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MCHPUSB3346-CP

Microchip Technology
1/1 Transceiver USB 2.0 24-QFN (4x4)
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Overview

The USB3346-CP is a high-speed USB 2.0 transceiver featuring a ULPI interface and integrated battery charging detection. It utilizes flexPWR technology to minimize power consumption, drawing only 36uA in sleep mode, while providing robust ESD protection up to 25kV IEC air discharge. The device includes integrated regulators and an over-voltage protection circuit capable of withstanding up to 30V on the VBUS pin.

Why Choose This Part

This transceiver reduces BOM cost and PCB footprint by integrating 1.8V and 3.3V regulators and requiring no external ESD protection components. Its VariSense technology and PHYBoost feature allow for fine-tuning signal integrity to compensate for long PCB traces or connector losses.

Applications

Portable Media Players
Ideal for battery-operated consumer devices requiring high-speed data transfer and USB-IF BC 1.2 battery charging compliance.
Mobile Handsets
Used in smartphones to manage USB connectivity and interface with application processors via the ULPI wrapper-less design.
USB Headsets and Accessories
The integrated USB switch and smart detection circuits allow for seamless identification of audio headsets and chargers.
Industrial Handhelds
Provides reliable USB 2.0 communication in harsh environments with -40C to 85C operating temperature support and high ESD tolerance.

Key Specifications

Type Transceiver
Protocol USB 2.0
Mounting Type Surface Mount
Package / Case 24-VFQFN Exposed Pad
Receiver Hysteresis 150 mV
Operating Temperature -40degC ~ 85degC
Supplier Device Package 24-QFN (4x4)
Number of Drivers/Receivers 1/1

Getting Started

Designers should interface the USB3346-CP with a ULPI-compliant Link layer controller using a 60MHz clock, which can be sourced externally or generated by the internal PLL. Ensure the 24-QFN exposed pad is properly soldered to a ground plane for thermal dissipation and electrical performance.

Also Consider

USB3340-EZK MCHPMicrochip Technology - A similar ULPI transceiver in a slightly different package variant for applications requiring the same flexPWR features.
USB3320C-EZK MCHPMicrochip Technology - An alternative high-speed USB PHY often used in industrial applications requiring ULPI interfacing.
TUSB1210 TITexas Instruments - A widely used standalone USB 2.0 ULPI PHY that also supports battery charging detection and various clocking modes.

Categories

Interface ICs > USB Interface ICs Microcontrollers > Microchip Consumer Electronics > USB & Charging