Users Manual

ME910C1 HW User Guide
1VV0301351 Rev.13 Page 24 of 106 2020-06-30
4. POWER SUPPLY
The power supply circuitry and board layout are a very important part in the full product
design and they strongly reflect on the product overall performances, hence read carefully
the requirements and the guidelines that will follow for a proper design.
Power Supply Requirements
The external power supply must be connected to VBATT and VBATT_PA pads and must
fulfil the following requirements:
Power Supply
Value
Nominal Supply Voltage 3.8V
Operating Voltage Range 3.40 V÷ 4.20 V
Extended Voltange Range 3.20 V÷ 4.50 V
NOTE:
The Operating Voltage Range MUST never be exceeded; care must
be taken when designing the application’s power supply section to
avoid having an excessive voltage drop.
If the voltage drop is exceeding the limits it could cause an
unintentional power off of ME910C1 module.
The Power supply must be higher than 3.20 V to power on the
ME910C1 module.
Overshoot voltage (regarding MAX Extended Operating Voltage) and
drop in voltage (regarding MIN Extended Operating Voltage) MUST
never be exceeded;
The “Extended Operating Voltage Range” can be used only with
completely assumption and application of the HW User guide
suggestions.