CL325
3-Channel 25mA 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
General Description
The CL325 is designed to drive 3 strings of LEDs at a
constant current of 25mA.
Other drivers with currents in the range of 20 - 30mA are
available. The drive current is fixed, with a ±6% tolerance
over a V
OUT
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 CL325 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
C
IN
100nF
8
7
6
5
VIN
OUT1
V
DD
OUT2
OUT3
REG
Host
Controller
1
2
3
EN1
EN2
EN3
GND
CL325
4
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
SUPERTEX [ Supertex, Inc ]
