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Product Detailed Parameters
- Description：IC PWR SWITCH P-CHAN 1:1 6UDFN
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Switch Type：USB Switch
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：P-Channel
- Interface：On/Off
- Voltage - Load：2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：1.5A
- Rds On (Typ)：90mOhm
- Input Type：Inverting
- Features：Status Flag
- Fault Protection：Current Limiting (Fixed), Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：U-DFN2018-6
- Package / Case：6-UFDFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The AP2181AFM-7 is a single-channel high-side power switch from Diodes Incorporated, designed for USB and hot-swap applications. It supports an input voltage range of 2.7V to 5.5V with a maximum output current of 1.5A. The device features an accurate current limit of 2.1A and a typical on-resistance of 95mΩ. It includes thermal limiting, short-circuit protection, and controlled rise time. The enable input is active low, and it provides a fault flag with 7ms deglitch capability. Operating temperature ranges from -40°C to +85°C in a UDFN-6 package.
Feature Summary
- Integrated over-current and thermal protection with accurate current limiting
- Active low enable interface for simplified control logic
- Fault reporting via open-drain flag with 7ms blanking time
- Reverse current blocking capability for bus isolation
Applications
- USB port power switching
- Hot-swap circuit protection
- Peripheral power distribution
- Battery-powered device load switching
Procurement Notes
Verify the suffix 'AFM' corresponds to the specific UDFN-6 package and active-low enable variant. Confirm RoHS compliance and lead-free finish status through official Diodes Incorporated documentation. Ensure the ordering part number matches the required enable polarity and package type for your design requirements.
Selection Notes
Select this component when a single-channel high-side switch with active-low enable is required. It is suitable for applications needing 1.5A continuous current with integrated protection. Compare against AP2191 if an active-high enable signal is preferred. Verify package availability and thermal performance for your PCB layout constraints.
Part Context
Part of the AP2181/AP2191 family of single-channel USB power switches. Shares core electrical characteristics with other variants differing primarily in enable polarity (active low vs. active high) and package options such as SOT25, SOP-8L, and DFN2018-6.
Replacement Considerations
AP2191AFM-7 offers identical electrical performance but uses an active-high enable input instead of active-low. Other AP2181 variants with different packages (e.g., AP2181WG-7 in SOT25) may be pin-compatible depending on the footprint.
