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Technical content

Features

► 5.0 to 220V operating range (VA-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

Applications

► Industrial lamp indicators ► Signage ► Accent lighting ► Constant current source ► Constant current sink General Description 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. Typical Application Circuit Simple, 220V, 20mA, Temperature-Compensated, Constant Current, LED Driver IC VA VB Up to 220V + VLED(TOTAL) VA VB Functional Circuit Diagram CL220 ILED 20mA Control Circuit and Temperature Compensation 10nF VLED(TOTAL)

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com

Ordering Information

TO-252 (D-PAK) TO-220 CL220 CL220K4-G CL220N5-G -G indicates package is RoHS compliant (‘Green’) Absolute Maximum Ratings Parameter Value Operating voltage, VA-B 240V Operating junction temperature, TJ -40°C to +125°C Storage temperature, TS -55°C to +150°C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. Pin Configurations Sym Parameter Min Typ Max Units Conditions Thermal Characteristics Guaranteed by design – not production tested θjc Thermal resistance, junction to case TO-252 (D-PAK) - 6.3 - OC/W --- TO-220 - 8.3 - θja Thermal resistance, junction to ambient TO-252 (D-PAK) - 78 - OC/W Soldered to 2.0cm2 exposed copper free air areaTO-220 - 70 - TO-252 (D-PAK) (front view) Pin Description VA Current flows into this pin. VB Current flows out of this pin. Pin Designation Product Marking VA NC VB TO-252 (D-PAK) Packages may or may not include the following marks: Si or YY = Year Sealed WW = Week Sealed L = Lot Number = “Green” Packaging Si YYWW CL220K4 LLLLLL L TO-220 (front view) VA NC VB VB L = Lot Number YY = Year Sealed WW = Week Sealed = “Green” Packaging Top Marking CL220N5 LLLLLLLLL YYWW TO-220 Packages may or may not include the following marks: Si or

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Fig. 3 Temperature Characteristics Fig. 1 Functional Circuit Diagram Fig. 2 Equivalent Block Diagram VA VB Control Circuit and Temperature Compensation 20mA VA VB Sym Parameter Min Typ Max Units Conditions VA-B Operating voltage 5.0 - 220 V --- ΔIA-B/ΔT IA-B temperature coefficient - 0.01 - %/OC VA-B = 45V, Tj = -40OC to +100OC RA-B Dynamic resistance - 300 - kΩ --- IAB Output current 18 20 22 mA VAB = 4.0 - 160V 18 - 25 VAB = 160 - 220V (Fig. 4) - - 22 VAB = 0 - 4.0V IOS Turn-on overshoot current - 25 - mA VT = 45V (Fig. 5) tOS Overshoot duration - 1 - µs VT = 45V (Fig. 5) tDLY Turn-on delay - 10 - µs VT = 45V (Fig. 5) tRISE Turn-on rise time - 200 - ns VT = 45V (Fig. 5) Electrical Characteristics (Tj = 25°C unless otherwise specified) 1.02 1.01 1.00 0.99 0.98-55 -35 -15 5 25 45 65 85 105 125 145 Junction Temperature (°C) Current, normalized to 25°C 45V 90V

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Fig. 4 Output Characteristics Fig. 5 Timing Diagram tDLY tRISE 10% 90% IA-B 0mA IOS 100% Inrush spike due to charging of parasitic capacitances and dV/dt CDG feed-thru Turn-on overshoot due to start-up characteristics of internal circuitry VT VA-B tOS 0 5 10 15 20 60 100 140 180 220 IA-B (mA) VA-B (V) scale change

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Fig. 8 CL220 for Higher Current Fig. 7 CL220 for Multiple LED Strings ILED 20mA VB VA Up to 220V +VLED(TOTAL) VB VA VB VA VB VA 10nF ILED 20mA ILED 20mA ILED 20mA VLED(TOTAL) CL220 CL220 CL220 CL220 VB VA Up to 220V +VLED(TOTAL) VB VA ILED 60mA VB VA 10nF VLED(TOTAL) CL220 CL220 CL220 Fig. 6 Timing Test Circuit CL220 VT 1.0µF film IA-B

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 3-Lead TO-252 (D-PAK) Package Outline (K4) Note: 1. Although 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed. 12 3 L4 L5 bb2 e L Seating Plane Gauge Plane θ D E View B Front View Side ViewRear View View B H A Note 1 Symbol A A1 b b2 b3 c2 D D1 E E1 e H L L1 L2 L3 L4 L5 θ θ1 Dimen- sion (inches) .090 BSC .370 .055 .108 REF .020 BSC .035 .025* .035† 0O 0O JEDEC Registration TO-252, Variation AA, Issue E, June 2004. * This dimension is not specified in the JEDEC drawing. † This dimension differs from the JEDEC drawing. Drawings not to scale. Supertex Doc. #: DSPD-3TO252K4, Version F040910.

Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such appl ications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com) ©2012 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc.

1235 Bordeaux Drive, Sunnyvale, CA 94089

Tel: 408-222-8888 www.supertex.com (The package drawings in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) CL220 3-Lead TO-220 Package Outline (N5) Symbol A A1 A2 b b2 c D D1 D2 E E1 E2 e H1 L L1 Q ΦP Dimen- sion (inches) .100 BSC JEDEC Registration TO-220, Variation AB, Issue K, April 2002. * This dimension is not specified in the JEDEC drawing. † This dimension differs from the JEDEC drawing. Drawings not to scale. Supertex Doc. #: DSPD-3TO220N5, Version C041009. L Ae View B 12 3 D Q E ΦP Seating Plane A A Chamfer Optional E Thermal Pad Front View Side View View A - A bb2 1 2 3 View B c Doc.# DSFP-CL220 A021312