AP2181DSG-13 Equivalent & Substitute Parts

Part Overview

The AP2181DSG-13 is an active power switch IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) device. It functions as a P-Channel power switch/driver with 1:1 ratio configuration, designed for high-side load switching applications. The device operates at 1.5A maximum output current with integrated fault protection including current limiting, over-temperature protection, reverse current blocking, and under-voltage lockout (UVLO). The part is currently in active production status with 2900 units available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

AP2181DSG-13

Diodes IncorporatedIn Stock: 2989AP2181DSG-13 Datasheet

Current PartRFQ

AP2191DSG-13

Diodes IncorporatedIn Stock: 58694AP2191DSG-13 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP2181DSG-13 are qualified based on strict electrical and mechanical parameter equivalence. The following parameters define substitution eligibility:

Critical Matching Parameters:

• Output Type: P-Channel
• Output Configuration: High Side
• Number of Outputs: 1
• Ratio - Input:Output: 1:1
• Current - Output (Max): 1.5A
• Voltage - Load: 2.7V ~ 5.5V
• Rds On (Typ): 95mOhm
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C (TA)
• Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
• Features: Load Discharge, Status Flag

Allowable Variation:

• Input Type: May differ (Inverting vs. Non-Inverting) based on circuit design requirements

The AP2191DSG-13 qualifies as a parametric equivalent substitute, with the distinction that it features Non-Inverting input logic compared to the Inverting input of the AP2181DSG-13.

Parameter Comparison

Engineering Selection Recommendations

Both AP2181DSG-13 and AP2191DSG-13 are active production devices from Diodes Incorporated with identical ROHS3 compliance and MSL ratings. Selection between these parts depends on input logic requirements:

AP2181DSG-13 is specified for applications requiring Inverting input logic, where a high input signal drives the output low.

AP2191DSG-13 is specified for applications requiring Non-Inverting input logic, where a high input signal drives the output high.

Both devices maintain identical electrical performance across all other parameters including current rating, voltage range, on-resistance, thermal protection, and package specifications. Component selection must align with the control signal polarity required by the circuit design. Both parts carry equivalent regulatory compliance and supply chain status.

Frequently Asked Questions (FAQ)

Q: Can AP2191DSG-13 be used as a direct replacement for AP2181DSG-13?

A: AP2191DSG-13 is electrically equivalent to AP2181DSG-13 across all parameters except input logic type. Direct substitution is possible only if the circuit design accommodates Non-Inverting input logic. If the application requires Inverting input logic, signal conditioning or circuit redesign is necessary.

Q: What is the difference between Inverting and Non-Inverting input types?

A: Inverting input (AP2181DSG-13) produces an active-low output response to a high input signal. Non-Inverting input (AP2191DSG-13) produces an active-high output response to a high input signal. The selection depends on the control signal polarity in the host circuit.

Q: Are the packages identical between AP2181DSG-13 and AP2191DSG-13?

A: Both parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging. PCB footprints and assembly processes are identical.

Q: Do both parts have the same fault protection features?

A: Both AP2181DSG-13 and AP2191DSG-13 include identical fault protection: current limiting (fixed), over-temperature protection, reverse current blocking, and under-voltage lockout (UVLO). Both include load discharge and status flag features.

Q: What is the maximum output current for both parts?

A: Both AP2181DSG-13 and AP2191DSG-13 support a maximum output current of 1.5A with typical on-resistance of 95mOhm.

Q: Are both parts RoHS compliant?

A: Both AP2181DSG-13 and AP2191DSG-13 are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level).