Product Brief
Product Brief
SPICE Models, Package Details and other technical resources:
Engineering resources are available at www.centralsemi.com.
RoHS and REACH compliance declarations
Visit the Quality section of Central’s website to access.
Central Semiconductor Corp. •
145 Adams Avenue •
Hauppauge,
NY 11788 • USA • www.centralsemi.com
Central Semiconductor’s CDCLD series of ZTC Current Limiting Diodes (ZTC CLDs) is specifically designed for applications
requiring a constant current regulation. The ZTC CDCLD series was designed with a unique process which maintains
constant current over a broad temperature range. This Zero Temperature Coefficient feature eliminates the need for
additional resistors to compensate for variation in the current limit as a result of changes in temperature. The regulator
current values range from 27.5mA to 575mA with a maximum limiting voltage (VL) from 1.5V to 2.0V.
Manufactured in the industry standard DPAK surface mount package, these Industry First devices are ideal for high
intensity industrial and consumer lighting systems, as well as test/measurement equipment and standard LED applications.
The complete range of devices is also available in bare die for space constrained assemblies and module applications.
• High intensity lighting systems
• Infrastructure lighting systems
• LED drivers
• Light dimming systems
• Test/measurement equipment
Applications
• Eliminates need for additional
resistors
• Active current source
performance
• Optimized for heat disspiation
BenefitsFeatures
• Constant current range
• Temperature independance
• High stability over wide
temperature range
• Nominal current regulation at
low voltage input
• Bare die coming soon
Maximum Ratings (T
A
= 25˚C) Electrical Characteristics (T
A
= 25˚C unless otherwise noted)
Central Part No.
Peak Operating
Voltage
P
OV
Operating &
Junction Storage
Temperature
T
J
, T
stg
Regulator
Current
(tp=4.5ms)
I
P
@ V
T
=5.0V
Maximum
Limiting
Voltage
(tp=5.0ms)
V
L
@ I
L
=0.8 x I
P
MIN
(V) (°C)
MIN
(mA)
NOM
(mA)
MAX
(mA)
(V)
CDCLD025* 50 -55 to +150 22.5 25 27.5 1.5
CDCLD040* 50 -55 to +150 36 40 44 1.5
CDCLD080 50 -55 to +150 72 80 88 1.8
CDCLD100 50 -55 to +150 85 100 115 2.0
CDCLD120 45 -55 to +150 102 120 138 2.0
CDCLD200 27 -55 to +150 170 200 230 2.0
CDCLD400 13.5 -55 to +150 340 400 460 2.0
CDCLD500 10.8 -55 to +150 425 500 575 2.0
Bare die coming soon
* Item under development.
RoHS & REACH Compliant
™
ZTC
DPAK
Current Limiting Diodes*
Zero Temperature Coefficient (ZTC)
*ALSO REFERRED TO AS CURRENT REGULATING DIODE
