HV9912DB1 Supertex, HV9912DB1 Datasheet
HV9912DB1
Specifications of HV9912DB1
Related parts for HV9912DB1
HV9912DB1 Summary of contents
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... High Brightness Boost LED Driver Demoboard with 1:3000 Dimming Ratio and Hiccup Mode Protection General Description The HV9912DB1 is an LED driver demoboard capable of driving one-watt LEDs in series from an input 27VDC. It uses the Supertex HV9912 in a boost topology. The converter has very good initial regulation (+/-5%) and excellent line and load regulation over the entire input and output voltage range (< ...
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... LED current reaches steady state, unplug one end of the LED string from the demoboard. The output voltage will rise to about 92V and the HV9912DB1 will shut down. Once the LED string is reconnected, the driver will start regulating current. ...
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... HV9912DB1. In Fig. 8, the onset of the output short circuit is indicated by the first . Once the output volt- spike in the LED current. At this point, the HV9912DB1 shuts DD down and the hiccup mode protection takes over. A constant current source charges the COMP pin to 5.0V and then an- other current source discharges ...
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... Fig. 9 shows the recovery of the HV9912DB1 from a short circuit condition. It can be seen that the LED current recov- ers normally with no overshoots. 6. PWM Dimming: The rise and fall transitions of the LED current during PWM dimming are shown in Figs. 10 and 11, PWM dimming input ...
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... Circuit Schematic: ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 5 HV9912DB1 ● Tel: 408-222-8888 ● www.supertex.com ...
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... SMD0805 Yageo SMD0805 Yageo SMD0805 Yageo SMD1206 Yageo SMD0805 Yageo SMD0805 Yageo SMD0805 Panasonic SO-16 Supertex 1235 Bordeaux Drive, Sunnyvale, CA 94089 6 HV9912DB1 Manufacturer’s Part Number C3225X7R1H225K B32522C1105J C2012X7R1C105K GRM219R71C104KA01D C2012C0G1H222J C2012C0G1H682J C2012X7R1H103K B1100-13 S2B-EH S4B-EH CDRH127/LDNP-221MC FDS3692 TN2510N8 RC0805FR-07866KL RC0805FR-07280KL ...