CL1_09 SUTEX | Alldatasheet

Document overview

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Technical content

Features

5.0 to 90V operating range (VA-B) 20mA ±5% at 45V (VA-B) -8.5µA/°C typical temperature coefficient Available in TO-243AA (SOT-89), TO-252 (D-PAK), & TO-92 packages No external components (two terminal device) Can be paralleled for higher current

Applications

Industrial lamp indicators Signage Accent lighting Automotive Constant current source Constant current sink General Description The Supertex CL1 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 20mA±5% at an input voltage of 45V. No external components are required. The device can be used as a two terminal constant current source or constant current sink. A typical application for the CL1 is to drive LEDs with a constant current of 20mA. Multiple CL1s can also be used in parallel to provide higher currents such as 40mA, 60mA or 80mA. The device is available in TO-243AA (SOT-89), TO-252 (D-PAK), and TO-92 packages. Typical Application Circuit Simple, 90V, 20mA, Temperature Compensated, Constant Current, LED Driver IC ILED 20mA VA VB CL1 Up to 90V + VLED(total) VLED(total) VA Control Circuit and Temperature Compensation VB Functional Circuit Diagram

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

Ordering Information

(D-PAK) TO-92 TO-243AA (SOT-89) CL1 CL1K4-G CL1N3-G CL1N8-G -G indicates package is RoHS compliant (‘Green’) Absolute Maximum Ratings Parameter Value Operating voltage, VA-B 100V Operating junction temperature, TJ 0°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. Thermal Characteristics Package Power Dissipation @TA = 25OC (w) θJC (OC/W) θJA (OC/W) TO-92 0.73 125 170 TO-243AA 1.3* 15 78* Pin Configurations * Mounted on FR4 board; 25mm x 25mm x 1.57mm Sym Parameter Min Typ Max Units Conditions VA-B Maximum operating voltage - - 90 V --- IA-B Current regulation 17.1 18.0 18.9 mA VA-B = 5.0V 19.0 20.0 21.0 VA-B = 45V 19.0 22.0 24.2 VA-B = 90V ΔIA-B/ΔT IA-B temperature coefficient - -8.5 - µA/°C VA-B = 45V, TJ = 0OC to 100OC TJ Operating junction temperature -40 - 125 OC --- RA-B AC resistance - 17 - kΩ VA-B = 5.0V to 90V Electrical Characteristics (TA = 25°C unless otherwise specified) YY = Year Sealed WW = Week Sealed L = Lot Number = “Green” Packagin g Si YYWW CL1K4 LLLLLL L YY = Year Sealed WW = Week Sealed = “Green” Packaging SiCL YYW W CL1W W = Code for week sealed = “Green” Packagin g TO-252 (D-PAK) (K4) TO-92 (N3) TO-92 (N3) TO-243AA (SOT-89) (N8) TO-252 (D-PAK) (K4) TO-243AA (SOT-89) (N8) Product Marking NC VA VB VA N/C VB VB N/CVA VA

  • 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Output Current vs Voltage 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 100 VA-B (Volts) IA- B (m Control Circuit and Temperature Compensation 20mA Functional Circuit Diagram Equivalent Block Diagram VA VA VB VB Functional Block Diagram Equivalent Block Diagram CL1 for 120V Off-Line LED Driver R VBVA CL1 ILED ~20mA
  • 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com CL1 for 120V Off-Line LED Driver CL1 for Multiple LED Strings VB VA CL1 Up to 90V +VLED(total) VB VA CL1 ILED ~60mA VB VA CL1 VLED (total) ILED ~20mA VB VA CL1 Up to 90V +VLED(total) ILED ~20mA VB VA CL1 ILED ~20mA VB VA CL1 ILED ~20mA VB VA CL1 VLED(total)
  • 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 3-Lead TO-252 D-PAK Package Outline (K4) Note: Although 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed.1. 1 2 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* .045 0O 0O JEDEC Registration TO-252, Variation AA, Issue E, June 2004. * This dimension is not specified in the JEDEC drawing. Drawings not to scale. Supertex Doc. #: DSPD-3TO252K4, Version E041309.
  • 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 3-Lead TO-92 Package Outline (N3) Symbol A b c D E E1 e e1 L Dimensions (inches) JEDEC Registration TO-92. * This dimension is not specified in the JEDEC drawing. † This dimension differs from the JEDEC drawing. Drawings not to scale. Supertex Doc.#: DSPD-3TO92N3, Version E041009. Seating Plane Front View Side View Bottom View E D L e c 1 2 3 b A

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 ©2009 All rights reserved. Unauthorized use or reproduction is prohibited .

1235 Bordeaux Drive, Sunnyvale, CA 94089

Tel: 408-222-8888 www.supertex.com CL1 (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.) Doc.# DSFP-CL1 C092409 3-Lead TO-243AA (SOT-89) Package Outline (N8) Symbol A b b1 C D D1 E E1 e e1 H L Dimensions (mm) 1.50 BSC 3.00 BSC 3.94 0.89 JEDEC Registration TO-243, Variation AA, Issue C, July 1986. † This dimension differs from the JEDEC drawing Drawings not to scale. Supertex Doc. #: DSPD-3TO243AAN8, Version E051509. b b1