3-Channel 20mA Linear LED Driver
CL320
3-Channel 20mA Linear LED Driver
Features
► ±6% current accuracy @ 4.0 -15V ► 90V standoff voltage ► Separate ena...
Description
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)
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Absolute Maximum Ratings
Parameter Supply voltage, VIN Value -0.5...
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