8
UIM_PWR
PO
SIM power
0
1.8/2.85
1.98/3.3
4/9/15/18/21/26/27/29/34
/35/37/40/43/50
GND
PI
GND
0
The module uses a single power supply mode, the module provides 5-way power supply pin,
14-way ground pin to ensure the module
’s normal operation, all power and ground pins should
be connected and get in use. The module power supply range is 3.3 - 4.2V, and it is
recommended to use 3.7V/2A power supply. Module in the transmission of data or instant call
will produce more than 2A peak current
and it’s resulting in a larger power supply ripple, so the
customer
’s circuit design of power line should be as short as possible and wide enough. It is
recommended to reserve a 220uF capacitors near the power input. It is recommended that
customers can use DCDC or LDO
to provide enough current. Then the VBAT is controlled by the MOS tube so that the module
can be completely switched off.
LDO Reference power circuit
DCDC Reference power circuit
MOS tube control power switch reference circuit
NOTE:
