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Technical content

Features

► 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

Applications

► LED channel lighting ► Industrial lamp indicators ► Accent lighting General Description 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. 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. Typical Application Circuit Simple 90V, 25mA, Temperature Compensated, Constant Current, LED Driver IC ILED 25mA VA VBUp to 90V + VLED(total) VA Control Circuit and Temperature Compensation VB Functional Circuit Diagram CL25 VLED(TOTAL)

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

Ordering Information

TO-92 TO-243AA (SOT-89) CL25 CL25N3-G CL25N8-G -G indicates package is RoHS compliant (‘Green’) 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 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 0.6 125 170 TO-243AA (SOT-89) 1.3* 15 78* * Mounted on FR4 board; 25mm x 25mm x 1.57mm Sym Parameter Min Typ Max Units Conditions VA-B Operating voltage 5.0 - 90 V --- IA-B Current regulation 22.5 25 27.5 mA VA-B = 5.0V - 90V ΔIA-B/ΔT IA-B temperature coefficient - 0.01 - %/OC VA-B = 45V, TJ = -40OC to +100OC TJ Operating junction temperature -40 - 125 OC --- RA-B Dynamic resistance - 300 - kΩ ---

Electrical Characteristics

(TA = 25°C unless otherwise specified) NC = No Connect Product Marking YY = Year Sealed WW = Week Sealed = “Green” Packaging Si CL YYWW C25W W = Code for week sealed = “Green” Packaging TO-243AA (SOT-89) (N8) TO-92 (N3) TO-92 (N3) TO-243AA (SOT-89) (N8) Pin Configuration Package may or may not include the following marks: Si or Package may or may not include the following marks: Si or VA N/CVB VB NC VA VB

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Output Current vs Voltage 0 10 20 30 40 50 60 70 80 90 100 VA-B I A-B (mA) Temperature Characteristics 1.02 1.01 1.00 0.99 0.98 -55 -35 -15 5 25 45 65 85 105 Temperature (°C) Current, normalized to 25°C 10V 30V 45V 90V Functional Circuit Diagram Equivalent Block Diagram VA Control Circuit and Temperature Compensation VB 25mA ±10% VA VB

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com CL25 for Higher Current VB VA CL25 Up to 90V +VLED(TOTAL) VB VA CL25 ILED 75mA VB VA CL25 VLED(TOTAL) CL25 for Multiple LED Strings VB VA CL25 Up to 90V +VLED(TOTAL) VB VA CL25 VB VA CL25 VB VA CL25 VLED(TOTAL) ILED 25mA ILED 25mA ILED 25mA ILED 25mA

Supertex inc. ● 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 are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com) ©2011 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 CL25 Doc.# DSFP-CL25 A040511 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 0.73† 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. b b1 D E H E1 C A 12 3 e Top View Side View L