TPS2020D Equivalent & Substitute Parts

Part Overview

The TPS2020D is an active power switch IC manufactured by Texas Instruments, designed for general-purpose high-side switching applications. This N-channel power switch operates across a 2.7V to 5.5V load voltage range with a maximum output current of 200mA and an on-resistance of 33mOhm typical. The device is housed in an 8-SOIC surface mount package and includes integrated status flag output, current limiting, over-temperature protection, and under-voltage lockout (UVLO) functionality. The TPS2020D maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

TPS2020D

Texas InstrumentsIn Stock: 2811TPS2020D Datasheet

Current PartRFQ

AP2141SG-13

Diodes IncorporatedIn Stock: 7394AP2141SG-13 Datasheet

MFR RecommendedRFQ

AP2161SG-13

Diodes IncorporatedIn Stock: 31559AP2161SG-13 Datasheet

MFR RecommendedRFQ

AP2181SG-13

Diodes IncorporatedIn Stock: 17021AP2181SG-13 Datasheet

MFR RecommendedRFQ

TPS2030D

Texas InstrumentsIn Stock: 1691TPS2030D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS2020D are classified into two categories based on substitution criteria:

Manufacturer-Recommended Substitutes (MFR Recommended): AP2141SG-13, AP2161SG-13, and AP2181SG-13 from Diodes Incorporated. These parts share the core functional parameters of the TPS2020D: 1:1 input-to-output ratio, high-side output configuration, on/off interface, identical load voltage range (2.7V ~ 5.5V), surface mount technology, and equivalent package dimensions (8-SOIC, 0.154" width). All three maintain RoHS3 compliance and unlimited MSL rating. Substitution is valid where the higher output current capability (500mA to 1.5A versus 200mA) and P-channel topology do not conflict with circuit design requirements.

Parametric Equivalent: TPS2030D from Texas Instruments. This part is functionally equivalent to the TPS2020D with identical electrical specifications: N-channel output type, 200mA maximum output current, 33mOhm on-resistance, 1:1 ratio, high-side configuration, identical load voltage range, and matching package. The primary difference is input type (non-inverting versus inverting), which must be evaluated for circuit compatibility.

Substitution logic is based strictly on: output type (N-channel or P-channel), output current rating (equal or higher), load voltage compatibility (2.7V ~ 5.5V), package form factor (8-SOIC), and fault protection feature set (current limiting, over-temperature, UVLO).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, ensuring long-term availability and regulatory alignment with the TPS2020D.

For N-Channel topology requirement: TPS2030D is the direct parametric equivalent, offering identical output type, current rating, and on-resistance. This part is suitable for direct substitution where input type compatibility (non-inverting) is confirmed in the circuit design.

For P-Channel topology with higher current capability: AP2141SG-13 (500mA), AP2161SG-13 (1A), and AP2181SG-13 (1.5A) are suitable where circuit design accommodates P-channel switching and the higher output current does not introduce thermal or layout constraints. These parts include reverse current protection in addition to the standard fault protection set. Operating temperature range is reduced to -40°C to 85°C (ambient), which must be evaluated against application requirements.

For thermal or extended temperature applications: TPS2030D maintains the full -40°C to 125°C junction temperature range of the TPS2020D, making it preferable for high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can AP2141SG-13, AP2161SG-13, or AP2181SG-13 be used as direct drop-in replacements for TPS2020D?

A: These Diodes Incorporated parts share the same load voltage range, package form factor, and high-side output configuration. However, they use P-channel topology versus the N-channel of the TPS2020D. Direct substitution requires circuit design compatibility with P-channel switching logic and input signal polarity. Higher output current ratings (500mA to 1.5A) do not prevent substitution but must not introduce unintended circuit behavior.

Q: What is the difference between TPS2020D and TPS2030D?

A: Both parts are N-channel high-side switches from Texas Instruments with identical electrical specifications: 200mA output current, 33mOhm on-resistance, 2.7V to 5.5V load voltage, and -40°C to 125°C operating range. The primary difference is input type: TPS2020D uses inverting input logic, while TPS2030D uses non-inverting input logic. Circuit design must accommodate this difference.

Q: Are the Diodes Incorporated parts suitable for applications requiring -40°C to 125°C operation?

A: No. AP2141SG-13, AP2161SG-13, and AP2181SG-13 are rated for -40°C to 85°C ambient temperature operation, which is lower than the TPS2020D and TPS2030D junction temperature range of -40°C to 125°C. For extended temperature applications, TPS2030D is the appropriate choice.

Q: Do all substitute parts support the same fault protection features?

A: TPS2020D and TPS2030D include current limiting, over-temperature protection, and UVLO. The Diodes Incorporated parts (AP2141SG-13, AP2161SG-13, AP2181SG-13) include these features plus reverse current protection, providing additional circuit safeguarding.

Q: Is package compatibility guaranteed across all listed parts?

A: Yes. All parts use the 8-SOIC package with 0.154" (3.90mm) width, ensuring mechanical and footprint compatibility on PCB layouts designed for the TPS2020D.