Integration Manual

TSD-19090601 - R15 Contents Page 30 of 143
ACTIVE M ODE
2G case: 0 .44-2.09 s
3G case: 0 .61-5.09 s
LTE case: 0.32-2.56 s
Paging period
Time
[s]
Current [mA]
Time
[ms]
Current [mA]
RX
Enabled
0
100
200
0
100
200
Figure 9: VCC current consumption profile with low power mode disabled and module registered with the network: active mode
is always held and the receiver is periodically activated to monitor the paging channel for paging block reception
1.5.2 Generic digital interfaces supply output (V_INT)
The V_INT output pin of the TOBY-L3 series modules is connected to an internal 1.8 V supply. This supply
is internally generated by a switching step-down regulator integrated in the Power Management Unit and
it is internally used to source the generic digital I/O interfaces of the cellular module, as shown in Figure 1.
The output of this regulator is enabled when the module is switched on and it is disabled when the module
is switched off.
Baseband
Processor
70
VCC
71
VCC
72
VCC
5
V_INT
Switching
Step-Down
Power
Management
TOBY-L3 series
Digital I/O
Figure 1: TOBY-L3 series generic digital interfaces supply output (V_INT) simplified block diagram