HV9930 Supertex, Inc., HV9930 Datasheet
HV9930
Related parts for HV9930
HV9930 Summary of contents
Page 1
... PWM dimming input that can accept an external control signal with a duty cycle 100% and a high dimming ratio. The HV9930 based LED driver is ideal for LED lamps and RGB backlight applications with low voltage DC inputs. The HV9930 based LED Lamp drivers can achieve effi ciency in excess of 80% ...
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... LLLL = “Green” Packaging 8-Lead SOIC (LG) < +85°C, otherwise the specifi cations are at A Units Conditions V DC input voltage mA PWMD connected to GND 200V GATE open IN DD(ext 200V rising IN mV --- V --- HV9930 REF CS2 VDD PWMD = 12V IN ...
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... HV9930 Units Conditions REF bypassed with a 0.1µF capacitor V to GND 7V, PWMD = 5V REF DD REF bypassed with a 0.1µF capacitor mV to GND -12V, PWMD REF REF bypassed with a 0.1µF capacitor ...
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... In case of input transients that reduce the input voltage be- low 8.0V (like cold crank condition in an automotive system), the VIN pin of the HV9930 can be connected to the drain of the MOSFET through a diode. Since the drain of the FET voltage equal to the sum of the input and output voltag- es, the IC will still be operational when the input goes below 8 ...
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... Design and Operation of the Boost-Buck Con- verter For details on the design for a Boost-Buck converter using the HV9930 and the calculation of the damping components, please refer to Application Notes AN-H51 and AN-H58. Design Example The choice of the resistor dividers to set the input and output current levels is illustrated by means of the design example given below ...
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... CS1 RCS1 Choose the following values for the resistors parallel combination of three 0.68Ω, 1/2W, 5% (6) CS1 R = 10kΩ, 1/8W, 1% REF1 R = 4.42kΩ, 1/8W 120Ω S2A = 2.1A and Δ 0.442 1.0W IN,LIM CS1 HV9930 /R ratio, REF2 = 0.63A in (1) ...
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... This dimension is not specifi the original JEDEC drawing. The value listed is for reference only. Drawings are not to scale. (The package drawing(s) in this data sheet may not refl ect the most current specifi cations. For the latest package outline information go to http://www.supertex.com/packaging.html.) Doc.# DSFP-HV9930 B042408 E E1 ...