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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UM2777 датащи(PDF) 13 Page - STMicroelectronics |
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UM2777 датащи(HTML) 13 Page - STMicroelectronics |
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13 / 44 page  2.3.1 Battery connectors The battery supply voltage (VBAT) may be provided by connecting the 480 mA LiPo battery included in the STWIN kit to the dedicated battery connector, or by supplying an external voltage through the J4 connector. Figure 14. Battery and J4 connectors for VBAT supply 3 2 1 2 1 VBAT GND 2.3.2 Power supply The STWIN core system board can receive power from different sources: • V_USB: through micro USB connector [5 V] • Vin: through J5 connector [4.8-5.5 V]. The current on this port needs to be limited to 2 A • VBAT: lithium ion polymer battery (3.7 V, 480 mAh), STBC02 battery charger integrated in the board The battery is always optional. The STBC02 battery charger automatically checks the available power inputs and selects one to power the system. When the battery is connected as well as one of the other sources, the STBC02 automatically charges the battery. When battery-powered, the equipment is intended to work properly with an operating temperature of 35°C. Without the battery, the equipment is intended to work properly with an operating temperature of 45°C. Figure 15. Power circuits STWIN core system board USB 3V3 DCDC U14 CN3 (Wi-Fi) STSAFE 5V SYS (5V or VBAT) CN2 (AMicArray) CN2 CN1 VBAT J5 STBC02 Battery Charger Analog Mic OpAmp U10 2.7 LDO DCDC_1 DCDC_2 3V3_Ext U16 3V3 DCDC VEXT J3 µSDCard RS485 SYS V_USB 5V STM32L4+ Sensors Bluetooth low energy UM2777 Power management UM2777 - Rev 4 page 13/44 |
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