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UC3842BD1 Datasheet(PDF) 10 Page - STMicroelectronics |
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UC3842BD1 Datasheet(HTML) 10 Page - STMicroelectronics |
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10 / 15 page 
Figure 20 : Latched Shutdown. D95IN350 BIAS + - EA R + OSC 2N 3905 2N 3903 1mA R R 2R 1 2 8 4 SCR must be selected for a holding current of less than 0.5mA at TA(min). The simple two transistor circuit can be used in place of the SCR as shown. All resistors are 10K. 5 D95IN351 + - EA Ri + 1mA Rd R 2R 5 Cf Rf 1 2 From VO 2.5V + - EA RP + 1mA Rd R 2R 5 Cf Rf 1 2 From VO 2.5V Error Amp compensation circuit for stabilizing any current-mode topology except for boost and flyback converters operating with continuous inductor current. CP Ri Error Amp compensation circuit for stabilizing current-mode boost and flyback topologies operating with continuous inductor current. Figure 21: Error Amplifier Compensation UC2842B/3B/4B/5B - UC3842B/3B/4B/5B 10/15 |
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