Overview
The FSA4476UCX, produced by onsemi, is a high-performance USB Type-C port multimedia switch designed to support analog audio headsets. This component allows the sharing of a common USB Type-C port to pass USB 2.0 signals, analog audio, sideband use wires, and analog microphone signals. It is particularly useful in devices that require multiple functionalities from a single USB Type-C port, such as mobile phones, tablets, notebook PCs, and media players.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VBAT Supply Voltage | 2.7 | - | 5.5 | V |
| VBUS Supply Voltage | 4.0 | - | 20 | V |
| USB Switch Bandwidth | - | 1 GHz | - | - |
| USB Switch RON | - | 3 Ω | - | Ω |
| Audio Switch THD+N | -110 dB | - | - | dB |
| Audio Switch RON | - | 0.6 Ω | - | Ω |
| High Voltage Protection on CC Port | - | 20 V | - | V |
| High Voltage Protection on DP/R and DN/L Port | - | 16 V | - | V |
| Package Type | - | 25-ball WLCSP | - | - |
| Package Dimensions | - | 2.03 mm x 2.03 mm x 0.586 mm | - | - |
Key Features
- Power Management: Supports dual power supply with VBAT rail (2.7 V to 5.5 V) and VBUS rail (4.0 V to 20 V).
- USB High Speed Switch: Supports USB 2.0 signals with a bandwidth of 1 GHz and typical RON of 3 Ω.
- Audio Switch: Features low distortion (THD+N = -110 dB) and low on-resistance (RON = 0.6 Ω).
- High Voltage Protection: Provides protection up to 20 V on CC ports and 16 V on DP/R and DN/L ports.
- Headset Detection: Integrates headset unplug detection by monitoring CCx_H voltage.
- Dead Battery Support: Supports dead battery applications by detecting and responding to CC line pull-up from the source device.
- OMTP and CTIA Pinout Support: Compatible with both OMTP and CTIA pinout configurations).
- Pb-Free Device: Compliant with lead-free requirements).
Applications
- Mobile Phones
- Tablets
- Notebook PCs
- Media Players
Q & A
- What is the primary function of the FSA4476UCX?
The FSA4476UCX is a USB Type-C port multimedia switch that supports analog audio headsets and allows the sharing of a common USB Type-C port for USB 2.0 signals, analog audio, sideband use wires, and analog microphone signals.
- What are the power supply voltage ranges for VBAT and VBUS?
VBAT: 2.7 V to 5.5 V, VBUS: 4.0 V to 20 V).
- What is the bandwidth of the USB switch?
The USB switch has a bandwidth of 1 GHz).
- What is the typical on-resistance of the audio switch?
The typical on-resistance of the audio switch is 0.6 Ω).
- Does the FSA4476UCX support high voltage protection?
- How does the FSA4476UCX detect headsets?
The FSA4476UCX detects headsets by monitoring the CCx_H voltage).
- Does the FSA4476UCX support dead battery applications?
- What package type and dimensions does the FSA4476UCX come in?
The FSA4476UCX comes in a 25-ball WLCSP package with dimensions of 2.03 mm x 2.03 mm x 0.586 mm).
- Is the FSA4476UCX Pb-free?
- What are some common applications for the FSA4476UCX?
