AP2191FMG-7 Equivalent & Substitute Parts

Part Overview

The AP2191FMG-7 is an active high-side P-channel power switch manufactured by Diodes Incorporated, designed for USB switching applications. This component operates as a 1:1 power switch/driver with a maximum output current of 1.5A and an on-resistance of 90mOhm typical. The device is currently in active production status and is ROHS3 compliant with unlimited moisture sensitivity level rating. Alternative equivalent parts may be required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

AP2191FMG-7

Diodes IncorporatedIn Stock: 5600AP2191FMG-7 Datasheet

Current PartRFQ

AP2181FMG-7

Diodes IncorporatedIn Stock: 3124AP2181FMG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP2191FMG-7 is determined by strict equivalence across the following critical parameters:

• Output Type: P-Channel high-side configuration
• Switch Topology: 1:1 ratio, single output
• Load Voltage Range: 2.7V ~ 5.5V
• Maximum Output Current: 1.5A
• On-Resistance: 90mOhm typical
• Package: 6-UFDFN Exposed Pad (U-DFN2018-6)
• Mounting: Surface Mount, Tape & Reel
• Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
• Operating Temperature Range: -40°C ~ 85°C
• Compliance: ROHS3 Compliant, REACH Unaffected

The AP2181FMG-7 meets all electrical and mechanical substitution criteria. The primary functional difference is the input logic type (Inverting vs. Non-Inverting), which affects signal interpretation but does not prevent direct substitution in applications where input logic can be accommodated or inverted at the system level.

Parameter Comparison

Engineering Selection Recommendations

Both AP2191FMG-7 and AP2181FMG-7 are active production components with identical compliance certifications (ROHS3, REACH Unaffected) and unlimited moisture sensitivity ratings. Selection between these parts should be based on input logic requirements within the application circuit. The AP2191FMG-7 operates with non-inverting input logic, while the AP2181FMG-7 requires inverting input logic. All other electrical performance characteristics, thermal ratings, and protection features are equivalent. Both components are suitable for production use without additional qualification when input signal conditioning is properly implemented.

Frequently Asked Questions (FAQ)

Q: Can AP2181FMG-7 be used as a direct replacement for AP2191FMG-7?

A: The AP2181FMG-7 is electrically and mechanically equivalent to the AP2191FMG-7 with one critical difference: input logic polarity. The AP2181FMG-7 uses inverting input logic while the AP2191FMG-7 uses non-inverting input logic. Direct substitution is possible only if the application circuit can accommodate or invert the input signal accordingly.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 6-UFDFN Exposed Pad package (U-DFN2018-6) with identical footprints, pin configurations, and surface mount requirements.

Q: Do both parts have the same thermal and current handling capabilities?

A: Yes. Both parts are rated for 1.5A maximum output current, 90mOhm typical on-resistance, and operate across the identical temperature range of -40°C to 85°C.

Q: What protection features are included in both parts?

A: Both the AP2191FMG-7 and AP2181FMG-7 include current limiting (fixed), over-temperature protection, reverse current protection, and UVLO (under-voltage lockout).

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts carry identical ROHS3 compliance, REACH Unaffected status, and unlimited moisture sensitivity level (MSL 1) ratings.