VPN12AD02-FU datasheet(12/22 Pages) CYNTEC

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VPN12AD02-FU Arkusz danych(PDF) 12 Page - Cyntec Co., Ltd.

Numer części	VPN12AD02-FU

Szczegółowy opis	Buck-Boost, High Efficiency POL Module

PDF	22 Pages

Scroll/Zoom	100%

Producent	CYNTEC [Cyntec Co., Ltd.]

Strona internetowa	http://www.cyntec.com/

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12 / 22 page

Rev. P05

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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