General Description
The Supertex HV9906 allows the development of the smallest possible, most reliable, offline and wide DC/DC conversion range converters for driving LEDs and other applications. The HV9906 combines internally all the components required to operate directly from the rectified AC line with a feedback mechanism that eliminates filters & compensation components, and which can close the loop with feedback from a discontinuous waveform (eg. LED current).

FEATUREs
Drive one or hundreds of LEDs including White LEDs
Programmable Current Source (mA to A)
Programmable Voltage Source (Steps Up or Down)
Integrator Lock Loop Technology (IL2)
   o Built in Soft Start
   o Allows Discontinuous Feedback
   o Eliminates Compensation Components
   o Eliminates Output Averaging Filters
   o Inherent Dither to Reduce EMI
Eliminates High Voltage Input Electrolytic Capacitor
Smallest and Most Reliable Off-Line Solution
Isolated or Non-Isolated Applications
Can be Operated Directly from Rectified AC Mains
10V to 400V Input Range Internal Regulator
<1.5mA Operating Supply Current
Programmable Feed Forward Regulation
Programmable Feedback Sense Threshold (mV to V)
Integrating Differential Sense Feedback
Seamlessly Change from AC to Battery Operation

APPLICATIONs
LED driver
Power Factor Correction
Constant Current or Voltage Source
Battery Charger / PWM Housekeeping Supplies
Traffic Lights / Street Lights
Back Lighting of Flat Panel Displays
Advertising Signs
Automotive