operating range (VA-B) 20mA ±10% 0.01%/°C typical temperature coeffici

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operating range (VA-B) 20mA ±10% 0.01%/°C typical temperature coeffici

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Simple, 90V, 20mA, Temperature Compensated, Constant Current, Driver
operating range (VA-B) 20mA ±10% 0.01%/°C typical temperature coefficient Available TO-243AA (SOT-89), TO-252 (D-PAK), TO-92 packages paralleled higher current
Supertex high voltage, temperature compensated, constant current source. device trimmed provide constant current 20mA±10% input voltage 90V. device used terminal constant current source constant current sink. typical application drive LEDs with constant current 20mA. Multiple CL2s also used parallel provide higher currents such 40mA, 60mA 80mA. device available TO-243AA (SOT-89), TO-252 (D-PAK), TO-92 packages.
Applications
driver Industrial lamp indicators Signage Accent lighting Automotive Constant current source Constant current sink
Typical Application Circuit
Functional Circuit Diagram
VLED(total)
100nF
Control Circuit Temperature Compensation
ILED <20mA
VLED(total)
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
Ordering Information
Device Package Options TO-252 (D-PAK) CL2K4-G TO-92 CL2N3-G TO-243AA (SOT-89) CL2N8-G
Configurations
indicates package RoHS compliant (`Green')
TO-252 (D-PAK) (K4)
TO-92 (N3)
Absolute Maximum Ratings
Parameter Operating voltage, VA-B Operating junction temperature, Storage temperature, Value 100V -40°C +125°C -55°C +150°C
TO-243AA (SOT-89) (N8)
Product Marking
YYWW CL2K4 LLLLLLL
Year Sealed Week Sealed Number "Green" Packaging
Absolute Maximum Ratings those values beyond which damage device occur. Functional operation under these conditions implied. Continuous operation device absolute rating level affect device reliability. voltages referenced device ground.
TO-252 (D-PAK) (K4)
Year Sealed Week Sealed "Green" Packaging
Thermal Characteristics
Package TO-252 TO-92 TO-243AA Power Dissipation
25OC (OC/W)
(OC/W)
TO-92 (N3)
CL2W
2.0* 1.3*
Code week sealed "Green" Packaging TO-243AA (SOT-89) (N8)
Mounted board; 25mm 25mm 1.57mm
Electrical Characteristics 25°C unless otherwise specified)
VA-B IA-B IA-B/T RA-B
Parameter Operating voltage Current regulation IA-B temperature coefficient Operating junction temperature Dynamic resistance
18.0
0.01 300k
Units %/OC
Conditions -VA-B 5.0V VA-B 45V, -40OC +100OC
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
Functional Circuit Diagram
Control Circuit Temperature Compensation
Equivalent Block Diagram
20mA ±10%
Temperature Characteristics
1.03
Current, normalized 25°C
1.02
1.01
1.00
0.99
0.98
Temperature (°C)
Output Current Voltage
(mA)
VA-B
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
Multiple Strings
LED(total)
100nF
ILED ~20mA
ILED ~20mA
ILED ~20mA
ILED ~20mA
VLED(total)
Higher Current
+VLED(total)
100nF
~60mA
VLED (total)
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
3-Lead TO-252 D-PAK Package Outline (K4)
Note
View
Front View
Rear View
Side View
Gauge Plane
Seating Plane
View
Note: Although terminal locations shown, only functional. Lead number removed. Symbol Dimension (inches) .086 .094 .000* .005 .025 .035 .030 .045 .195 .215 .018 .035 .235 .240 .245 .205 .217* .250 .265 .170 .182* .090 .370 .410 .055 .060 .070 .108 .020 .035 .050 .025* .040 .045 .060
JEDEC Registration TO-252, Variation Issue June 2004. This dimension specified original JEDEC drawing. value listed reference only. Drawings scale. Supertex Doc. DSPD-3TO252K4, Version D081408.
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
3-Lead TO-92 Package Outline (N3)
Seating Plane
Front View
Side View
Bottom View
Symbol Dimensions (inches)
.170 .210
.014 .022
.014 .022
.175 .205
.125 .165
.080 .105
.095 .105
.045 .055
.500 .610*
JEDEC Registration TO-92. This dimension specified original JEDEC drawing. value listed reference only. This dimension non-JEDEC dimension. Drawings scale. Supertex Doc.#: DSPD-3TO92N3, Version D080408.
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com
3-Lead TO-243AA (SOT-89) Package Outline (N8)
Symbol Dimensions (mm)
1.40 1.60
0.44 0.56
0.36 0.48
0.35 0.44
4.40 4.60
1.62 1.83
2.29 2.60
2.13 2.29
1.50
3.00
3.94 4.25
0.89 1.20
JEDEC Registration TO-243, Variation Issue July 1986. Drawings scale. Supertex Doc. DSPD-3TO243AAN8, Version D070908.
(The package drawings this data sheet reflect most current specifications. latest package outline information
Supertex inc. does recommend products life support applications, will knowingly sell them such applications unless receives adequate "product liability indemnification insurance agreement." Supertex inc. does assume responsibility devices described, limits liability replacement devices determined defective workmanship. responsibility assumed possible omissions inaccuracies. Circuitry specifications subject change without notice. latest product specifications refer Supertex inc. website: http//www.supertex.com.
©2008 rights reserved. Unauthorized reproduction prohibited.
Doc.# DSFP-CL2 A091108
1235 Bordeaux Drive, Sunnyvale, 94089 Tel: 408-222-8888 www.supertex.com

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