CL320 Datasheet PDF - Supertex Inc

General Description
The CL320 is designed to drive 3 strings of LEDs at a constant current of 20mA.
Other drivers with currents in the range of 20 - 30mA are available. The drive current is fi xed, with a ±6% tolerance over a VOUT range of 4 - 15V.
Separate enable pins for each channel allow for PWM dimming, 3-step linear dimming, or individual disconnection of faulty LED strings.
Over-temperature protection circuitry shuts down all 3 channels when the nominal die temperature reaches 135°C. Normal operation resumes when the die temperature drops by 30°C.
The CL320 is available in the 8-Lead SOIC (w/Heat Slug) package and requires a single ceramic bypass capacitor which may be shared among several drivers.

FEATUREs
► ±6% current accuracy @ 4.0 -15V
► 90V standoff voltage
► Separate enable pins for each channel allow for PWM dimming
► Over-temperature protection
► 8-Lead SOIC (w/Heat Slug) package

APPLICATIONs
► LCD backlighting
► Indicator lamps