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STCF07PNR 데이터시트(PDF) 10 Page - STMicroelectronics |
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STCF07PNR 데이터시트(HTML) 10 Page - STMicroelectronics |
10 / 26 page Introduction STCF07 10/26 Doc ID 16757 Rev 3 6 Introduction The STCF07 is a buck-boost converter designed to power and control the current of a power white LED. The device operates at a constant switching frequency of 1.8 MHz (typ). It provides an output voltage from 2.5 V up to 5.3 V, from a 2.7 V to 5.5 V supply voltage. This supply range allows the device to operate from a single-cell Lithium-Ion battery. The current is adjustable up to 1 A for an input voltage ranging from 2.7 V to 5.5 V and maximum output power up to 3.4 W. When the battery voltage is higher than 3.2 V, it is possible to increase the output power up to 4 W. The device uses an external NTC resistor to sense the temperature of the white LED. This function may not be needed in all applications, and in these cases the relevant external components can be omitted. |
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