CL1 Simple 90V 20mA Temperature Compensated Constant Current LED Driver IC Features General Description 5.0V to 90V operating range (Va-b) 20mA ±5% at 45V Va-b -8.5µA / °C Typical Temperature Coefficient SOT-89, D-PAK & TO-92 packages No external components (two terminal device) Can be paralleled for higher current The Supertex CL1 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 20mA±5% 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 Functional Circuit Diagram Va Va CL1 Up to 90V + VLED(total) Vb Control Circuit and Temperature Compensation + ILED < 20mA VLED(total) Vb 1 CL1 Ordering Information Order Number / Package TO-92 D-PAK TO-243AA CL1N3 /CL1N3-G CL1K4-G CL1N8 /CL1N8-G -G indicates package id RoHS compliant (“Green”) Thermal Characteristics Power Dissipation @ TA=25°C 0.73W 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 0°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 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=25°C unless otherwise specified) Symbol Va-b Ia-b Parameter Maximum operating voltage Current regulation ∆Ia-b/∆T Ia-b temperature coefficient Ra-b Min Typ 17.1 19.0 19.0 18.0 20.0 22.0 -8.5 Units V mA mA mA µA/°C 17 AC resistance TJ Max 90 18.9 21.0 24.2 Operating junction temperature KΩ 0 125 Conditions Va-b=5V Va-b=45V Va-b=90V Va-b=45V, TJ=0°C to 100°C Va-b=5.0V to 90V °C Output Current vs Voltage 25 Ia-b (mA) 20 15 10 5 0 0 10 20 30 40 50 60 Va-b (Volts) 3 70 80 90 100 CL1 CL1 for 120V Off-Line LED Driver CL1 for Multiple LED Strings Va Up to 90V +VLED(total) CL1 Vb Va CL1 Vb Va CL1 Vb Va CL1 Vb + ILED ~20mA ILED ~20mA ILED ~20mA ILED ~20mA VLED(total) - CL1 for 120V Off-Line LED Driver Va Up to 90V +VLED(total) CL1 Vb Va CL1 Vb Va CL1 Vb + I LED ~60mA VLED (total) _ Doc#: DSFP-CL1 B112806 4 Package Outline 3-Lead TO-252 D-PAK Package Outline (K4) A E1 E c2 4 L3 θ1 D1 H D 1 2 L4 3 b2 Detail B b e Front View Side View Rear View Gauge Plane A1 Seating Plane L2 θ L5 L L1 Detail B Notes: 1. 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed. Symbol Dimension (inches) A A1 b b2 c2 D D1 E E1 MIN .086 - .025 .030 .018 .235 .205 .250 .170 NOM - - - - - .240 - - - MAX .094 .005 .035 .045 .035 .245 JEDEC Registration TO-252, Variation AA, Issue E, June 2004. Drawings not to scale. Doc. #: DSPD-3TO252K4 C051707 - .265 - e .090 BSC H L .370 .055 - .060 .410 .070 L1 .108 REF L2 .020 BSC L3 L4 L5 θ .035 - .045 0 - - - - .050 .040 .060 θ1 O 0O - O 10 15O Package Outline 3-Lead TO-92 Package (N3) 0.175 - 0.205 0.170 - 0.210 Seating Plane 1 2 3 0.500 MIN 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 Top View Doc. #: DSPD-3TO92N3 B062306 Note: All dimension are in inches; angles are in degrees. Package Outlines 3-Lead TO-243AA (SOT-89) Surface Mount Package (N8) 4.50 ± 0.10 1.50 ± 0.10 0.40 ± 0.05 1.72 ± 0.10 Exclusion Zone No Vias/Traces in this area. Shape of pad may vary. 4.10 ± 0.15 2.21 ± 0.08 2.45 ± 0.15 1.05 ± 0.15 0.5 ± 0.06 0.42 ± 0.06 1.50 BSC 3.00 BSC Top View Side View Bottom View Notes: 1. All dimensions are in millimeters; all angles in degrees. Doc. #: DSPD-3TO243AAN8 C103106