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AP2142MPG-13 Equivalent & Substitute Parts
Part Overview
The AP2142MPG-13 is a Power Switch/Driver IC manufactured by Diodes Incorporated, configured as a 1:2 P-Channel USB Switch with 500mA output capability in an 8-MSOP-EP package. The device operates across a 2.7V to 5.5V load voltage range and includes integrated fault protection featuring current limiting, over-temperature protection, reverse current blocking, and UVLO (Under-Voltage Lock-Out). The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Equivalent and substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility permits selection from functionally compatible alternatives within the same electrical and mechanical parameter space.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AP2142MPG-13 |
| Manufacturer | Diodes Incorporated |
| Category | Power Management (PMIC) |
| Switch Type | USB Switch |
| Number of Outputs | 2 |
| Ratio - Input:Output | 1:2 |
| Output Type | P-Channel |
| Output Configuration | High Side |
| Voltage - Load | 2.7V ~ 5.5V |
| Current - Output (Max) | 500mA |
| Rds On (Typ) | 115mOhm |
| Input Type | Non-Inverting |
| Features | Status Flag |
| Fault Protection | Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the AP2142MPG-13 is determined by the following critical parameters:
Primary Substitution Criteria:
- Output Configuration: High Side
- Output Type: P-Channel (for direct pin-compatible substitution)
- Number of Outputs: 2 (for functional equivalence in dual-output applications)
- Ratio - Input:Output: 1:2
- Voltage - Load: 2.7V ~ 5.5V
- Current - Output (Max): 500mA
- Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Operating Temperature: -40°C ~ 85°C (TA)
Diodes Incorporated P-Channel Direct Equivalents (1:2 Configuration): Parts AP2142MPG-13, AP2146MPG-13, and AP2152MPG-13 share identical output configuration, channel type, output count, and voltage/current ratings. These parts differ only in Rds On specifications (115mOhm vs. 90mOhm) and inventory availability, making them functionally interchangeable in applications where on-resistance variation is within design tolerance.
Diodes Incorporated P-Channel Alternatives (1:1 Configuration): Parts AP2145MPG-13, AP2151AMP-13, AP2151MPG-13, and AP2155MPG-13 provide single-output (1:1) alternatives with identical voltage, current, and temperature specifications. These are suitable for applications requiring only one output channel. AP2155MPG-13 is marked obsolete and should not be selected for new designs.
Cross-Manufacturer Alternative (N-Channel): TPS2042BDGN and TPS2042BDGNR (Texas Instruments) provide functionally similar switching capability with N-Channel output type, inverting input logic, and superior Rds On performance (70mOhm). These require circuit-level design changes due to inverted control logic and different channel polarity.
Parameter Comparison
| Part Number | Manufacturer | Outputs | Ratio | Channel Type | Rds On (Typ) | Input Type | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|
| AP2142MPG-13 | Diodes Inc. | 2 | 1:2 | P-Channel | 115mOhm | Non-Inverting | Active | 2,100 Pcs |
| AP2146MPG-13 | Diodes Inc. | 2 | 1:2 | P-Channel | 90mOhm | Non-Inverting | Active | 2,962 Pcs |
| AP2152MPG-13 | Diodes Inc. | 2 | 1:2 | P-Channel | 115mOhm | Non-Inverting | Active | 1,347 Pcs |
| AP2145MPG-13 | Diodes Inc. | 1 | 1:1 | P-Channel | 90mOhm | Non-Inverting | Active | 2,865 Pcs |
| AP2151AMP-13 | Diodes Inc. | 1 | 1:1 | P-Channel | 95mOhm | Non-Inverting | Active | 3,700 Pcs |
| AP2151MPG-13 | Diodes Inc. | 1 | 1:1 | P-Channel | 95mOhm | Non-Inverting | Active | 2,004 Pcs |
| AP2155MPG-13 | Diodes Inc. | 1 | 1:1 | P-Channel | 90mOhm | Non-Inverting | Obsolete | 5,800 Pcs |
| TPS2042BDGN | Texas Instruments | 2 | 1:1 | N-Channel | 70mOhm | Inverting | Active | 24,860 Pcs |
| TPS2042BDGNR | Texas Instruments | 2 | 1:1 | N-Channel | 70mOhm | Inverting | Active | 20,055 Pcs |
Engineering Selection Recommendations
For Direct Pin-Compatible Substitution (Dual-Output P-Channel 1:2):
AP2146MPG-13 is the preferred substitute when AP2142MPG-13 is unavailable. Both maintain identical electrical specifications except for improved Rds On performance (90mOhm vs. 115mOhm), resulting in lower power dissipation. AP2146MPG-13 is in active production with adequate inventory (2,962 units) and carries ROHS3 compliance with MSL 1 rating.
AP2152MPG-13 provides equivalent electrical performance to AP2142MPG-13 with matching 115mOhm Rds On specification. This part is suitable when thermal performance is not a limiting factor. Inventory is lower (1,347 units), and product status is active with full compliance certifications.
