CL2
Initial Release
Simple 90V 20mA Temperature Compensated
Constant Current LED Driver IC
Features
5.0V to 90V operating range (V
A-B
)
20mA ±10% at 5-90V
0.01% / °C Typical Temperature
Coefficient
TO-243AA (SOT-89), TO-252 (D-PAK),
& TO-92 packages
No external components (two terminal
device)
Can be paralleled for higher current
General Description
The Supertex CL2 is a high voltage, temperature
compensated, constant current source. The device is
trimmed to provide a constant current of 20mA±10%
at an input voltage of 5-90V. No external
components are required. The device can be used
as a two terminal constant current source or constant
current sink.
A typical application for the CL2 is to drive LEDs with
a constant current of 20mA. They can also be used
in parallel to provide higher currents such as 40mA,
60mA or 80mA. The device is available in SOT-89,
TO-252 (D-PAK), and TO-92 packages.
Applications
LED driver
Industrial lamp indicators
Signage
Accent lighting
Automotive
Constant current source
Constant current sink
Typical Application Circuit
Functional Circuit Diagram
V
A
V
A
CL2
Up to 90V
+ V
LED(total)
I
LED
<20mA
V
B
Control Circuit
and Temperature
Compensation
+
V
LED(total)
-
V
B
NR062905
1
SUPERTEX [ Supertex, Inc ]
