CL320

CL320 3-Channel 20mA Linear LED Driver Features ► ±6% current accuracy @ 4.0 -15V ► 90V standoff voltage ► Separate enable pins for each channel allow for PWM dimming www.DataSheet4U.com ► Over-temperature protection ► 8-Lead SOIC (w/Heat Slug) package 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 fixed, 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. Applications ► LCD backlighting ► Indicator lamps Block Diagram and Typical Application Circuit 6.5 - 90V CIN 100nF 8 7 6 5 VIN OUT1 VDD OUT2 OUT3 REG Host Controller 1 2 3 EN1 EN2 EN3 GND CL320 4 CL320 Ordering Information Device CL320 -G indicates package is RoHS compliant (‘Green’) Underside plate is ground EN2 EN1 GND EN3 Pin Configuration OUT3 OUT2 OUT1 VIN 8-Lead SOIC (w/Heat Slug) CL320SG-G 8-Lead SOIC (w/Heat Slug) (SG) www.DataSheet4U.com Absolute Maximum Ratings Parameter Supply voltage, VIN Value -0.5...