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HV9903

Supertex Inc
Part Number HV9903
Manufacturer Supertex Inc
Description White LED Driver
Published Mar 26, 2005
Detailed Description HV9903 Initial Release White LED Driver Features ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Power efficiency of up to 85% Drives up to 6 W...
Datasheet PDF File HV9903 PDF File

HV9903
HV9903

Overview
HV9903 Initial Release White LED Driver 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 leakage current when disabled No leakage current path through LEDs when disabled Resistor-programmable LED Current Small 6-lead MLP (3mm x 3mm) package (similar to 6-pin SOT-23) Description 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 at lower voltages is possible as long as a 2.
6–4.
6V lowcurrent supply is available for the HV9903.
The device uses a single inductor and a minimum number of passive c...


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