WH-LTE-7S1-E Hardware Manual
Technical Support:
Jinan USR IOT Technology Limited
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7
3. Application Interfaces
3.1. Power Interface
WH-LTE-7S1-E supports DC 5~16V or DC 3.4~4.2V power supply.
3.1.1.DC 5~16V Power Supply
Connecting pins 13 and 14 with 5~16V power supply. When designing the product, please ensure that the
peripheral circuit can provide sufficient power supply capacity, and strictly control it within 5V ~ 16V. It is
recommended to add 220uF electrolytic capacitor at the front end of the pin interface to increase the stability
of the power supply. Reference circuits are as follows:
3.1.2.DC 3.4~4.2V Power Supply
Connecting pin 16 with 3.4-4.2V power supply (Recommend 3.8V, cannot exceed the range), please place a
large capacitor behind DC/DC or LDO to prevent the voltage drop of the external power supply during the
pulse current period. Bypass capacitors stabilize the input voltage.
Reference circuit is as follows: