Supertex inc. CL25. Simple 90V, 25mA, Temperature Compensated, Constant Current, LED Driver IC. Functional Circuit Diagram CL25.

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1 Supertex inc. Simple 90V,, Temperature Compensated, Constant Current, LED Driver IC Features V operating range (V A-B ) ±10% at V 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 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of ±10% at an input voltage of V. 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 is to drive LEDs with a constant current of. 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 Functional Circuit Diagram Up to 90V + V LED(total) + Control Circuit and Temperature Compensation V LED(TOTAL) -

2 Ordering Information Package Options Device TO-92 TO-243AA (SOT-89) N3-G N8-G -G indicates package is RoHS compliant ( Green ) Pin Configuration Thermal Characteristics Package Absolute Maximum Ratings Parameter Operating voltage, V A-B Operating junction temperature, T J Storage temperature, T S Power A = 25 O C (W) θ JC ( O C/W) θ JA ( O C/W) TO TO-243AA (SOT-89) 1.3* 15 78* * Mounted on FR4 board; 25mm x 25mm x 1.57mm Value 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. All voltages are referenced to device ground. Electrical Characteristics (T A = 25 C unless otherwise specified) TO-92 (N3) Product Marking SiCL 25 YYWW Sym Parameter Min Typ Max Units Conditions V A-B Operating voltage V --- I A-B Current regulation ma V A-B = 5.0V - 90V ΔI A-B /ΔT I A-B temperature coefficient %/ O C V A-B = 45V, T J = -40 O C to +100 O C T J Operating junction temperature O C --- R A-B Dynamic resistance kω --- NC N/C TO-243AA (SOT-89) (N8) NC = No Connect YY = Year Sealed WW = Week Sealed = Green Packaging Package may or may not include the following marks: Si or TO-92 (N3) C25W W = Code for week sealed = Green Packaging Package may or may not include the following marks: Si or TO-243AA (SOT-89) (N8) 2

3 Functional Circuit Diagram Equivalent Block Diagram Control Circuit and Temperature Compensation ±10% Temperature Characteristics 1.02 Current, normalized to 25 C V 10V 30V 45V 90V Output Current vs Voltage Temperature ( C) I A-B (ma) V A-B 3

4 for Multiple LED Strings Up to 90V +V LED(TOTAL) + 75mA V LED(TOTAL) - for Higher Current Up to 90V +V LED(TOTAL) + V LED(TOTAL) - 4

5 3-Lead TO-92 Package Outline (N3) D Seating Plane A L b e1 e Front View c Side View E1 1 3 E 2 Bottom View Dimensions (inches) Symbol A b c D E E1 e e1 L MIN NOM MAX * 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 E

6 3-Lead TO-243AA (SOT-89) Package Outline (N8) D D1 C E H E1 L b e e1 b1 A Top View Side View Dimensions (mm) Symbol A b b1 C D D1 E E1 e e1 H L MIN NOM BSC BSC - - MAX JEDEC Registration TO-243, Variation AA, Issue C, July This dimension differs from the JEDEC drawing Drawings not to scale. Supertex Doc. #: DSPD-3TO243AAN8, Version F 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// Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Doc.# DSFP- A Supertex inc Bordeaux Drive, Sunnyvale, CA Tel: