Introduction

STCF07

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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.