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HV9911 Datasheet(PDF) 5 Page - Supertex, Inc |
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HV9911 Datasheet(HTML) 5 Page - Supertex, Inc |
5 / 14 page 5 HV9911 T DELAY2 Delay to output of C LIMIT comparator - - 180 ns COMP = V DD ; CLIM = 300mV ; V CS = 0 to 400mV step V OFFSET Comparator offset voltage -10 - 10 mV --- Internal Transconductance Opamp GB Gain bandwidth product# - 1.0 - MHz 75pF capacitance at COMP pin A V Open loop DC gain 66 - - dB Output Open V CM Input common-mode range# -0.3 - 3.0 V --- V O Output voltage range# 0.7 - 6.75 - V DD = 7.75V g m Transconductance 340 435 530 µA/V --- V OFFSET Input offset voltage -2.0 - 4.0 mV --- I BIAS Input bias current# - 0.5 1.0 nA --- Oscillator f OSC1 Oscillator frequency* 88 100 112 kHz R T = 909kΩ f OSC2 Oscillator frequency* 308 350 392 kHz R T = 261kΩ D MAX Maximum duty cycle - 90 - % --- I OUTSYNC Sync output current - 10 20 µA --- I INSYNC Sync input current 0 - 200 µA V SYNC < 0.1V Output Short Circuit T OFF Propagation time for short circuit detection - - 250 ns I REF = 200mV ; FDBK = 450mV; FAULT goes from high to low T RISE,FAULT Fault output rise time - - 300 ns 1nF capacitor at FAULT pin T FALL,FAULT Fault output fall time - - 200 ns 1nF capacitor at FAULT pin G FAULT Amplifier gain at I REF pin 1.8 2 2.2 I REF = 200mV Soft Start I CLIM Current into C LIM pin when pulled low - - 200 µA FAULT is low ; 06.25k resistor between REF and C LIM Slope Compensation I SLOPE Current sourced out of SC pin 0 - 100 µA --- G SLOPE Internal current mirror ratio 1.8 2 2.2 - I SLOPE = 50µA ; RCSENSE = 1kΩ 1 See application section for minimum input voltage. 2 Parameters are not guaranteed to be within specifications if the external V DD voltage is greater than VDD(ext) or if V DD < 7.25V. * Specifications which apply over the full operating ambient temperature range of -40°C < T A < +85°C. # Guaranteed by design. Symbol Parameter Min Typ Max Units Conditions |
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