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VPN12AD02-FU Scheda tecnica(PDF) 12 Page - Cyntec Co., Ltd.

Il numero della parte VPN12AD02-FU
Spiegazioni elettronici  Buck-Boost, High Efficiency POL Module
PDF  22 Pages
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Produttore elettronici  CYNTEC [Cyntec Co., Ltd.]
Homepage  http://www.cyntec.com/
Logo CYNTEC - Cyntec Co., Ltd.

VPN12AD02-FU Scheda tecnica(HTML) 12 Page - Cyntec Co., Ltd.

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Rev. P05
12
VPN12AD02-FU
Switching Frequency Setup:
The switching frequency can be set from 200 kHz to 400 kHz by an external resistor connected
from the FREQ pin to GND. Select the switching frequency according to the following
approximate formulas.
46023
FSW[kHz]
(
)
1.25
RFREQ[kΩ] =
.
FIG.27 Switching Frequency vs Frequency Select Resistor.
LED Constant Current Setting in Constant Current Mode
VFBH-FBL typical value is 150mV. Set the LED current with an external resistor according to the
following approximate formulas.
ILED = VFBH-FBL
RCS
VOUT
RCS
GND
FBL
FBH
ILED
FIG.28 Current Setting in Constant Current Mode



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