Power Reference Circuit - YUGE CLM920 TD3 Usage Manual

CLM920 TD3 LTE Module Hardware Usage Guide
all power pins and ground pins must be connected and provide sufficient power supply
capability.
Figure 3-2 GSM TDMA network burst current supply voltage drop
Under the premise of ensuring that the VBAT power supply is sufficient, two
470uF/6.3V tantalum capacitors can be connected in parallel with the power input, and then
10pF, 33pF, 0.1uF, 1uF ceramic capacitors can be connected.

3.3.2 Power reference circuit

The actual design of the power circuit can use a switching DC power supply or a linear
LDO power supply to design the VBAT power supply. Both design circuits need to supply
enough current. Specific reference to the following circuit design：
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Figure 3-3 VBAT power supply
Figure 3-4 LDO linear power supply reference circuit
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