Supertex inc.
Switch Dimmable
LED Driver
Features
General Description
HV9801A
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Four level switch dimming
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Very accurate current regulator
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Output over-current / short circuit protection
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IC over-temperature protection
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Available in 8L-SOIC and 16L-SOIC packages
The HV9801A LED driver is ideally suited for switch dimmable
applications using LED bulbs and fixtures.
Through switch dimming, the lamp can be adjusted to four
discrete brightness levels by rapid cycling of the light switch.
The brightness levels are traversed in up and down manner.
Brightness resumes at the highest level when power is
removed for more than a second.
The device can be powered directly from rectified AC through
an internal VDD regulator rated at 450V.
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Switch dimmable LED bulbs and fixtures
Applications
Typical Application Circuit
VIN
BUS
AC
L
VIN
GATE
HV9801A
CS
GND
VDD
RT
CDD
RT
RCS
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
SUPERTEX [ Supertex, Inc ]
