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Product Detailed Parameters
- Description：IC PWR SWITCH P-CHANNEL 1:1 6DFN
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Load Discharge, Status Flag
- Fault Protection：Current Limiting (Fixed), Over Temperature, Reverse Current, 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 AP2181DFMG-7 is a single-channel high-side power switch IC designed for USB 2.0 applications, manufactured by Diodes Incorporated. It operates within a supply voltage range of 2.7 V to 5.5 V and delivers a continuous output current of 1.5 A with a maximum current limit of 2.1 A. The device features a low on-resistance of 90 mOhms and utilizes a UDFN-6 surface-mount package. It supports fast switching with rise and fall times of 50 us each, functioning reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Integrated overcurrent protection with fixed current limiting at 2.1 A
- Low on-resistance design for efficient power distribution
- Fast switching capability suitable for USB hot-plug scenarios
Applications
- USB 2.0 port power switching
- Peripheral power distribution circuits
- Battery-powered device load switches
Procurement Notes
Verify the specific suffix 'DFMG' against the manufacturer's official datasheet to confirm pinout compatibility and RoHS status. Ensure the UDFN-6 footprint matches your PCB layout requirements. Confirm that the 1.5A continuous current rating meets your system's peak load demands without triggering thermal shutdown.
Selection Notes
Select this component when a single-channel high-side switch with 1.5A capacity is required for USB applications. Compare the 90 mOhm on-resistance against alternatives if lower conduction loss is critical. Verify that the 2.7V minimum operating voltage aligns with your system's battery or rail specifications.
Part Context
This part belongs to the AP2181 series of USB power switches from Diodes Incorporated. It is distinct from other series like AP2151 (0.5A) or AP2191 (P-channel). The DFMG suffix indicates the specific tape-and-reel packaging and UDFN-6 package variant.
FAQ
What is the maximum current limit of the AP2181DFMG-7?
The device has a fixed current limit of 2.1 A.
Does the AP2181DFMG-7 support reverse current flow?
Standard documentation for this specific high-side switch does not explicitly list reverse current blocking as a primary feature compared to dedicated ideal diode controllers.
