Yuga CLM920 TE5 LTE Module Hardware Manual

CLM920_TE5 LTE Module Hardware Manual
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YUGA Information Technology Co.,Ltd
 VDD_EXT for 1.8V output supply;
3.3.1 Power Design
CLM920_TE5 module power interface is as follows:
Table 3- 2 Power pin definitions
Pin
Name
I/O
Description
Min
voltage
Typical
voltage
Max
voltage
2,24,39,41
,52
VBAT
PI
Module power
supply
3.4V
3.7V
4.2V
8
UIM_PWR
PO
SIM power
supply
0
1.8V/2.85V
1.9/2.95V
17
VDD_EXT
PO
Output power
1.8V
4,9,15,18,
21,26,27,2
9,34,35,37
,40,43,50
GND
Ground
-
0
-
CLM920_TE5 module with single power supply mode, the module provides 5-way power
supply pin, with 14-pin GND. VBAT power supply range of 3.3-4.2V, the recommended
power supply is 3.7V / 2A . The module’s peak current will reach 2.5A when transmit data
or call under HSPA/UTMS/GSM, which resulting in a large ripple on the power. If instant
voltage drop makes the VBAT power too low or the current supply insufficient, the
module will power off or restart. To ensure that the module works properly, all power and
ground pins should be connected to use and able to provide enough power supply.
Figure 3- 3 GSM TDMA Power Supply Voltage Drop
On the premise of the VBAT can provide enough power, connect two 470uF/6.3V
tantalum capacitors in parallel near to the power, also connect another 10pF, 33pF,
577us
VBAT
4.615ms
Max
Burst
Ibat