SEMICONDUCTOR KCR405T TECHNICAL DATA Constant-Current LED Driver Transistor LED Drive Application. FEATURES E Supplies stable bias current even at low battery voltage. K K B 1 6 G 2 5 G Ideal for stabilizing bias current of LEDs. 3 4 DIM A B C D E D F A Negative temperature coefficient protects LEDs against thermal overload. EQUIVALENT CIRCUIT 6 5 4 6 5 Lot No. Type Name 1 2 MAXIMUM RATING (Ta=25 2 J 0.95 H I _ 0.05 0.16 + 0.00-0.10 J 0.25+0.25/-0.15 K L 0.60 0.55 H 1. GND 2. Output Current 3. Output Current 4. Source Voltage 5. Output Current 6. Rext A B 1 3 L J 4 I C MARKING F G MILLIMETERS _ 0.2 2.9 + 1.6+0.2/-0.1 _ 0.05 0.70 + _ 0.1 0.4 + 2.8+0.2/-0.3 _ 0.2 1.9 + TS6 3 ) CHARACTERISTIC SYMBOL RATING UNIT Source Voltage VS 40 V Output Current IO 65 mA Output Voltage VO 38 V Reverse Voltage Between All Terminals VR 0.5 V Power Dissipation PD* 900 mW Tj 150 Tstg -55 150 Junction Temperature Storage Temperature Range *Package mounted on a ceramic board (600㎟×0.8㎜) 2009. 7. 7 Revision No : 0 1/3 KCR405T ELECTRICAL CHARACTERISTICS (Ta=25 ) CHARACTERISTIC SYMBOL BVCEO Collector-Emitter Breakdown Voltage TEST CONDITION MIN. TYP. MAX. UNIT IC=1mA, IB=0 40 - - V Supply Current IS VS=10V 340 420 500 ㎂ DC Current Gain hFE IC=50mA, VCE=1V 100 220 470 - Internal Resistor Rint IRint=50mA 13 17 22 Ω Output Current IO VS=10V 45 50 55 mA Voltage Drop (VS-VE) VDrop IO=50mA 0.75 0.8 0.85 V Lowest Sufficient Battery Voltage Overhead VSmin IO>18mA - 1.4 - V Output Current Change Versus Ta ΔIO/IO VS=10V - -0.15 - %/K Output Current Change Versus VS ΔIO/IO VS=10V - 1 - %/V APPLICATION CIRCUIT +VS 4 Rext 6 1 2, 3, 5 LED LED 2009. 7. 7 Revision No : 0 2/3 KCR405T IO - VS IS - VS 2.0 100 Supply Current IS (mA) 56 Ohm Output Current IO (mA) 82 Ohm open 10 5 10 15 20 25 30 35 40 45 20 C -40 C 1.4 1.2 1.0 0.8 0.6 0.4 0 50 0 5 10 15 20 25 30 35 Source Voltage VS (V) Source Voltage VS (V) IO - VS IO - V S 100 40 45 50 100 VS-VO=1V Ta=25 C 0 5 10 15 20 25 30 35 40 45 -40 C Output Current IO (mA) Output Current IO (mA) VS-VO=1.2V,2V 10 1.6 0.2 VS-VO=1.4V 0 80 C 1.8 50 20 C 80 C 10 VS-VO=1.4V 0 5 10 15 20 25 30 35 40 45 50 Source Voltage VS (V) Source Voltage VS (V) IO - Rext Output Current IO (mA) 100 10 10 80 C 20 C -40 C VS=10V VS-VO=1.4V 100 External Resistor Rext (Ω) 2009. 7. 7 Revision No : 0 3/3