User's Manual

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L816-AM Hardware User Manual Page
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3.2 Power Supply
The power interface for L816-AM module is as follows:
Pin
Pin Name
I/O
Pin Description
DC Parameters （V）
Minimum
Value
Typical
Value
Maximum
Value
45
VBAT_BB
PI
Power input to BB
3.3
3.8
4.5
46
VBAT_PA
PI
Power input to RF PA
DC-DC
3.3
3.8
4.5
47
VBAT_PA
PI
Power input to RF PA
DC-DC
3.3
3.8
4.5
48
VBAT_TR
PI
Power input to
transceiver
3.3
3.8
4.5
15
VBUS
PI
USB power supply
2.0
3.8
5.25
20
VSIM1
PO
SIM1 power supply
1.8V/3V
3.2.1 Power Supply
The L816-AM module should be powered through the VBAT pins, and the power supply design is shown
in Figure 3-2:
Figure 3-2 Power Supply Design