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AP2171AFM-7 Equivalent & Substitute Parts
Part Overview
The AP2171AFM-7 is an active Power Management IC (PMIC) classified as a Power Switch/Driver with P-Channel output configuration. This component functions as a USB Switch with 1:1 input-to-output ratio, delivering 1A maximum output current at 90mOhm typical on-resistance. The part is in Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters within the 2.7V to 5.5V load voltage range and -40°C to 85°C operating temperature window.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AP2171AFM-7 |
| Manufacturer | Diodes Incorporated |
| Category | Power Management (PMIC) |
| Switch Type | USB Switch |
| Output Type | P-Channel |
| Number of Outputs | 1 |
| Ratio - Input:Output | 1:1 |
| Output Configuration | High Side |
| Current - Output (Max) | 1A |
| Rds On (Typ) | 90mOhm |
| Voltage - Load | 2.7V ~ 5.5V |
| Interface | On/Off |
| 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 | 6-UFDFN Exposed Pad |
| Mounting Type | Surface Mount |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the AP2171AFM-7 are qualified based on the following critical parameters that determine functional and mechanical compatibility:
- Electrical Specifications: Output type (P-Channel), maximum output current (1A), on-resistance (90mOhm typical), load voltage range (2.7V ~ 5.5V), and fault protection features (Current Limiting, Over Temperature, Reverse Current, UVLO)
- Functional Configuration: 1:1 input-to-output ratio, High Side output configuration, On/Off interface, and Status Flag feature
- Package Compatibility: 6-UFDFN Exposed Pad surface mount package with U-DFN2018-6 supplier device package
- Environmental & Compliance: Operating temperature range (-40°C ~ 85°C), RoHS3 compliance, MSL 1 rating, and Active product status
The three identified substitutes (AP2161FMG-7, AP2171DFMG-7, AP2171FMG-7) match all critical electrical and mechanical parameters. The primary distinction is input type: AP2171AFM-7 and AP2171FMG-7 feature Non-Inverting input, while AP2161FMG-7 features Inverting input. AP2171DFMG-7 also features Non-Inverting input. Packaging format differs between Tape & Reel (TR) for AP2171AFM-7 and AP2171DFMG-7, and Cut Tape (CT) & Digi-Reel® for AP2171FMG-7.
Parameter Comparison
| Parameter | AP2171AFM-7 | AP2161FMG-7 | AP2171DFMG-7 | AP2171FMG-7 |
|---|---|---|---|---|
| Manufacturer | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Category | Power Management (PMIC) | Power Management (PMIC) | Power Management (PMIC) | Power Management (PMIC) |
| Switch Type | USB Switch | USB Switch | USB Switch | USB Switch |
| Output Type | P-Channel | P-Channel | P-Channel | P-Channel |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Ratio - Input:Output | 1:1 | 1:1 | 1:1 | 1:1 |
| Output Configuration | High Side | High Side | High Side | High Side |
| Current - Output (Max) | 1A | 1A | 1A | 1A |
| Rds On (Typ) | 90mOhm | 90mOhm | 90mOhm | 90mOhm |
| Voltage - Load | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Interface | On/Off | On/Off | On/Off | On/Off |
| Input Type | Non-Inverting | Inverting | Non-Inverting | Non-Inverting |
| Features | Status Flag | Status Flag | Status Flag | Status Flag |
| Fault Protection | Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO | Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO | Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO | Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 6-UFDFN Exposed Pad | 6-UFDFN Exposed Pad | 6-UFDFN Exposed Pad | 6-UFDFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | U-DFN2018-6 | U-DFN2018-6 | U-DFN2018-6 | U-DFN2018-6 |
| Product Status | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Packaging Format | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
All four parts maintain Active product status with full RoHS3 compliance and identical MSL 1 ratings, ensuring equivalent environmental and regulatory qualification. Selection between AP2171AFM-7 and its substitutes depends on circuit-level requirements and packaging availability:
AP2171AFM-7 (Primary Reference): Non-Inverting input type, Tape & Reel packaging, 3506 units in stock.
AP2171FMG-7: Functionally identical to AP2171AFM-7 with Non-Inverting input, differentiated by Cut Tape & Digi-Reel® packaging format, 5099 units in stock.
AP2171DFMG-7: Non-Inverting input configuration matching AP2171AFM-7 electrical behavior, Tape & Reel packaging, highest inventory availability at 156400 units.
AP2161FMG-7: Inverting input type represents a functional variant requiring circuit redesign if substituted for Non-Inverting applications, Tape & Reel packaging, 8406 units in stock.
Direct substitution is supported between AP2171AFM-7, AP2171FMG-7, and AP2171DFMG-7 without circuit modification. AP2161FMG-7 substitution requires input signal inversion accommodation in the control circuit.
Frequently Asked Questions (FAQ)
Q: Can AP2171FMG-7 replace AP2171AFM-7 directly on the PCB?
A: Yes. Both parts feature identical electrical specifications, P-Channel output, 1A maximum current, 90mOhm on-resistance, and Non-Inverting input type. The difference is packaging format: AP2171AFM-7 uses Tape & Reel while AP2171FMG-7 uses Cut Tape & Digi-Reel®. Footprint and pinout are identical (6-UFDFN Exposed Pad).
Q: What is the key difference between AP2171AFM-7 and AP2161FMG-7?
A: The primary difference is input type. AP2171AFM-7 features Non-Inverting input, while AP2161FMG-7 features Inverting input. All other electrical parameters are identical. Direct substitution requires circuit modification to invert the control signal.
Q: Are all substitutes qualified for the same operating temperature range?
A: Yes. All four parts operate across -40°C to 85°C (TA), meeting identical thermal specifications.
Q: Do packaging format differences affect electrical performance?
A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® are distribution formats only. Electrical performance, package footprint, and pinout remain identical across AP2171AFM-7, AP2171FMG-7, and AP2171DFMG-7.
Q: Which substitute offers the best inventory availability?
A: AP2171DFMG-7 provides the highest stock level at 156400 units, followed by AP2161FMG-7 at 8406 units, AP2171FMG-7 at 5099 units, and AP2171AFM-7 at 3506 units.
Q: Are all parts RoHS3 compliant?
A: Yes. All four parts carry ROHS3 Compliant status with MSL 1 (Unlimited) moisture sensitivity rating.
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