Hello all,
I have recently designed and assembled a circuit for a Quectel M95 unit to be controlled by usart from an atmel microcontroller. I have a problem with th epower supply of the M95, I followed the reference circuit provided in their datasheet, onluy thing I changed was the voltage divider circuit near the regulator to get 4.5V rather then 4.16, still within the M95 limits. Whenever I turn it on it starts to smoke and short exactly on the Vbat pins, I have been looking at it for a couple of days now trying to figure out what I missed.
Maybe some fresh eyes will notice something I missed.
I have uploaded my circuit below.
Thanks
I have recently designed and assembled a circuit for a Quectel M95 unit to be controlled by usart from an atmel microcontroller. I have a problem with th epower supply of the M95, I followed the reference circuit provided in their datasheet, onluy thing I changed was the voltage divider circuit near the regulator to get 4.5V rather then 4.16, still within the M95 limits. Whenever I turn it on it starts to smoke and short exactly on the Vbat pins, I have been looking at it for a couple of days now trying to figure out what I missed.
Maybe some fresh eyes will notice something I missed.
I have uploaded my circuit below.
Thanks
