HE910 Hardware User Guide
1VV0300925 Rev. 32
Page
41
of
111
2019-11-25
5.
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 & VBATT_PA signals and must
fulfil the following requirements:
POWER SUPPLY
Nominal Supply Voltage
3.8 V
Normal Operating Voltage
Range
3.40 V÷ 4.20 V
Extended Operating
Voltage Range
3.10 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 a Power Off
of the module.
The Power supply must be higher than 3.22 V to power on the
module
NOTE:
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
Summary of Contents for HE910
Page 1: ... 01 2017 Mod 0805 2017 01 Rev 6 HE910 HW User Guide 1VV0300925 Rev 32 2019 11 25 ...
Page 40: ...HE910 Hardware User Guide 1VV0300925 Rev 32 Page 40 of 111 2019 11 25 ...
Page 71: ...HE910 Hardware User Guide 1VV0300925 Rev 32 Page 71 of 111 2019 11 25 ...
Page 111: ... 01 2017 Mod 0805 2017 01 Rev 6 ...
