STCF07 Datasheet, PDF (10/26 Pages) STMicroelectronics – High power buck-boost white LED driver

Introduction
6
Introduction
STCF07
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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Doc ID 16757 Rev 3