Fibocom L830-EB User Manual

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L830-EB Hardware User Manual Page 15 of 39
Pin
Pin Name
I/O
Pin Description
DC Parameter
（
V
）
Minimum
Value
Typical
Value
Maximum
Value
2,4,70,72,74
+3.3V
PI
Power supply input
3.135
3.3
4.4
36
UIM_PWR
PO
USIM power supply
1.8V/3V
3.2.1 Power Supply
The L830 module should be powered through the +3.3V pins, and the power supply design is shown in
Figure 3-2:
Figure 3-2 Power Supply Design
The filter capacitor design for power supply as shown in the following table:
Recommended
capacitance
Application
Description
220uF x 2
Voltage-stabilizing capacitors
Reduce power fluctuations of the module in
operation, requiring capacitors with low ESR.
 LDO or DC/DC power supply requires the
capacitor of no less than 220uF
 The capacitor for battery power supply
can be reduced to 100uF
1uF,100nF
Digital signal noise
Filter out the interference generated from the
clock and digital signals
39pF,33pF
700/800, 850/900 MHz
frequency band
Filter out low frequency band RF interference
18pF,8.2pF,6.8pF
1800,2100,2600MHz frequency
band
Filter out medium/high frequency band RF
interference
The stable power supply can ensure the normal operation of L830 module; and the ripple of the power
supply should be less than 300mV in design. When the module operates with the maximum emission

Fibocom L830-EB Specifications

General

Category	Computer Hardware
Manufacturer	Fibocom
Model	L830-EB
Form Factor	M.2
Operating Temperature	-10°C to +55°C
LTE Bands	B1/B3/B5/B7/B8/B20
3G Bands	B1/B5/B8
Data Rate	LTE Cat4: 150Mbps DL / 50Mbps UL
Interface	PCIe, USB 2.0
Operating Voltage	3.135V to 4.4V