Details

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BUY GL823 https://www.utsource.net/itm/p/12610429.html

Parameter	Description	Value
Device Name	USB 2.0 Hub Controller IC	GL823
Package	QFN-32	5x5 mm
Operating Voltage	VCC1 (USB Bus Power)	4.75V to 5.25V
Operating Voltage	VCC2 (System Power)	2.7V to 5.5V
Operating Temperature	Industrial Grade (I)	-40掳C to +85掳C
Operating Temperature	Commercial Grade (C)	0掳C to +70掳C
Data Rate	High-Speed (HS) Operation	480 Mbps
Data Rate	Full-Speed (FS) Operation	12 Mbps
Data Rate	Low-Speed (LS) Operation	1.5 Mbps
Number of Downstream Ports	Downstream Ports	4
USB Standard Compliance	USB 2.0 Specification	Yes
Integrated Transceivers	HS/FS/LS Transceivers	Yes
Integrated PHY	High-Speed Transceiver	Yes
Integrated Hub Controller	Hub Controller	Yes
Power Consumption	Active Mode (All Ports HS)	200 mA (max)
Power Consumption	Suspend Mode	0.5 mA (max)
Overcurrent Protection	Overcurrent Detection per Port	Yes
ESD Protection	Human Body Model (HBM)	卤8 kV
Electrical Isolation	Isolation Voltage	2.5 kVrms (optional)
Wake-up Support	Remote Wake-up	Yes
Package Marking	Part Number and Date Code	GL823 + Date Code

Instructions for Use

1. Power Supply:

   • Connect VCC1 (4.75V to 5.25V) to the USB bus power.
   • Connect VCC2 (2.7V to 5.5V) to the system power.

2. Grounding:

   • Ensure a common ground between VCC1 and VCC2.

3. USB Connection:

   • Connect the USB D+ and D- lines to the upstream port.
   • Connect the downstream ports to the desired devices.

4. Overcurrent Protection:

   • Each downstream port has built-in overcurrent detection. Monitor the status through the hub controller.

5. Suspend and Resume:

   • The device supports remote wake-up. Ensure the wake-up signal is properly configured in the system.

6. ESD Protection:

   • Handle the device with care to avoid ESD damage. Use proper grounding and handling procedures.

7. Mounting:

   • Place the device on a PCB with appropriate thermal management to ensure reliable operation within the specified temperature range.

8. Firmware and Configuration:

   • Refer to the datasheet and application notes for detailed firmware and configuration settings.

9. Testing:

   • Test the device in both active and suspend modes to ensure compliance with USB 2.0 standards.

10. Optional Features:

    • If using the optional electrical isolation, ensure the isolation voltage is correctly applied and tested.

For more detailed information, refer to the GL823 datasheet and application notes provided by the manufacturer.

(For reference only)