buck boost converter.
* Efficiency: 87% at 500 mA and 3.3 V VIN
* Internal Synchronous Rectifier, No Schottky Diodes
* Adjustable Switching Limit Current to Optimize inductor size
.
such as driving high−powered white LED. The buck−boost is implemented in an H−bridge topology and has an adaptive archit.
Pin Name
Type
Description
1
FB
INPUT
Feedback: Reference voltage is 200 mV. The cathode of the LED and a resistor to ground to set the
LED current should be connected at this point. A "5% metal film resistor, or better, is recommended
for be.
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