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UC3842G 数据表(PDF) 7 Page - Unisonic Technologies |
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UC3842G 数据表(HTML) 7 Page - Unisonic Technologies |
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7 / 8 page  UC3842G LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 7 of 8 www.unisonic.com.tw QW-R103-036.C CURRENT SENSE CIRCUIT 5 3 1 2R R1V C Rs R Is Error Amplifier 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 Pin 1. 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 22KHz. 2.2V 1.2V Standby mode Minimum frequency :14KHz Normal Frequency: 52KHz Normal Frequency: 52KHz VCOMP Increase OSC triangle wave |
类似零件编号 - UC3842G |
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类似说明 - UC3842G |
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