YB1521 Datasheet, PDF (8/9 Pages) YOBON TECHNOLOGIES,INC. – High Power Step-Up DC-DC Converter & WLED Driver

YB1521
High Power Step-Up DC-DC Converter & WLED Driver
Schottky diode large than the output
voltage.
Capacitor Selection
Choose low ESR capacitors for the output
to minimize output voltage ripple. The
ceramic capacitor is a good choice for this
as well. A 4.7µF output capacitor is
sufficient for most applications. For
applications desire a smaller output
capacitance, a 2.2µF may be used. A 4.7µF
ceramic capacitor is recommended for the
input capacitance in the real system.
PCB Layout Consideration
Proper layout of the high frequency
switching path is critical to prevent from
noise and electromagnetic interference
problems. Due to high frequency switching,
the length and area of all the traces
connected to the switch node should be
minimized.
YB1521 MRev.1.1
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