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UC3842BP-S08-R Fiches technique(PDF) 7 Page - Unisonic Technologies

No de pièce UC3842BP-S08-R
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
PDF  10 Pages
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Fabricant  UTC [Unisonic Technologies]
Site Internet  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3842BP-S08-R Fiches technique(HTML) 7 Page - Unisonic Technologies

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UC3842B/3843B
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
7 of 10
www.unisonic.com.tw
QW-R103-012.E
APPLICATION INFORMATION(Cont.)
Shutdown Techniques
8
3
(Deadtime vs CT RT > 5kΩ)
SHUTDOWN
330Ω
500Ω
TO CURRENT
SENSE-RESISTOR
1KΩ
VREF
ISENSE
SHUTDOWN
1
COMP
The UTC UC3842B’s shutdown can be accomplished by two ways: raise Pin 3 above 1V; or pull Pin 1 below a
voltage two diode drops above ground. Either method can cause the PWM comparator’s output to be high. Because
the PWM latch is reset dominant, the output will remain low until the next clock cycle after the shutdown condition at
Pins 1 and/or 3 is removed.
Slope Compensation



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