD operate across 0°C ~ 85°C (TA), suitable for standard industrial temperature ranges. Selection depends on application thermal requirements.

Q: Is the 8-SOIC package identical across all substitute parts?

A: Yes. All parts use 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and footprint compatibility. PCB layout modifications are not required for package-level substitution.

Q: Do all substitute parts meet the same compliance standards as TPS2091D?

A: Yes. All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching TPS2091D compliance profile. No additional handling or storage protocols are required.