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UC2845B Datasheet(PDF) 8 Page - STMicroelectronics |
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UC2845B Datasheet(HTML) 8 Page - STMicroelectronics |
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8 / 15 page 
Figure 15 : Error Amp Configuration. Zi Zf 1mA 2 1 VFB COMP 2.5V D95IN345 + - Figure 16 : Under Voltage Lockout. UC3842B UC3844B UC3843B UC3845B 16V 8.4V 10V 7.6V VON VOFF Vi ON/OFF COMMAND TO REST OF IC 7 <0.5mA <17mA ICC VCC VOFF VON D95IN346 Figure 17 : Current Sense Circuit . ERROR AMPL. 2R R1V CURRENT SENSE COMPARATOR 1 CURRENT SENSE COMP C RS R 3 5 GND IS D95IN347 Peak current (is) is determined by the formula 1.0 V IS max ≈ RS A small RC filter may be required to suppress switch transients. During UVLO, the Output is low UC2842B/3B/4B/5B - UC3842B/3B/4B/5B 8/15 |
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