Supertex inc. CL25 Simple 90V, 25mA, Temperature Compensated, Constant Current, LED Driver IC Features General Description Applications A typical application for the CL25 is to drive LEDs with a constant current of 25mA. Multiple CL2s can also be used in parallel to provide higher currents such as 50mA, 75mA or 100mA. The device is available in TO-92 and TO-243AA (SOT-89) packaging. ►► ►► ►► ►► ►► 5.0 - 90V operating range (VA-B) 25mA ±10% at 5.0 - 90V 0.01%/°C typical temperature coefficient No external components (two terminal device) Can be paralleled for higher current The Supertex CL25 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 25mA±10% at an input voltage of 5.0 - 90V. No external components are required. The device can be used as a two terminal constant current source or constant current sink. ►► LED channel lighting ►► Industrial lamp indicators ►► Accent lighting Typical Application Circuit Functional Circuit Diagram VA CL25 Up to 90V + VLED(total) VB + ILED 25mA VA Control Circuit and Temperature Compensation VLED(TOTAL) VB - Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com CL25 Ordering Information Package Options Device CL25 TO-92 TO-243AA (SOT-89) CL25N3-G CL25N8-G -G indicates package is RoHS compliant (‘Green’) Pin Configuration VB Thermal Characteristics Package Power Dissipation VB θJC VA θJA @TA = 25OC (W) (OC/W) TO-92 0.6 125 170 TO-243AA (SOT-89) 1.3* 15 78* VA VB (OC/W) N/C NC TO-92 (N3) TO-243AA (SOT-89) (N8) NC = No Connect * Mounted on FR4 board; 25mm x 25mm x 1.57mm Product Marking Absolute Maximum Ratings Parameter Value Operating voltage, VA-B 100V Operating junction temperature, TJ -40°C to +125°C Storage temperature, TS -55°C to +150°C SiCL 2 5 YYWW YY = Year Sealed WW = Week Sealed = “Green” Packaging Package may or may not include the following marks: Si or TO-92 (N3) 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. W = Code for week sealed = “Green” Packaging C25W Package may or may not include the following marks: Si or TO-243AA (SOT-89) (N8) Electrical Characteristics (TA = 25°C unless otherwise specified) Sym Parameter Min Typ Max Units VA-B Operating voltage 5.0 - 90 V IA-B Current regulation 22.5 25 27.5 mA - 0.01 - %/ C -40 - 125 - 300 - ΔIA-B/ΔT TJ RA-B IA-B temperature coefficient Operating junction temperature Dynamic resistance Supertex inc. Conditions --VA-B = 5.0V - 90V O VA-B = 45V, TJ = -40OC to +100OC O C --- kΩ --- ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 2 CL25 Equivalent Block Diagram Functional Circuit Diagram VA VA Control Circuit and Temperature Compensation 25mA ±10% VB VB Temperature Characteristics Current, normalized to 25°C 1.02 1.01 1.00 0.99 5V 10V 30V 45V 90V 0.98 -55 -35 -15 5 25 45 65 85 105 Temperature (°C) Output Current vs Voltage 30 25 I A-B (mA) 20 15 10 5 0 0 10 20 30 40 50 60 70 80 90 100 VA-B Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 3 CL25 CL25 for Multiple LED Strings VA Up to 90V +VLED(TOTAL) CL25 VB VA VA CL25 VB CL25 VB + ILED 75mA VLED(TOTAL) - CL25 for Higher Current VA VA Up to 90V +VLED(TOTAL) CL25 ILED 25mA VB CL25 ILED 25mA VB VA CL25 ILED 25mA VB VA CL25 VB ILED 25mA + VLED(TOTAL) - Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 4 CL25 3-Lead TO-92 Package Outline (N3) D A Seating Plane 1 2 3 L b e1 e c Side View Front View E1 E 3 1 2 Bottom View Symbol Dimensions (inches) A b c D E E1 e e1 L MIN .170 .014† .014† .175 .125 .080 .095 .045 .500 NOM - - - - - - - - - MAX .210 .022† .022† .205 .165 .105 .105 .055 .610* 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. Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com 5 CL25 3-Lead TO-243AA (SOT-89) Package Outline (N8) D D1 C E H L 1 2 E1 3 b b1 e A e1 Side View Top View Symbol Dimensions (mm) A b b1 C D D1 E E1 e MIN 1.40 0.44 0.36 0.35 4.40 1.62 2.29 2.00 NOM - - - - - - - - MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60 2.29 e1 † 1.50 BSC 3.00 BSC H L 3.94 0.73† - - 4.25 1.20 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 F111010. Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications 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) Supertex inc. ©2011 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Doc.# DSFP-CL25 A040511 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com 6