Users Manual
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The recommended circuit diagram of USBOTG is as follows:
Figure 4.27: USB-OTG Connection Diagram
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The USB_VBUS power supply is a USB power supply or an adapter power supply. It can be used as a USB plug-in
detection and charge the battery through the internal PMU of the module. The power input voltage range is
4.35~6.3V, and the recommended value is 5V. The module supports single-cell lithium battery charge management,
and different capacity models need to set different charging parameters. The module's built-in linear charging circuit
supports up to 1.44A of charging current.
Figure 4.28: Battery connection diagram
The SLM756 module can charge the over-discharged battery. The charging process includes trickle charge, constant
current, and constant voltage charging.
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