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UB3846 Fiches technique(PDF) 2 Page - Unisonic Technologies

No de pièce UB3846
Description  LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
PDF  10 Pages
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Fabricant  UTC [Unisonic Technologies]
Site Internet  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UB3846 Fiches technique(HTML) 2 Page - Unisonic Technologies

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UB3846
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
2 of 10
www.unisonic.com.tw
QW-R103-053.C
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO.
PIN NAME
PIN TYPE
DESCRIPTION
1
GATE
O
The totem-pole output driver for driving the power MOSFET.
2
VDD
P
Power supply.
3
NC
NC pin.
4
SENSE
I
Current sense input pin. Connected to MOSFET current sensing resistor
node.
5
RI
I
A resistor connected between RI and GND sets switching frequency. A
100kΩ resistor RI results in a 70kHz switching frequency.
6
NC
NC pin.
7
FB
I
Feedback input pin. The PWM duty cycle is determined by voltage level
into this pin and SENSE pin input.
8
GND
P
Ground.



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