Hi,
We are developing a medical device which is the interface between Ultrasound transducer and portable USB device (eg. Mobile, Tablet etc.). Below are the requirement specification of the interface Module
- It is a self-battery powered device with single cell 3.7V li-ion battery
- The interface module has got two USB ports (Port1 and Port2).
- Port 1 is used for connecting the ultrasound transducer device and charger (for charging in built battery) (USB OTG is required for this port).
- There is multicolor LED indication on the module which shows the battery level and charging status as mentioned in the following table.
|
Conditions |
LED State |
Notes |
|
Interface module battery charging |
Blinks when charging, Solid when charging is complete |
Red glows for Vbat <= 20% Yellow glows for 20 % <Vbat<80% Green glows for vbat> 80% |
|
Interface module connected to Portable USB device on port 2, Discharging |
Solid |
Red glows for Vbat <= 20% Yellow glows for 20 % <Vbat<80% Green glows for vbat> 80% |
|
Nothing is connected and push button Switch is pressed |
Solid for 15 to 20 sec |
Red glows for Vbat <= 20% Yellow glows for 20 % <Vbat<80% Green glows for vbat> 80% |
I have also attached the block diagram for better understanding of the interfaces. Please suggest any charger IC or a fuel gauge IC which can fulfill the above requirements. LED indication control requirement is on priority to meet.
