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| CL1 Simple 90V 20mA Temperature Compensated Constant Current LED Driver IC Features 5.0V to 90V operating range (Va-b) 20mA 5% at 45V Va-b -8.5A / C Typical Temperature Coefficient SOT-89, D-PAK & TO-92 packages No external components (two terminal device) Can be paralleled for higher current General Description The Supertex CL1 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 20mA5% at an input voltage of 45V. 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 CL1 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, 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 Va Functional Circuit Diagram Va CL1 Up to 90V + VLED(total) ILED < 20mA Vb Control Circuit and Temperature Compensation + VLED(total) Vb 1 CL1 Ordering Information Order Number / Package TO-92 CL1N3 /CL1N3-G D-PAK CL1K4-G TO-243AA CL1N8 /CL1N8-G -G indicates package id RoHS compliant ("Green") Thermal Characteristics Package TO-92 TO-243AA (SOT-89) TO-252 (D-PAK) Power Dissipation @ TA=25C 0.73W 1.3W* 2.0W* JC C/W 125 15 6.0 JA C/W 170 78* 50* * 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 0C to +125C -55C to +150C *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 VA VB TO-252 (D-PAK) NC VA Vb NC V a (TO-92) VB VA NC TO-252 TO-243AA (D-PAK) (SOT-89) NC = No Connect 2 CL1 Electrical Characteristics (@ TJ=25C unless otherwise specified) Symbol Va-b Ia-b Parameter Min 17.1 19.0 19.0 Typ 18.0 20.0 22.0 -8.5 17 0 125 Maximum operating voltage Current regulation Ia-b temperature coefficient AC resistance Operating junction temperature Max 90 18.9 21.0 24.2 Ia-b/T Ra-b TJ Units V mA mA mA A/C K C Conditions Va-b=5V Va-b=45V Va-b=90V Va-b=45V, TJ=0C to 100C Va-b=5.0V to 90V Output Current vs Voltage 25 20 Ia-b (mA) 15 10 5 0 0 10 20 30 40 50 60 70 80 90 100 Va-b (Volts) 3 CL1 CL1 for 120V Off-Line LED Driver CL1 for Multiple LED Strings Va Va Va Va Up to 90V +VLED(total) CL1 ILED ~20mA Vb CL1 ILED ~20mA Vb CL1 ILED ~20mA Vb CL1 ILED ~20mA Vb + VLED(total) - CL1 for 120V Off-Line LED Driver Va Va Va Up to 90V +VLED(total) CL1 Vb CL1 Vb CL1 + Vb I LED ~60mA VLED (total) _ Doc#: DSFP-CL1 B112806 4 Package Outline 3-Lead TO-252 D-PAK Package Outline (K4) A c2 E E1 L3 4 1 H D D1 1 2 3 L4 L5 Detail B b2 e b Side View Front View Rear View Gauge Plane L2 L L1 A1 Seating Plane Detail B Notes: 1. 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed. Symbol MIN Dimension (inches) NOM MAX A .086 .094 A1 .005 b .025 .035 b2 .030 .045 c2 .018 .035 D .235 .240 .245 D1 .205 - E .250 .265 E1 .170 - e .090 BSC H .370 .410 L .055 .060 .070 L1 .108 REF L2 .020 BSC L3 .035 .050 L4 .040 L5 .045 .060 0 O 1 0O O 10 15O JEDEC Registration TO-252, Variation AA, Issue E, June 2004. Drawings not to scale. Doc. #: DSPD-3TO252K4 C051707 Package Outline 3-Lead TO-92 Package (N3) 0.175 - 0.205 0.170 - 0.210 Seating Plane 0.500 MIN 123 0.014 - 0.022 0.014 - 0.022 Side View 0.045 - 0.055 0.095 - 0.105 Front View 0.135 MIN 0.125 - 0.165 0.080 - 0.105 1 2 3 Note: All dimension are in inches; angles are in degrees. Top View Doc. #: DSPD-3TO92N3 B062306 Package Outlines 3-Lead TO-243AA (SOT-89) Surface Mount Package (N8) 4.50 0.10 1.72 0.10 0.40 0.05 Exclusion Zone 1.50 0.10 4.10 0.15 2.45 0.15 2.21 0.08 No Vias/Traces in this area. Shape of pad may vary. 1.05 0.15 0.42 0.06 1.50 BSC 3.00 BSC 0.5 0.06 Top View Side View Bottom View Notes: 1. All dimensions are in millimeters; all angles in degrees. Doc. #: DSPD-3TO243AAN8 C103106 |
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