Yuga NB module hardware manual V1.01

LPM2100 mg NB module hardware manual
Shang Hai YUGE Information Technology co., LTD
Page
33
of
39
5.4 Power Supply
The input power requirements of the LPM2100 mg NB module are as follows:
Table 5-4 LPM2100 mg module working voltage
Parameter
Minimum
Typical
Maximum
Unit
VBAT
3.4
3.7
4.2
V
The power on any interface of the module must not be earlier than the boot time of the
module, otherwise it may cause the module to be abnormal or damaged.
5.5 Electrostatic characteristics
LPM2100 mg module without any overvoltage protection measures, the module needs to
use static electricity protection, to ensure product quality.
ESD design recommendations:
 The module's USIM pin needs to be protected by adding TVS.
 Add TVS at the module input power supply.
 The PCB wiring of protective devices should take the "V" shape line as far as possible so
as to avoid the "T" shape.
 Ensure the integrity of the module's surrounding ground plane and do not divide it.
 In the production, assembly and laboratory testing of modules, attention should be paid to
the surrounding environment and ESD control of operators.
Table 5-5 LPM2100 mg ESD characteristics
Test port
Contact discharge
Air discharge
unit
USIM interface
±4
±8
KV
VBAT power supply
±4
±8
KV
RF_ANT
±
4
±
8
KV
BT_ANT
±
4
±
8
KV
Other PORT
±4
±8
KV
5.6 Reliability index
Table 5-6 reliability test
Test project
Test conditions
Reference
standard
experimental result
Low
temperature
Temperature: - 20 C
Work mode: normal work
IEC60068
-2-1
Appearance check: normal
Functional examination: