Supertex inc.
Simple, 220V, 20mA,
Temperature-Compensated, Constant Current,
LED Driver IC
Features
General Description
CL220
►
5.0 to 220V operating range (V
A-B
)
►
20mA ±10% at 5.0 - 160V
►
0.01% / °C typical temperature coefficient
►
Available in TO-252 (D-PAK) and TO-220 packages
►
Can be paralleled for higher current
The Supertex CL220 is a high voltage, temperature-
compensated, 20mA constant current regulator. The device
operates at up to 220V, and is accurate to ±10% over a 5.0
- 160V range. The device can be used as a two terminal
constant current source or constant current sink.
A typical application for the CL220 is to drive LEDs with
a constant current of 20mA. Multiple CL220s can also be
used in parallel to provide higher currents such as 40mA,
60mA, 80mA, and so on. The device is available in the TO-
252 (D-PAK) and TO-220 packages.
Applications
►
Industrial lamp indicators
►
Signage
►
Accent lighting
►
Constant current source
►
Constant current sink
Typical Application Circuit
VA
Functional
Circuit Diagram
CL220
VA
Up to 220V
+ V
LED(TOTAL)
10nF
VB
+
I
LED
20mA
Control Circuit
and Temperature
Compensation
V
LED(TOTAL)
–
VB
Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
SUPERTEX [ Supertex, Inc ]
