AP2191AFM-7 Equivalent & Substitute Parts

Part Overview

The AP2191AFM-7 is a Power Management IC (PMIC) functioning as a P-Channel power switch with 1:1 configuration, rated for 1.5A output current in a 6-UFDFN Exposed Pad surface mount package. This component is classified as Obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The part operates across a load voltage range of 2.7V to 5.5V with integrated fault protection including current limiting, over-temperature monitoring, reverse current blocking, and under-voltage lockout (UVLO).

Substiute Parts

AP2191AFM-7

Diodes IncorporatedIn Stock: 985AP2191AFM-7 Datasheet

Current PartRFQ

AP2181AFM-7

Diodes IncorporatedIn Stock: 1146AP2181AFM-7 Datasheet

DirectRFQ

AP2181FMG-7

Diodes IncorporatedIn Stock: 3124AP2181FMG-7 Datasheet

Parametric EquivalentRFQ

AP2191FMG-7

Diodes IncorporatedIn Stock: 5600AP2191FMG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP2191AFM-7 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Output Type: P-Channel
• Number of Outputs: 1
• Ratio - Input:Output: 1:1
• Output Configuration: High Side
• Voltage - Load: 2.7V ~ 5.5V
• Current - Output (Max): 1.5A
• Rds On (Typ): 90mOhm
• Package / Case: 6-UFDFN Exposed Pad
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C (TA)

Acceptable Variations:

• Product Status: Active substitutes are preferred over Obsolete
• Packaging Format: Tube or Tape & Reel (TR) acceptable for equivalent electrical performance
• Input Type: Both Inverting and Non-Inverting configurations qualify as substitutes based on circuit design requirements
• Fault Protection: Additional protection features (Short Circuit) beyond the minimum set are acceptable

Two active substitute parts meet these criteria: AP2181AFM-7 and AP2181FMG-7 / AP2191FMG-7.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: AP2191FMG-7

The AP2191FMG-7 is the direct functional equivalent with matching input type (Non-Inverting) and identical electrical specifications. This part is Active status with the highest inventory availability (5572 Pcs). Packaging is Tape & Reel (TR) format, suitable for automated assembly processes. All compliance certifications (ROHS3, REACH Unaffected) are maintained.

Secondary Recommendation: AP2181FMG-7

The AP2181FMG-7 provides electrical equivalence with an Inverting input type configuration. This part is Active status with substantial inventory (3100 Pcs) and Tape & Reel packaging. The addition of Short Circuit protection in the fault protection feature set provides enhanced circuit safeguarding. Input type inversion requires circuit design accommodation.

Alternative: AP2181AFM-7

The AP2181AFM-7 matches the tube packaging format of the original part while providing Active product status. Inverting input type requires circuit design modification. Inventory availability is 1091 Pcs. This option is suitable for designs where packaging format consistency is a requirement.

All three substitute parts maintain identical load voltage range, output current rating, on-resistance, operating temperature range, and package footprint compatibility with the obsolete AP2191AFM-7.

Frequently Asked Questions (FAQ)

Q: Can AP2181AFM-7 or AP2181FMG-7 directly replace AP2191AFM-7 without circuit modification?

A: AP2181 variants feature Inverting input logic, while AP2191AFM-7 uses Non-Inverting input. Direct PCB substitution requires circuit design changes to accommodate inverted control signal polarity. AP2191FMG-7 maintains Non-Inverting input and requires no logic modification.

Q: What is the difference between AP2181FMG-7 and AP2181AFM-7?

A: Both parts are electrically identical with matching electrical parameters. The primary difference is packaging format: AP2181FMG-7 is supplied in Tape & Reel (TR) format for automated assembly, while AP2181AFM-7 is supplied in tube format. Inventory levels differ (3100 Pcs vs. 1091 Pcs respectively).

Q: Are AP2191FMG-7 and AP2191AFM-7 pin-compatible?

A: Yes. Both parts use the 6-UFDFN Exposed Pad package with identical pinout and footprint. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. tube).

Q: Does AP2181AFM-7 provide additional protection compared to AP2191AFM-7?

A: AP2181AFM-7 includes Short Circuit protection in addition to the Current Limiting (Fixed), Over Temperature, Reverse Current, and UVLO features present in AP2191AFM-7. This represents enhanced fault protection capability.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original AP2191AFM-7 certifications. Moisture Sensitivity Level (MSL) rating is 1 (Unlimited) for all variants.

Q: Which substitute part has the best inventory availability?

A: AP2191FMG-7 has the highest inventory level at 5572 Pcs New Original In Stock, followed by AP2181FMG-7 at 3100 Pcs, and AP2181AFM-7 at 1091 Pcs.