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CL320 View Datasheet(PDF) - Supertex Inc

Part Name
Description
MFG CO.
'CL320' PDF : 7 Pages View PDF
1 2 3 4 5 6 7
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
Over-temperature protection
8-Lead SOIC (w/Heat Slug) package
Applications
LCD backlighting
Indicator lamps
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.
Block Diagram and Typical Application Circuit
6.5 - 90V
Host
Controller
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
GND
CL320
4
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