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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SCY99080CDWR2G датащи(PDF) 3 Page - ON Semiconductor |
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SCY99080CDWR2G датащи(HTML) 3 Page - ON Semiconductor |
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3 / 27 page  DDA002C http://onsemi.com 3 Pin Function Description Pin No. Pin Name Function Pin Description 1 BO Brown−out Detects low input voltage conditions and stops the controller. An internal current source sets the hysteresis. 2 CIG Warm−up time A capacitor connected to ground sets the pre−heat time for ballast applica- tions. 3 DGS Synchronous output clamp A resistor connected between this pin and ground adjusts the maximum on− time available on Lgs and Hgs pins. 4 SS Soft−start Monitors the soft−start capacitor voltage to recognize end of the soft−start period, discharges the soft−start capacitor during any IC restart. 5 R_Fmin Minimum frequency resistor Connecting a resistor between this pin and ground, sets the minimum oscil- lator frequency reached for VFB ≥ 5.1 V 6 R_Fmax Maximum frequency resistor A resistor connected between this pin and ground sets the maximum fre- quency excursion reached for VFB ≤ 1.2 V 7 FB Optocoupler connection An optocoupler connected (by collector) between this pin and ground (by emitter) changes the converter operating frequency. The switching frequency increases when optocoupler pulls the FB pin down to ground. 8 OTP_latch OTP latch input If the voltage on this pin decreases below 1.5 V, the circuit latches off. This pin sources 170 mA current so an NTC resistor can be connected directly to this pin. 9 DT Dead time A resistor connected between this pin and ground sets the deadtime between drivers. 10 EN1 Enable input 1 When the voltage level on this pin exceeds a reference level for more than 50 ms, all pulses are stopped and the circuit permanently latches off. 11 EN2 Enable input 2 When the voltage level on this pin exceeds a reference voltage, the circuit stops pulsing. The IC auto−restarts via full startup sequence (PFC delay, pre−heat, soft−start) when EN2 is released. 12 Lgs Lower gate signal Duplicates the lower gate signal for synchronization purposes. On time is limited based on the Rdgs resistor value. 13 Hgs Upper gate signal Duplicates the upper gate signal for synchronization purposes. On time is limited based on the Rdgs resistor value. 14 GND Ground The controller ground 15 Lgd Low−side driver Drives the low−side half−bridge MOSFET 16 Vcc Controller Supply Energizing the controller. This pin accepts voltage up to 20 Vdc 17 HB Half−Bridge Connects to the half−bridge output 18 Hgd High−side driver Drives the high−side half−bridge MOSFET 19 Boot High side driver supply line This pin supplies the internal high−side driver |
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