CL1 Simple, 90V, 20mA, Temperature Compensated, Constant Current, LED Driver IC Features General Description The Supertex CL1 is a high voltage, temperature compensated, 5.0 to 90V operating range (V ) A-B constant current source. The device is trimmed to provide a 20mA 5% at 45V (V ) A-B constant current of 20mA5% at an input voltage of 45V. No -8.5A/C typical temperature coefcient external components are required. The device can be used Available in TO-243AA (SOT-89), TO-252 (D-PAK), as a two terminal constant current source or constant current & TO-92 packages sink. No external components (two terminal device) Can be paralleled for higher current 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 Applications device is available in TO-243AA (SOT-89), TO-252 (D-PAK), and TO-92 packages. LED driver Industrial lamp indicators Signage Accent lighting Automotive Constant current source Constant current sink Typical Application Circuit VA Functional Circuit Diagram VA CL1 Up to 90V VB Control Circuit + V LED(total) and Temperature Compensation + I LED V LED(total) 20mA VB - 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.comCL1 Pin Congurations Ordering Information VA Package Options Device TO-252 TO-243AA TO-92 VA (D-PAK) (SOT-89) VB N/C CL1 CL1K4-G CL1N3-G CL1N8-G VB -G indicates package is RoHS compliant (Green) NC TO-252 (D-PAK) (K4) TO-92 (N3) VA N/C VA VB TO-243AA (SOT-89) (N8) Absolute Maximum Ratings Parameter Value Operating voltage, V 100V A-B Product Marking Operating junction temperature, T 0C to +125C YY = Year Sealed J Si YYWW WW = Week Sealed Storage temperature, T -55C to +150C CL1K4 S L = Lot Number LLLLLLL Absolute Maximum Ratings are those values beyond which damage to the = Green Packaging device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect TO-252 (D-PAK) (K4) device reliability. All voltages are referenced to device ground. S i C L YY = Year Sealed 1 WW = Week Sealed Thermal Characteristics Y Y W W = Green Packaging Power Dissipation TO-92 (N3) JC JA O Package T = 25 C O O A ( C/W) ( C/W) (w) W = Code for week sealed C L 1 W = Green Packaging TO-252 2.0* 6.0 50* TO-243AA (SOT-89) (N8) TO-92 0.73 125 170 TO-243AA 1.3* 15 78* * Mounted on FR4 board 25mm x 25mm x 1.57mm Electrical Characteristics (T = 25C unless otherwise specied) A Sym Parameter Min Typ Max Units Conditions V Maximum operating voltage - - 90 V --- A-B 17.1 18.0 18.9 V = 5.0V A-B I Current regulation 19.0 20.0 21.0 mA V = 45V A-B A-B 19.0 22.0 24.2 V = 90V A-B O O I /T I temperature coefcient - -8.5 - A/C V = 45V, T = 0 C to 100 C A-B A-B A-B J O T Operating junction temperature -40 - 125 C --- J R AC resistance - 17 - k V = 5.0V to 90V A-B A-B 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com 2