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CL320 Datasheet Preview

CL320 Datasheet

3-Channel 20mA Linear LED Driver

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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
www.DataSheePt4WU.Mcomdimming
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
CL320
GND
4




Supertex

CL320 Datasheet Preview

CL320 Datasheet

3-Channel 20mA Linear LED Driver

No Preview Available !

CL320
Ordering Information
Device
8-Lead SOIC (w/Heat Slug)
CL320
CL320SG-G
-G indicates package is RoHS compliant (‘Green’)
Pin Configuration
OUT3
OUT2
OUT1
VIN
Underside plate
is ground
GND
EN3
EN2
EN1
8-Lead SOIC (w/Heat Slug) (SG)
www.DataSAhebet4sUo.colmute Maximum Ratings
Parameter
Value
Supply voltage, VIN
Output voltage, VOUT
Enable voltage, VEN
Operating temperature(1)
-0.5V to +100V
-0.5V to +100V
-0.5V to +6.5V
-40°C
Storage temperature
-65°C to +150°C
Absolute Maximum Ratings are those values beyond which damage to
the device may occur. Functional operation under these conditions is not
implied. Continuous operation of the device at the absolute rating level
may affect device reliability. All voltages are referenced to device ground.
Note:
(1) Maximum junction temperature internally limited.
Product Marking
YYWW
CL320
LLLL
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
8-Lead SOIC (w/Heat Slug) (SG)
Recommended Operating Conditions (all voltages with respect to GND pin)
Sym Parameter
Min Typ Max Units Conditions
VIN
VOUT
Supply voltage
Output voltage
6.5 - 90 V ---
15 V EN = 0
4.0 -
90 V EN = 1
fEN Enable toggling frequency
TJ Junction temperature
CIN VIN capacitor
0 - 100 kHz ---
-40 - 119 oC ---
- 100 -
nF ---
Thermal Characteristics
Sym Parameter
θJA
Thermal resistance,
junction to ambient
TLIM Over-temperature limit
THYS Over-temperature hysteresis
Min Typ Max Units Conditions
- 48 - OC/W Mounted on JEDEC test PCB (2s 2p)
120 135 150
- 30 -
OC ---
OC ---
2


Part Number CL320
Description 3-Channel 20mA Linear LED Driver
Maker Supertex
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CL320 Datasheet PDF






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