LPM2100 bg NB Module Hardware Usage Guide
Shanghai Yuge Information Technology Co., Ltd.
- 33 -
bg/bc(Vbat)
Module operating voltage
（
3.1~4.2V
）
3.1V
3.7V
4.2V
bg_u(Vbat)
Module operating voltage
（
2.45~4.2V
）
2.45V
3.6V
4.2V
The power-on time of any interface of the module must not be earlier than the boot time
of the module, otherwise the module may be abnormal or damaged.
5.5 Electrostatic property
There is no overvoltage protection inside the LPM2100 bg series module. The module
needs to protect against static electricity to ensure product quality.
ESD design recommendations
：
The SIM card external pin of the module needs to be protected by adding TVS.
At the module input power supply, increase the TVS.
The protective device PCB layout should be as close as possible to the
“
V
”
shaped line
to avoid the
“
T
”
shaped line.
The ground plane around the module guarantees integrity and should not be split.
ESD control of the surrounding environment and operators needs to be paid during
module production, assembly and laboratory testing.
Table 5-4 LPM2100 bg ESD features
Test port
Contact discharge
Air discharge
Unit
SIM interface
±
6
±
10
KV
VBAT power supply
±
6
±
10
KV
RF_ANT
±
6
±
10
KV
Other PORT
±
6
±
10
KV
5.6 Reliability index
Table 5-5 Reliability test
Test items
Test Conditions
Guideline Experimental result
Low
temperature
work
Temperature:
–
20
℃
Working mode: normal work
Test duration: 24 h
IEC60068-
2-1
Visual inspection: normal
Function check: normal
RF indicator check: normal
High
temperature
Temperature: 75
℃
Working mode: normal work
JESD22-A
108-C
Visual inspection: normal
Function check: normal
