CL2
Simple 90V, 20mA, Temperature Compensated,
Constant-Current LED Driver IC
Features
Description
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CL2 is a high voltage, temperature compensated, constant-current source. The device is trimmed to provide
a constant current of 20 mA ±10% at an input voltage
of 5–90V. The device can be used as a two-terminal,
constant-current source or constant-current sink.
5.0 to 90V operating range (VA-B)
20 mA ±10% at 5.0 - 90V
0.01%/°C typical temperature coefficient
Available in TO-243AA (SOT-89), TO-252(DPAK), & TO-92 packages
• Can be paralleled for higher current
A typical application for the CL2 is to drive LEDs with a
constant current of 20 mA. Multiple CL2s can also be
used in parallel to provide higher currents such as
40 mA, 60 mA or 80 mA. The device is available in TO243AA (SOT-89), TO-252 (D-PAK), and TO-92 packages.
Applications
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LED driver
Industrial lamp indicators
Signage
Accent lighting
Automotive
Constant current source
Constant current sink
Package Type
VB
VB
VB
VA
N/C
NC
TO-92
VA
TO-252 (D-PAK)
VA
VB
N/C
TO-243AA (SOT-89)
See Table 2-1 for pin information
2015 Microchip Technology Inc.
DS20005448A-page 1
CL2
Typical Application Circuit
VA
Functional Circuit
Diagram
VA
CL2
Up to 90V
+ VLED(total)
100nF
VB
+
ILED
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