TPS2034DG4 Equivalent & Substitute Parts

Part Overview

The TPS2034DG4 is a Power Management Integrated Circuit (PMIC) functioning as a general-purpose N-Channel power switch with 1:1 input-to-output ratio and high-side output configuration. Manufactured by Texas Instruments, this component delivers 2A maximum output current in an 8-SOIC surface-mount package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and production continuity.

Substiute Parts

TPS2034DG4

Texas InstrumentsIn Stock: 979TPS2034DG4 Datasheet

Current PartRFQ

TPS2024D

Texas InstrumentsIn Stock: 2513TPS2024D Datasheet

Parametric EquivalentRFQ

TPS2034D

Texas InstrumentsIn Stock: 2039TPS2034D Datasheet

MFR RecommendedRFQ

AP2151SG-13

Diodes IncorporatedIn Stock: 12771AP2151SG-13 Datasheet

MFR RecommendedRFQ

AP2171SG-13

Diodes IncorporatedIn Stock: 12953AP2171SG-13 Datasheet

MFR RecommendedRFQ

AP2191SG-13

Diodes IncorporatedIn Stock: 72611AP2191SG-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS2034DG4 is determined by the following critical parameters:

• Output Type & Configuration: High-side output with 1:1 input-to-output ratio
• Load Voltage Range: 2.7V ~ 5.5V compatibility
• Maximum Output Current: Minimum 2A capability
• On-Resistance (Rds On): Electrical performance at 33mOhm typical
• Fault Protection: Current limiting, over-temperature, and UVLO protection
• Package Compatibility: 8-SOIC surface-mount form factor
• Input Logic: Non-inverting control interface
• Status Flag Feature: Presence of output status indication

Substitute parts are categorized into two groups:

Group 1 - Direct N-Channel Equivalents: Parts maintaining identical output channel type (N-Channel) with matching electrical specifications and operating temperature range.

Group 2 - Functional Alternatives with Channel Topology Variation: Parts utilizing P-Channel output topology with equivalent current handling and protection features, suitable for applications where channel polarity can be accommodated through circuit design.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TPS2034D

The TPS2034D is the manufacturer-recommended direct substitute for the TPS2034DG4. This Texas Instruments component maintains identical electrical specifications including 2A output current, 33mOhm on-resistance, and non-inverting input logic. The part is currently in active production status with 2000 units in stock. Operating temperature range extends to 125°C junction temperature, matching the original specification. Packaging, RoHS compliance, and MSL rating are identical. This substitute requires no circuit redesign and provides direct pin-compatible replacement.

Secondary Recommendation: TPS2024D

The TPS2024D offers equivalent electrical performance with identical current rating, on-resistance, and protection features. This part differs only in input logic configuration (inverting versus non-inverting), requiring circuit-level signal inversion accommodation. The component is actively produced with 2480 units available. All other parameters including voltage range, package, temperature rating, and compliance certifications match the original specification.

Alternative Consideration: AP2191SG-13

The AP2191SG-13 (Diodes Incorporated) provides functional substitution with 1.5A output current capability and equivalent protection architecture. This P-Channel topology requires circuit redesign to accommodate channel polarity reversal. The part is actively produced with 72504 units in stock and maintains identical load voltage range and package form factor. Operating temperature is limited to 85°C ambient, representing a reduction from the original 125°C junction temperature specification. MSL rating is 1 (Unlimited), matching the original part.

Alternative Consideration: AP2171SG-13

The AP2171SG-13 (Diodes Incorporated) delivers 1A output current with P-Channel topology and equivalent protection features. This substitute requires circuit redesign for channel polarity accommodation. The part is actively produced with 12900 units available. Operating temperature is limited to 85°C ambient. MSL rating is 3 (168 Hours), representing increased moisture sensitivity compared to the original specification.

Alternative Consideration: AP2151SG-13

The AP2151SG-13 (Diodes Incorporated) provides 500mA output current with P-Channel topology. This substitute is suitable only for applications with reduced current requirements and requires circuit redesign for channel polarity. The part is actively produced with 12700 units in stock. Operating temperature is limited to 85°C ambient. MSL rating is 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can TPS2034D be used as a direct replacement for TPS2034DG4 without circuit modification?

A: Yes. The TPS2034D is a direct pin-compatible substitute with identical electrical specifications, input logic configuration, and operating temperature range. No circuit redesign is required.

Q: What is the primary difference between TPS2034D and TPS2024D?

A: The TPS2024D utilizes inverting input logic, whereas the TPS2034D and TPS2034DG4 employ non-inverting logic. This difference requires signal inversion at the control input when substituting TPS2024D into designs specified for non-inverting operation.

Q: Why do the Diodes Incorporated alternatives (AP2191SG-13, AP2171SG-13, AP2151SG-13) have different output channel types?

A: These parts utilize P-Channel topology instead of N-Channel. While functionally equivalent in protection architecture and load voltage range, P-Channel configuration requires circuit redesign to accommodate reversed polarity in the power switching path.

Q: Are there current limitations when using AP2191SG-13 or AP2171SG-13 as substitutes?

A: Yes. The AP2191SG-13 provides 1.5A maximum output current, and the AP2171SG-13 provides 1A maximum output current, both below the original 2A specification. These alternatives are suitable only for applications with reduced current requirements.

Q: What is the impact of operating temperature differences in the Diodes Incorporated alternatives?

A: The AP2191SG-13, AP2171SG-13, and AP2151SG-13 are rated to 85°C ambient temperature, compared to the TPS2034DG4 specification of 125°C junction temperature. Applications requiring extended temperature operation above 85°C ambient must use Texas Instruments alternatives (TPS2034D or TPS2024D).

Q: How does MSL rating affect component handling and storage?

A: MSL 1 (Unlimited) rating indicates no moisture sensitivity restrictions during storage and handling. MSL 3 (168 Hours) rating, applicable to AP2171SG-13, requires controlled humidity storage and limits shelf life to 168 hours after moisture exposure. The original TPS2034DG4 and recommended substitutes carry MSL 1 rating.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original TPS2034DG4 specification.

Q: Can multiple substitute parts be used interchangeably within a single production run?

A: Direct substitution is limited to TPS2034D without circuit modification. Use of TPS2024D requires input signal inversion. Use of Diodes Incorporated alternatives (AP2191SG-13, AP2171SG-13, AP2151SG-13) requires circuit redesign for P-Channel topology accommodation. Mixed substitution within a single production run is not recommended without design validation.