HV9801A Datasheet, PDF (1/9 Pages) Supertex, Inc – Switch Dimmable LED Driver

Supertex inc.
Switch Dimmable
LED Driver
HV9801A
Features
►► Four level switch dimming
►► Very accurate current regulator
►► Output over-current / short circuit protection
►► IC over-temperature protection
►► Available in 8L-SOIC and 16L-SOIC packages
Applications
►► Switch dimmable LED bulbs and fixtures
General Description
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.
Typical Application Circuit
VIN
BUS
AC
L
VIN
GATE
HV9801A
GND
VDD
CS
RT
CDD
RT
RCS
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: [phone] ● www.supertex.com