UC3842GP-D08-T View Datasheet(PDF) - Unisonic Technologies
Part Name
Description
Manufacturer
UC3842GP-D08-T Datasheet PDF : 8 Pages
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UC3842G
CURRENT SENSE CIRCUIT
Is
1
R
3
Rs
C
5
Error Amplifier
2R
R
LINEAR INTEGRATED CIRCUIT
1V
Current Sense Comparator
Peak current (IS) determined by the formula: ISMAX=1V/Rs. A small RC filter be required to suppress switch
transients
OSCILLATOR AND STANDBY MODE
We can judge the state of output load through the voltage of PIN1. In order to reduce the standby power, it will
reduce the OSC frequency at right load. When VCOMP≤2.2V, the OSC frequency begins to reduce. The normal
frequency is 52KHz, the minimum frequency is 14KHz.
VCOMP
2.2V
Increase
Normal
Frequency: 52KHz
Standby mode
Minimum frequency :14KHz
OSC triangle wave
1.2V
Normal
Frequency: 52KHz
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 8
QW-R103-036.B
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