DIO4485WL25

Overview

The DIO4485WL25 is a USB Type-C analog switch IC manufactured by DIOO Microcircuits. It integrates USB 2.0, audio, and UART switching with protection functions and moisture detection. The device operates on a supply voltage of 2.7 V to 5.5 V with a typical operating current of 65 µA. It features a 1.05 GHz bandwidth for USB signals and supports OMTP, CTIA, and 3-pole audio jack pinouts. The component provides high voltage tolerance of +20 V DC and ±25 V surge capability on Type-C pins. It is housed in a WLCSP-25 package measuring 2.24 mm × 2.28 mm and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates automatic detection and configuration for OMTP, CTIA, and 3-pole audio headsets via CC_IN voltage monitoring.
• Includes built-in moisture detection supporting single-pin, multi-pin, and I2C-configurable polling modes using resistance and voltage methods.
• Provides overvoltage protection with configurable thresholds (4.4 V to 5.0 V) and high voltage/surge tolerance on USB Type-C receptacle pins.

Applications

• Mobile phones
• Tablets

Procurement Notes

Verify the specific ordering suffix WL25 against the manufacturer's datasheet to confirm the tape and reel packaging quantity and RoHS compliance status. Ensure the design accounts for the WLCSP-25 package dimensions and thermal requirements. Confirm that the I2C interface timing meets the system controller specifications before finalizing the bill of materials.

Selection Notes

Select the DIO4485 variant if default turn-on includes SBU1/SBU2 paths; choose DIO4485B if only DP_R/DN_L are required initially. Verify that the system power supply remains within the 2.7 V to 5.5 V range to ensure proper operation of the internal switches and comparator circuits. Consider the I2C slave address and register map compatibility with the host microcontroller.

Part Context

This component belongs to the DIO4485 series of USB Type-C analog switches designed for portable multimedia devices. It shares common Type-C pins for USB 2.0 signals and analog audio, utilizing sideband wires for analog microphone signals. The series supports high voltage and surge protection on the receptacle side, making it suitable for robust connector interfaces in consumer electronics.

Replacement Considerations

The DIO4485BWL25 is a verified alternative within the same family. Differences include default switch states: DIO4485 turns on SBU1~SBU2_H, while DIO4485B does not. Verify pinout compatibility and I2C register mapping before substitution.