HV9912NG-G Supertex, HV9912NG-G Datasheet
HV9912NG-G
Specifications of HV9912NG-G
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HV9912NG-G Summary of contents
Page 1
... The HV9912 includes hiccup protection from both short and open circuits, with automatic recovery after the fault condition is cleared. The HV9912 is a pin compatible replacement to Supertex’s HV9911 compatible with existing HV9911 designs which have an input voltage of less than 90V by changing R ...
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... UVLO V undervoltage lockout threshold RISE DD UVLO V undervoltage lockout hysteresis HYST DD ● Pin Configuration Package Option 16-Lead SOIC 9.90x3.90mm body 1.75mm height (max) 1.27mm pitch HV9912NG-G Value -0.5V to +100V -0.3V to +13.5V Product Marking -0. 0.3V) DD -0. 0.3V) DD -0. 0.3V) DD -0. 0.3V +25°C) ...
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... OVP falling 280 0 C < T < + 330 -40 C < T < +125 O A COMP = 200 ns DD LIM 600mV step SENSE COMP = 200 ns DD LIM 400mV step SENSE 10 mV --- - MHz 75pF capacitance at OP pin - dB Output open ● Tel: 408-222-8888 ● www.supertex.com HV9912 REF REF; = 300mV; ...
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... FDBK step from 0 to 900mV; FAULT goes from high to low 300 ns 330pF capacitor at FAULT pin 300 ns 330pF capacitor at FAULT pin 900 ns --- - µA --- 100 µA --- 2. 50µ SLOPE SC < +125 C are guaranteed by design and characterization ● Tel: 408-222-8888 ● www.supertex.com HV9912 = GND REF 400mA; = 1.0kΩ ...
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... IC if the voltage at the VDD pin falls below the UVLO threshold. 1235 Bordeaux Drive, Sunnyvale, CA 94089 rising 4.5V falling OVPD SCD One Shot PWMD GND ● Tel: 408-222-8888 ● www.supertex.com HV9912 REF GATE FAULT OVP SYNC RT ...
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... SYNC pin is considered fault tolerant 1235 Bordeaux Drive, Sunnyvale, CA 94089 6 is less than VIN . In such cases, the IC will oscil- STOP and GND will program the T sets the current which charges T T ≈ 18pF S T ● Tel: 408-222-8888 ● www.supertex.com HV9912 . STOP (Eqn. 3) ...
Page 7
... LEDs. This minimizes the effect of the capacitor on the PWM dimming response of the converter. However, in the case of a boost converter, the output current is dis- 1235 Bordeaux Drive, Sunnyvale, CA 94089 7 CLIM should be reduced till CS ● Tel: 408-222-8888 ● www.supertex.com HV9912 is greater than ...
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... HV9912 is 10μs. POR V IN POR Pull-up Pull-down Gm control with 5.0µA with 5.0µA 5.0V 1.0V t POR FLT t DELAY Fig. 2 Waveforms During Startup ● Tel: 408-222-8888 ● www.supertex.com HV9912 amplifier and M ), the start-up C (Eqn. 8) can Z < 100kΩ). The Z ...
Page 9
... Note that the number of hiccup cycles might be more than two. 1235 Bordeaux Drive, Sunnyvale, CA 94089 case of a persistent open circuit condition, this t ≈ 0 OVP1 OVP2 COMP t ≈ HICCUP1 C Z 5µ ≈ HICCUP2 5µA ● Tel: 408-222-8888 ● www.supertex.com HV9912 OVP1 (Eqn. 10) (Eqn. 11) (Eqn. 12) ...
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... LEDs. To get zero LED current, the PWMD input has to be pulled to GND. OVP ON LED string reconnects OVP OFF HICCUP1 Fig. 4 Open Circuit Protection 1235 Bordeaux Drive, Sunnyvale, CA 94089 10 LED string voltage t HICCUP2 ● Tel: 408-222-8888 ● www.supertex.com HV9912 ...
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... The voltage at this pin sets the output current level. The current reference can be set using a resistor 15 IREF divider from the REF pin. 16 FDBK This pin provides output current feedback to the HV9912 by using a current sense resistor. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 11 ● Tel: 408-222-8888 ● www.supertex.com HV9912 ...
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... JEDEC Registration MS-012, Variation AC, Issue E, Sept. 2005. * This dimension is not specified in the JEDEC drawing. Drawings are not to scale. Supertex Doc. #: DSPD-16SONG, Version G041309. (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives Supertex inc ...