User Manual

Smart Machine Smart Decision
SIM7100_Hardware_Design_V1.02 2015-06-16
3.14.3 LDO
SIM7100 has a LDO power output, named VDD_EXT. its output voltage is 0V by default, Users
can switch the LDO on or off by the AT command “AT+CVAUXS” and configure its output voltage
by the AT command “AT+CVAUXV”.
Table 23: Electronic characteristic
Symbol Description Min. Typ. Max. Unit
V
VDD_EXT
Output voltage 1.7 2.95 3.05 V
I
O
Output current - - 150 mA
Note ： For more details of AT commands about VDD_EXT, please refer to document [1].