NetBurner Community Forum

Hi, I have two SBL2e-100 Rev 1.2
In both when I connect 3.3V, the current is around 316mA and the chip is very hot to the finger.
Both works properly, they are detected by IPsetup and the web server for configuration.
I didn´t test by now the setial comms.
Are this current and temperature normal values?. The manual says the maximum current is 250mA

Thanks in advance

Hello,

The SBL2e does run warmer than just a processor because the Ethernet PHY is part of the chip. The data sheet on the product page for the SBL2e-100IR states the power at 300mA typical. The power draw can be higher depending on what your program is doing, such as the amount of Ethernet traffic.
https://netburner.com/products/serial-t ... net/sbl2e/#.

A power source of 3.3V at 500mA is recommended for your design to provide plenty of head room.

It looks like there is a reference to 250mA in the serial to Ethernet software manual, and I will initiate a ticket to have it removed. The purpose of that manual is to describe the software; all hardware related specifications should only be in the hardware data sheet (in the above link).

Hi Tom,thanks for your response,very appreciate