CL2 Datasheet, PDF (1/7 Pages) Supertex, Inc – Simple 90V 20mA Temperature Compensated Constant Current LED Driver IC

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
Applications
LED driver
Industrial lamp indicators
Signage
Accent lighting
Automotive
Constant current source
Constant current sink
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.
Typical Application Circuit
Up to 90V
+ V_LED(total)
V_A
CL2
V_B
I_LED
<20mA
+
V_LED(total)
-
Functional Circuit Diagram
V_A
Control Circuit
and Temperature
Compensation
V_B
NR062905
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