TPS2056DR Equivalent & Substitute Parts

Part Overview

The TPS2056DR is a Power Management Integrated Circuit (PMIC) manufactured by Texas Instruments, classified as a Power Switch/Driver with 1:2 input-to-output ratio and N-Channel configuration. This component operates as a general-purpose power switch with dual outputs, rated for 250mA maximum output current and 2.7V to 5.5V load voltage operation.

The TPS2056DR is currently listed as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for applications utilizing this power switching topology.

Substiute Parts

TPS2056DR

Texas InstrumentsIn Stock: 5978TPS2056DR Datasheet

Current PartRFQ

TPS2045DR

Texas InstrumentsIn Stock: 2048TPS2045DR Datasheet

Parametric EquivalentRFQ

TPS2046BDR

Texas InstrumentsIn Stock: 1969TPS2046BDR Datasheet

Parametric EquivalentRFQ

TPS2046DR

Texas InstrumentsIn Stock: 2569TPS2046DR Datasheet

Parametric EquivalentRFQ

TPS2056D

Texas InstrumentsIn Stock: 1232TPS2056D Datasheet

DirectRFQ

AP2152SG-13

Diodes IncorporatedIn Stock: 7732AP2152SG-13 Datasheet

MFR RecommendedRFQ

AP2192SG-13

Diodes IncorporatedIn Stock: 82859AP2192SG-13 Datasheet

MFR RecommendedRFQ

BD2066FJ-LBE2

Rohm SemiconductorIn Stock: 4105BD2066FJ-LBE2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS2056DR is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of Outputs: 2
• Ratio - Input:Output: 1:2
• Output Configuration: High Side
• Voltage - Load: 2.7V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 8-SOIC form factor compatibility
• Fault Protection: Current Limiting (Fixed), Over Temperature, UVLO

Secondary Compatibility Factors:

• Output Type (N-Channel or P-Channel with functional equivalence)
• Current - Output (Max): 250mA minimum
• Rds On (Typ): 80mOhm or lower
• Input Type: Non-Inverting preferred for direct replacement

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents (Texas Instruments TPS Series) Parts maintaining identical or superior electrical specifications with matching input-to-output ratios and N-Channel topology.

Category 2: Functional Equivalents (Alternative Manufacturers) Parts from Diodes Incorporated and Rohm Semiconductor offering equivalent switching functionality with enhanced current ratings or alternative channel types, suitable for applications where the primary constraint is power switching capability rather than exact topology matching.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Preferred for Pin-Compatible Substitution):

TPS2056D (Texas Instruments) provides the closest functional match to TPS2056DR, maintaining identical electrical specifications, input-to-output ratio (1:2), N-Channel topology, and non-inverting input configuration. Both parts are ROHS3 compliant and operate across the same temperature range. TPS2056D is listed as discontinued at DiGi Electronics but remains available through inventory channels. This part requires no circuit redesign for direct substitution.

Active Production Alternatives (Texas Instruments TPS Series):

TPS2046DR and TPS2046BDR are active production parts from Texas Instruments with identical output current ratings (250mA) and matching package specifications. Both maintain the 1:2 input-to-output ratio and high-side output configuration. The primary design consideration is the inverting input type, which requires signal inversion at the control input compared to the non-inverting TPS2056DR. TPS2046BDR offers a lower Rds On value (70mOhm versus 80mOhm), providing improved efficiency.

TPS2045DR is a single-output variant (1:1 ratio) with identical electrical characteristics. This part is suitable only for applications requiring single-output switching functionality.

Enhanced Current Capability Alternatives (Diodes Incorporated & Rohm Semiconductor):

AP2192SG-13 (Diodes Incorporated) and BD2066FJ-LBE2 (Rohm Semiconductor) provide 1:2 output configurations with significantly higher current ratings (1.5A versus 250mA). Both maintain non-inverting input control and 8-SOIC package compatibility. AP2192SG-13 uses P-Channel topology while BD2066FJ-LBE2 retains N-Channel configuration. These parts are suitable for applications requiring higher power delivery or where thermal margin improvement is beneficial. Both are ROHS3 compliant and actively produced.

AP2152SG-13 (Diodes Incorporated) offers 500mA output current with P-Channel topology and non-inverting input control, providing an intermediate current rating option.

Product Status Considerations:

All recommended substitutes are either active production parts or available through existing inventory. The TPS2056DR obsolescence status necessitates transition to active alternatives. TPS2046DR and TPS2046BDR represent the lowest-risk migration path for designs requiring minimal circuit modification. Higher-current alternatives from Diodes Incorporated and Rohm Semiconductor are appropriate for new designs or applications where increased current capacity provides system-level benefits.

Frequently Asked Questions (FAQ)

Q: Can TPS2046DR directly replace TPS2056DR without circuit modification?

A: TPS2046DR maintains identical electrical specifications and package form factor. The primary difference is input type: TPS2046DR uses inverting logic while TPS2056DR uses non-inverting logic. Direct PCB substitution is possible only if the control signal is inverted at the input stage. Otherwise, circuit redesign is required.

Q: What is the significance of the 1:2 input-to-output ratio?

A: The 1:2 ratio indicates that one control input manages two independent output switches. This configuration is essential for applications requiring dual-channel power switching from a single control signal. Substitutes must maintain this ratio to preserve circuit functionality.

Q: Are P-Channel alternatives (AP2152SG-13, AP2192SG-13) compatible with N-Channel designs?

A: P-Channel and N-Channel topologies have different gate drive requirements and switching characteristics. While both provide high-side switching, direct substitution requires circuit redesign including gate drive signal polarity reversal and potential bias network modifications. These parts are suitable for new designs rather than direct replacement.

Q: What is the impact of different Rds On values?

A: Rds On (on-state resistance) determines conduction losses and heat dissipation. Lower Rds On values (70mOhm in TPS2046BDR versus 80mOhm in TPS2056DR) reduce power loss and improve efficiency. Higher values in alternative manufacturers' parts (120mOhm) increase dissipation but remain acceptable for 250mA-rated applications.

Q: Why do some substitutes have higher current ratings (500mA to 1.5A)?

A: Higher current ratings provide design margin and thermal headroom for existing 250mA applications. These parts are backward-compatible for lower-current designs and offer improved reliability through reduced thermal stress. They are suitable for both direct replacement and future design upgrades.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements matching the original TPS2056DR specification.

Q: What package considerations apply to these substitutes?

A: All substitutes use 8-SOIC (0.154", 3.90mm width) surface-mount packaging, providing PCB footprint compatibility. Packaging variants (Tape & Reel versus Cut Tape) affect supply chain logistics but do not impact electrical or mechanical compatibility.

Q: Which substitute offers the best balance of compatibility and availability?

A: TPS2046DR provides the closest functional match with active production status and full inventory availability. It requires only input signal inversion for direct substitution. For applications where input inversion is undesirable, BD2066FJ-LBE2 maintains non-inverting control with enhanced current capability and active production status.