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HV300LG Datasheet(PDF) 3 Page - Supertex, Inc |
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HV300LG Datasheet(HTML) 3 Page - Supertex, Inc |
3 / 6 page 3 HV300/HV310 Timing Diagrams Absolute Maximum Ratings VEE reference to VDD pin +0.3V to -100V VPWRGD referenced to VEE Voltage -0.3V to +100V Operating Ambient Temperature Range -40°C to +85°C Operating Junction Temperature Range -40°C to +125°C Storage Temperature Range -65°C to +150°C UV & OV ref to V EE -0.3V to +12V V INT is the internally regulated supply voltage and can range from 9V to 11V. V GS(th) is the gate threshold voltage of the external pass transistor and may be obtained from its datasheet. VGS(lim) is the pass transistor gate-source voltage required to obtain the limit curent. It is dependent on the pass transistor’s characteristics and may be obtained from the transfer characteristics curves on the transistor datasheet. gfs is the transconductance of the pass transistor and may be obtained from its datasheet. R FB is the internal feedback resistor and is 5kΩ nominal. I V R tV C I tV C I tt t t C g I I R R tV C I t tV V V C I LIM SENSE SENSE START RAMP RAMP TH GS th RAMP RAMP POR START TH RISE RAMP fs RAMP LIM SENSE FB LIM IN LOAD LIM RISE PWRGD INT GS RAMP RAMP = = = =+ ≈ − ≈− = −− () 12 09 1 2 12 . . . () (lim) GND -48V VIN IIN t START contact bounce I LIM PWRGD V UVL t RISE t PWRGD VGATE Initialization Limiting Full On V GATE VOUT t LIM t TH VRAMP V RAMP V GATE inactive active V OUT V IN V GS(th) V GS(lim) V EE t POR 90% |
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