HW User Guide
1vv0301018 Rev. 15
Page
23
of
72
2019-01-07
6. 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 performance, hence read the
requirements carefully 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
fulfill 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 complete
assumption and application of the HW User guide suggestions.
NOTE:
When the power supply voltage is between 3.22V and 3.4V, after 5000 m-
seconds, the V_AUX / PWRMON pin will be at the high logic level and the
module can be consider fully operating. See Par. 5.1.
Содержание GL865 V3
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