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