HV9903 Datasheet - Supertex Inc

HV9903 White LED Driver

The Supertex HV9903 is a fixed frequency DC-DC boost converter designed for driving Light Emitting Diodes (LEDs) with constant current where the light intensity is proportional to the current through them. The input supply voltage range into the device (VDD) is 2.6 to 4.6V. Operation of the driver a.

HV9903 Features

* ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Power efficiency of up to 85% Drives up to 6 White LEDs 2.6V to 4.6V Supply power stage can operate at 1.8V (see page 8) Built-in Soft Start DC and PWM Dimming Control Built-in Open LED protection Open LED indicator (via RSET) 1.2MHz Fixed Switching Frequency 500nA max leakag

HV9903_SupertexInc.pdf