ST ST7260E2, Руководство пользователя

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Using the charger in standalone mode UM0497
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4 Using the charger in standalone mode
You can use the charger available in this evaluation board in standalone mode as well. In
standalone, it provides an option of developing a low-cost battery charger which is capable
of charging a single cell Li-ion battery from a 5 V power supply.
To use this evaluation board in standalone mode, do the following steps:
1. Select the external power supply (5 V, 1 A) by connecting the positive pin of this supply
to pin 2 of jumper JP16 (see
Section 1.2.7 ) and the negative pin to ground (see
Figure 11: Schematic ).
2. Remove jumpers JP1, JP3, JP12, JP13, JP14 and JP15 to isolate the USB controller.
3. Connect the SHDN_CHG pin (pin 2 of JP15) to VBUS (pin 2 of JP16) to enable the
charger operation (see
Figure 11: Schematic ).
The charger is now enabled and ready to be used in standalone mode.
If you connect the battery as mentioned in Section 2.2 , then its presence is detected within a
few seconds and the charging operation starts.
Again as mentioned in Section 2.3 , LED8 and LED9 are used to show the charging status.