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STCF02 Datasheet(PDF) 4 Page - STMicroelectronics |
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STCF02 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 19 page Pin connections STCF02 4/19 2 Pin connections Table 2. Pin description Figure 2. Pin configuration (bottom view) Pln N° Symbol Name and function Note 1 VLX2 Inductor connection External coil is connected between this pin and VLX1. It should be placed as close as possible to the device in order to minimize resistance which cause losses. 2 RX Rx Resistor connection Rx resistor is connected between this pin and ground to set LED over temperature threshold. 3 VO Output voltage Anode of the LED is connected to this pin. 4 NTC NTC Resistor connection This pin is used for the LED temperature sensing using an external NTC resistor. 5FB1 Feedback pin for torch mode This pin is used for current sensing in Torch mode – Cathode of the Flash LED and RTorch resistor are connected to this pin. 6RTBY RTORCH Bypass This pin is used to short-circuit the RTORCH during FLASH and MIDDLE FLASH MODE. 7FB2 Feedback pin for flash mode This pin is used to sense the voltage across RFLASH. It must be directly connected to the non-grounded terminal of RFLASH. 8, 10 GND Signal ground This is the signal ground pin related to digital and analog signals and must be connected as close as possible to the sensing resistor. 9COM1 Compensation connection Optional external compensation should be connected to these pins. 11 COM2 Compensation connection Optional external compensation should be connected to these pins. 12 VBAT Supply voltage Supply pin of the device. 13 PVBAT Power supply voltage Power supply pin of the device. 14 VLX1A Inductor connection External coil is connected between these pins and VLX2. They should be placed as close as possible to the device in order to minimize resistance which causes losses. It is mandatory to connect VLX1A and VLX1B together. 15 VLX1B 16 EN3 Enable Pin 3 Digital input that allows selection of the operational modes of the device (refer to truth table). 17 EN2 Enable Pin 2 Digital input that allows selection of the operational modes of the device (refer to truth table). |
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