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| tm TE CH T6335A Constant Current Regulator FEATURES * Constant Current Regulator * Constant Current Option : 150/210/225/240/260/280/300/320/350 mA * Low Dropout Voltage * Low 0.1 uA Shutdown Supply Current * SOT-89 and TO-252 lead-free Package * ESD Human Body Mode Over 5KV * 2.7V to 5V Supply Voltage Range * Build in Thermal Protect 160 C GENERAL DESCRIPTION The T6335A low-dropout bias supply for white LED is a high-performance used in conventional white LED designs. The T6335A has lower bias variation with supply voltage variation, significantly lower dropout voltage Low Shutdown Current in some applications, significantly improved efficiency from DC 2.7V to 5V. The T6335A is available in SOT-89 and TO-252 lead-free package. APPLICATIONS * Flash Light * Lighting * Portable Communication Devices * Handheld Electronics * DC/DC LED driver PART NUMBER EXAMPLES Part no. T6335A-350AXG T6335A-350AWG Current 350mA 350mA Package type SOT-89 TO-252 TYPICAL APPLICATION CIRCUITS VIN 2.7V~5V T6335A-150AXG T6335A-150AWG 150mA 150mA SOT-89 TO-252 PIN ARRANGEMENT (Top view) SOT-89 TO-252 OUT T6335A VDD GND OUT GND VDD OUT GND VDD TM Technology Inc. reserves the right to change products or specifications without notice. P. 1 Publication Date: MAR. 2007 Revision: A tm SYMBOL OUT VSS VDD TE CH T6335A PIN DESCRIPTION Pin no. 1 2 3 DESCRIPTION LED Cathode Connection. Ground Power supply ABSOLUTE MAXIMUM RATINGS Parameter Voltage on any pin relative to GND Operating Temperature Rang Maximum Soldering Temperature (at leads, 10 sec) Storage Temperature Rang Continuous Power Dissipation ( TA = +70C ) Symbol VIN TA TLEAD TS Value -0.3 to 6 -40 to +85 300 -65 to +150 1 Unit V C C C W Electrical Characteristics (Typical values are at TA =25C) Symbol VDD Description Operating voltage range Conditions VDD is power supply input Min. Typ. Max 2.7 329 300 282 263 244 225 211 197 141 350 320 300 280 260 240 225 210 150 160 0.2 1 5 371 339 318 296 275 254 238 222 159 Unit V mA mA mA mA mA mA mA mA mA C uA T6335A-350 T6335A-320 T6335A-300 T6335A-280 ILED Maximum LED sink current VDD = 4.5V VLED =3.5V T6335A-260 T6335A-240 T6335A-225 T6335A-210 T6335A-150 TTP ILSD Thermat Protect LED leakage current in shutdown VDD = GND, VLED = 5V TM Technology Inc. reserves the right to change products or specifications without notice. P.2 Publication Date: MAR. 2007 Revision: A tm Test Circuit VDD TE CH T6335A Typical Operating Characteristics OUT T6335A VDD GND VDD VS. Iout Curve 400 350 350mA 300mA 280mA 260mA 240mA 225mA Iout(mA) 300 250 200 150 3 3.2 3.4 3.6 3.8 VDD(V) 4 4.2 4.4 4.6 4.8 5 TM Technology Inc. reserves the right to change products or specifications without notice. P.3 Publication Date: MAR. 2007 Revision: A tm TE CH T6335A PACKAGE DIMENSIONS SOT-89 D D1 POLISH ED (2X) Symbol A B B1 C D D1 E H e e1 L Dimension in mm Min. Max. 1.40 1.60 0.44 0.56 0.36 0.48 0.35 0.44 4.40 4.60 1.35 1.83 2.29 2.60 3.94 4.25 1.50 BSC 3.00 BSC 0.89 1.2 E L H B1 10'(2X ) 1 2 B 3 C A e e1 TO-252 Symbol E A A1 b2 4 L2 SEATING PLANE c1 E1 D1 D H 2 1 e 3 L1 c b e1 L A A1 b b2 c c1 D E D1 E1 e e1 H L L1 L2 Dimension in inch Min. Max. 0.086 0.094 0.040 0.050 0.024 TYP. 0.205 0.215 0.018 0.023 0.018 0.023 0.210 0.220 0.250 0.265 0.180 0.150 0.090 BSC. 0.180 BSC. 0.370 0.410 0.020 0.025 0.040 0.060 0.080 TM Technology Inc. reserves the right to change products or specifications without notice. P.4 Publication Date: MAR. 2007 Revision: A |
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