CL2 Initial Release Simple 90V 20mA Temperature Compensated Constant Current LED Driver IC Features General Description 5.0V to 90V operating range (VA-B) 20mA ±10% at 5-90V 0.01% / °C Typical Temperature Coefficient TO-243AA (SOT-89), TO-252 (D-PAK), & TO-92 packages No external components (two terminal device) Can be paralleled for higher current The Supertex CL2 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 20mA±10% at an input voltage of 5-90V. 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 CL2 is to drive LEDs with a constant current of 20mA. They can also be used in parallel to provide higher currents such as 40mA, 60mA or 80mA. The device is available in SOT-89, TO-252 (D-PAK), and TO-92 packages. Applications LED driver Industrial lamp indicators Signage Accent lighting Automotive Constant current source Constant current sink Typical Application Circuit Functional Circuit Diagram VA VA CL2 Up to 90V + VLED(total) VB Control Circuit and Temperature Compensation + ILED <20mA VLED(total) VB NR062905 1 CL2 Ordering Information Order Number / Package TO-92 TO-243AA* TO-252 CL2N3 CL2N8 CL2K4 *Same as SOT-89 product supplied on 2000 piece tape reels. Thermal Characteristics Power Dissipation @ TA = 25°C 0.6W θJC °C/W 125 θJA °C/W 170 TO-243AA (SOT-89) 1.3W* 15 78* TO-252 (D-PAK) 2.0W* 6.0 50* Package TO-92 * Mounted on FR4 board; 25mm x 25mm x 1.57mm. Absolute Maximum Ratings* VA-B, Operating Voltage TJ, Operating Junction Temperature Ts, Storage Temperature 100V -40°C to +125°C -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. Package Options VB VA TO-25 2 (D-PAK) VA NC VB NC VB (TO-92 ) VA VB NC TO-243A A (SOT-89) NC = No Connect 2 NR062905 CL2 Electrical Characteristics (@ TJ = 25°C unless otherwise specified) Symbol VA-B IA-B ∆IA-B/∆T TJ RA-B Parameter Maximum operating voltage Current regulation IA-B temperature coefficient Min Typ 18.0 20.0 Max 90 22.0 0.01 Operating junction temperature Dynamic resistance -40 Units V mA %/°C 125 300k Conditions VA-B = 5-90V VA-B = 45V, TJ = -40°C to 100°C °C Ω Output Current vs. Voltage 25 20 15 10 5 0 0 10 20 30 40 50 V A-B 3 60 70 80 90 100 NR062905 CL2 CL2 for Multiple LED Strings CL2 for Higher Current 4 NR062905 CL2 3 Lead TO-252 (D-PAK) Package (K4) (6.350 to 6.730) Measurement Legend = Dimensions in Inches (Dimensions in Millimeters) 5 NR0629705 CL2 3 Lead TO-92 Plastic Package (N3) 0.190 ± 0.020 (4.826 ± 0.508) 0.190 ± 0.020 (4.826 ± 0.508) 0.050 MAX (1.270) Uncontrolled Lead Dia. D A 5° NOM Seating Plane 0.500 MIN (12.700) L 0.018 Ty p (0.457) b 123 0.050 ± 0.005 (1.270 ± 0.127) e1 0.100 ± 0.005 (2.540 ± 0.127) e C H 0.050 ± 0.005 (1.270 ± 0.127) E 0.140 ± 0.005 (3.556 ± 0.127) 10° NOM 0.090 R NOM (2.286) 2 3 Measurement Legend = Note: Circle (e.g. B ) indicates JEDEC Reference. 0.015 ± 0.005 Typ (0.381 ± 0.127) Before Lead Finish Dimensions in Inches (Dimensions in Millimeters) 6 NR062905 CL2 3-LEAD TO-243AA (SOT-89) Surface Mount Package (N8) Dimensions Inches Millimeters Symbol Min Max Min Max A 0.055 0.063 1.40 1.60 b1 0.014 0.019 0.35 0.48 b2 0.017 0.023 0.44 0.58 b3 0.064 0.072 1.62 1.83 C 0.014 0.017 0.35 0.44 D 0.173 0.181 4.40 4.60 E 0.090 0.102 2.29 2.60 e e1 .118BSC .059BSC 3.00BSC 1.15BSC H 0.156 0.167 3.90 4.25 L 0.035 0.047 0.88 1.20 K 0.037 0.040 0.93 1.05 M 0.047 0.049 1.20 1.25 Doc#: DSFP-CL2 NR062905 7