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Electronic Components Datasheet Search |
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FSD1000 Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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FSD1000 Datasheet(HTML) 2 Page - Fairchild Semiconductor |
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FSD1000 2 Internal Block Diagram Figure 2. Functional Block Diagram of FSD1000 5 6 1 11 Vref Internal Bias S Q Q R OSC I delay I FB S Q Q R R Vcc V FB,AUX Isense Gate drive 12 Vstr I ch Vcc good Soft Start (10ms) 4Output 9.5/13.5V 21V Vcc OVP 8 I delay I FB 2V FB.MAIN Vcc Vcc Power off Reset (Vcc <6V) OTP Line OVP Vcc OVP 9 S Q Q R Gate drive Burst R Q Q S Auto restart Latch Counter /4 Burst Aux OLP 7 Line OVP Aux OFF 3 OSC 7V S/S LS2 Drain GND I LIM LS1 0.8 V 1.0 V 1.4 V 1.68 V Main OFF 4.4 V 2.4 V 2.0 V PWM Comparator 0.5 V 0.7 V 4.5V R 3R Vcc Vref Vref Main OLP Vcc good 1:110 0.3V Vcc good Vcc good time delay (30ms) Main OLP Vth H : Dmain < 0.67 L : Dmain < 0.50 I SS |
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