HV9910 Supertex, HV9910 Datasheet
HV9910
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HV9910 Summary of contents
Page 1
... Signage and Decorative LED Lighting Automotive Chargers Typical Application Description The HV9910 is a PWM high-efficiency LED driver control IC. It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 8VDC up to 450VDC. The HV9910 controls an external MOSFET at fixed switching frequency up to 300kHz. The frequency can be programmed using a single resistor ...
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... V -0 100 0 150 215 HV9910 SO-8 HV9910LG Max Units Conditions 450 V DC input voltage 1 mA Pin PWM_D to GND 8–450V DD(ext) 8.0 V open When an external voltage applied 13 pin Vdd 1 8–100V IN 6.95 V Vin rising ...
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... A sufficient storage capacitor is used to provide storage when the rectified AC input is near the zero crossings. Linear Dimming by changing the current limit threshold at current sense comparator Oscillator control. A resistor connected between this pin and ground sets the PWM frequency. 3 HV9910 8-Pin DIP/SOIC 16-Pin SOIC C110504 ...
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... Optionally, a simple passive power factor correction circuit, consisting of 3 diodes and 2 capacitors, can be added as shown in the application circuit diagram of Figure 1. Supply Current A current of 1mA is needed to start the HV9910. As shown in block diagram, this current is internally generated in HV9910 without using bulky startup resistors applications. Moreover, in many applications the ...
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... It is not possible to use this method to achieve average brightness levels higher than the one set by the current sense threshold level of the HV9910. By using the PWM control method of the HV9910, the light output can be adjusted between zero and 100%. The accuracy ...
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... C should be rated for ½ of the input voltage and have twice as much capacitance. Enable The HV9910 can be turned off by pulling the PWM_D pin to ground. When disabled, the HV9910 draws quiescent current of less than 1mA. 1N4004 1N4004 1N4004 68µ ...
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... However, in the case of the buck-boost or the Flyback topology the HV9910 may cause excessive voltage stress of the switching transistor and the rectifier diode and potential failure. In this case, the HV9910 can be disabled by pulling the PMW_D pin to ground when the over voltage condition is detected. DC/DC Low Voltage Applications ...
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... Figure 2 - HV9910 Buck Driver for a single 900mA HB LED (V Figure 3 - HV9910 Buck-Boost driver powering 350mA HB LEDs (V C110504 Doc. #: DSFPHV9910 8 HV9910 = 8 – 30V – 30V ) IN IN C110504 ...
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PLASTIC DUAL IN-LINE PACKAGE (P) ± 0.015 0.250 ± 0.005 0.130 ± 0.005 0.125 min. 0.020 min. Note: C ircle (e. indicates eference. Doc. #: DSPD8PDP ©2004 S upertex Inc. All ...
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SMALL OUTLINE PACKAGE (LG, TG) (MS-012AA) H 0.236 ± 0.008 E (5.9944 ± 0.2032) 0.154 ± 0.004 (3.9116 ± 0.1016) 0.061 ± 0.008 A (1.5494 ± 0.2032 0.007 ± 0.003 (0.1778 ± 0.0762) Note: C ircle ...
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SO PACKAGE (NG) (NARROW BODY) 0.156 ± 0.002 E (3.962 ± 0.051) 0.500 (12.700) (8.890) 0.065 ± 0.004 (1.651 ± 0.102 0.020 ± 0.002 (0.508 ± 0.0508) (1.270) Note: C ircle (e.g. ...