For Single-Output Applications (P-Channel 1:1):
AP2145MPG-13 is recommended for designs requiring only one output channel. It delivers superior Rds On performance (90mOhm) with higher inventory availability (2,865 units) and active product status. Circuit redesign is required to accommodate the single-output configuration.
AP2151AMP-13 and AP2151MPG-13 provide alternative single-output options with marginally higher Rds On (95mOhm) but maintain full compatibility with the AP2142MPG-13 electrical and thermal specifications. Both are in active production.
For Cross-Manufacturer Substitution (N-Channel Alternative):
TPS2042BDGN and TPS2042BDGNR (Texas Instruments) are functionally equivalent alternatives only when circuit-level design modifications are acceptable. These parts feature inverted input logic (Inverting vs. Non-Inverting) and N-Channel output type, requiring control signal inversion and load-side switching topology changes. The superior Rds On performance (70mOhm) provides thermal advantages. Both variants are in active production with substantial inventory (24,860 and 20,055 units respectively) and ROHS3 compliance.
Obsolete Part Avoidance:
AP2155MPG-13 is marked obsolete and must not be selected for new designs despite adequate inventory levels. Existing designs using this part should transition to AP2145MPG-13 or AP2151MPG-13 for long-term supply assurance.
Frequently Asked Questions (FAQ)
Q: Can AP2146MPG-13 directly replace AP2142MPG-13 without circuit modification?
A: Yes. AP2146MPG-13 is a direct pin-compatible substitute with identical package, pinout, voltage ratings, current capacity, and output configuration. The only difference is improved Rds On performance (90mOhm vs. 115mOhm), which reduces power dissipation and heat generation. No circuit changes are required.
Q: What is the difference between AP2142MPG-13 and AP2145MPG-13?
A: AP2142MPG-13 provides two independent output channels (1:2 configuration), while AP2145MPG-13 provides a single output channel (1:1 configuration). Both share identical voltage, current, temperature, and package specifications. Selection depends on whether your application requires dual or single output switching. Circuit redesign is necessary to accommodate the different output count.
Q: Why would I choose AP2152MPG-13 over AP2146MPG-13?
A: Both are dual-output P-Channel switches with identical electrical performance except for Rds On specification. AP2146MPG-13 offers superior thermal performance (90mOhm vs. 115mOhm). AP2152MPG-13 should be selected only when AP2146MPG-13 is unavailable and thermal performance is not a design constraint. Inventory of AP2152MPG-13 is lower (1,347 units vs. 2,962 units).
Q: Can TPS2042BDGN replace AP2142MPG-13 in my design?
A: TPS2042BDGN is functionally equivalent but requires circuit-level modifications. The key differences are: (1) N-Channel output type instead of P-Channel, requiring load-side switching instead of high-side switching; (2) Inverting input logic instead of Non-Inverting, requiring control signal inversion; (3) Different output configuration (1:1 vs. 1:2). These changes necessitate redesign of the control and power delivery circuits. Use TPS2042BDGN only when design flexibility permits these modifications and when superior Rds On performance (70mOhm) provides system-level benefits.
Q: Is AP2155MPG-13 suitable for new designs?
A: No. AP2155MPG-13 is marked obsolete and should not be selected for new product development. Existing designs using this part should transition to AP2145MPG-13 or AP2151MPG-13 to ensure long-term supply continuity and manufacturing support.
Q: What does the "1:2" ratio mean in AP2142MPG-13?
A: The 1:2 ratio indicates one input control signal manages two independent output channels. This allows a single control pin to switch two separate load paths simultaneously. In contrast, 1:1 ratio parts (AP2145MPG-13, AP2151AMP-13) provide one output channel per device.
Q: Are all these parts in the same package?
A: All Diodes Incorporated parts (AP2142MPG-13, AP2146MPG-13, AP2152MPG-13, AP2145MPG-13, AP2151AMP-13, AP2151MPG-13, AP2155MPG-13, AP2156MPG-13) use the 8-MSOP-EP package with identical pinout and mechanical dimensions. Texas Instruments parts (TPS2042BDGN, TPS2042BDGNR) use the 8-HVSSOP package, which has the same footprint and pin count but different internal die configuration. PCB layout compatibility is maintained, but electrical behavior differs due to channel type and input logic inversion.
Q: What is MSL 1 rating and why does it matter?
A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture baking requirements. AP2142MPG-13 and most active Diodes Incorporated alternatives carry MSL 1 rating, meaning they can be stored indefinitely at standard conditions without special handling. AP2155MPG-13 (obsolete) carries MSL 3 rating, requiring moisture baking before reflow soldering. This is another reason to avoid AP2155MPG-13 in new designs.
Q: What is the significance of ROHS3 compliance?
A: ROHS3 compliance certifies that the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All active parts in this comparison carry ROHS3 certification, ensuring regulatory compliance for commercial and industrial applications in regions enforcing these standards.
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