TL431

TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE FEATURES  The effective temperature compensation in the working range of full temperature  The typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/°C  The output voltage can be adjusted to 36V  Low dynamic output impedance, its typical value is 0.2Ω  Trapping current capability is 1 to 100mA  Low output noise voltage  Fast on-state response  Surface Mount device SOT-89 APPLICATION  Shunt Regulator  High-Current Shunt Regulator  Precision Current Limiter MECHANICAL DATA     Case: SOT-89 Case Material: Molded Plastic. UL flammability Classification Rating: 94V-0 Weight: 0.055 grams (approximate) MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Parameter Symbol Value Unit Cathode Voltage VKA 36 V Cathode Current Range (Continuous) IKA -100~+150 mA Reference Input Current Range Iref 0.05~+10 mA Power Dissipation PD 500 mW Thermal Resistance from Junction to Ambient RθJA 250 °C/W Operating Temperature Topr -20~+85 °C Junction Temperature TJ 150 °C Storage Temperature Range TSTG -55 ~+150 °C © SHENZHEN HOTTECH ELECTRONICS CO.,LTD E-mail:hkt@heketai.com 1/6 TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) Parameter Symbol Min Typ Max Unit Vref 2.475 2.5 2.525 V VKA=VREF,IKA=10mA 4.5 17 mV VKA=VREF,IKA=10mA -25°C≤TA≤+85°C Ratio of change in reference input voltage to the change in ΔVref /ΔVKA cathode voltage -1.0 -2.7 mV/V IKA=10mA,ΔVKA=10V-VREF -0.5 -2.0 mV/V IKA=10mA,ΔVKA=36V-10V Reference input current 1.5 4 µA IKA=10mA,R1=10KΩ,R2=∞ ΔIref /ΔT 0.4 1.2 µA Emitter cut-off current IKA(min) 0.45 1.0 mA VKA=VREF Off-state Cathode Current IKA(OFF) 0.05 1.0 µA VKA=36V,VREF=0 ZKA 0.15 0.5 Ω VKA=VREF,IKA=1~10mA,f≤1.0kHz Reference Input Voltage Deviation of reference input voltage over temperature ΔVref /ΔT Deviation of reference input current Over full temperature range Dynamic Impedance Iref Conditions IKA=10mA,R1=10KΩ,R2=∞, -25°C≤TA≤+85°C CLASSIFICATION OF Vref Rank 0.5% 1% 2% Range 2.487-2.513 2.475-2.525 2.450-2.550 © SHENZHEN HOTTECH ELECTRONICS CO.,LTD E-mail:hkt@heketai.com 2/6 TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE Typical Characteristics  0" &"6  1  ,:  (=.> 1  1 9:;9+0   ;1ć      9: 9 : 0"   7  0" &"6  : 8  1 8-92 4     ,:  (=>     +0 9:;9+0   ;1ć    1  1  1  1   9: 9 7HVW&LUFXLWIRU9.$ 9UHI            © SHENZHEN HOTTECH ELECTRONICS CO.,LTD E-mail:hkt@heketai.com 3/6 TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE 0 6 2  !  3 &"6 7 0" &"6 0 ƸVref, REFERENCE INPUT VOLTAGE (mV) IK=10mA Ta=25ć -4 -8 -12 -16 -20 0 5 10 15 20 25 VKA, CATHODE VOLTAGE (nA) 35 40 Test Circuit for VKA=Vref(1+R1/R2)+R1*Iref  !  3   7 92  93 700 Iref, REFERENCE INPUT CURRENT 30 (V) 600 500 400 300 200 100 IK=10mA R1=10K 0 -40 -20 0 20 40 60 Ta, AMBIENT TEMPERATURE 80 100 Test Circuit for Iref (ć) ) 0"   7 92  93 (nA) 45 Ioff, OFF-STATE CATHODE CURRENT 50 40 35 30 25 20 15 10 VKA=36V 5 Vref=0V 0 -40 -20 0 20 40 Ta, AMBIENT TEMPERATURE © SHENZHEN HOTTECH ELECTRONICS CO.,LTD 60 80 100 Test Circuit for Ioff (ć) E-mail:hkt@heketai.com 4/6 TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE SOT-89 Package Outline Dimensions Symbol Dimensions In Millimeters Dimensions In Inches Min. Max. Min. Max. A 1.400 1.600 0.055 0.063 b 0.320 0.520 0.013 0.020 b1 0.400 0.580 0.016 0.023 c 0.350 0.440 0.014 0.017 D 4.400 4.600 0.173 0.181 D1 1.550REF 0.061REF E 2.300 2.600 0.091 0.102 E1 3.940 4.250 0.155 0.167 e 1.500TYP 0.060TYP e1 3.000TYP 0.118TYP L 0.900 1.200 0.035 0.047 SOT-89 Suggested Pad Layout Note: 1.Controlling dimension: in millimeters 2.General tolerance: ±0.05mm 3.The pad layout is for reference purposes only © SHENZHEN HOTTECH ELECTRONICS CO.,LTD E-mail:hkt@heketai.com 5/6 TL431 ADJUSTABLE ACCURATE REFERENCE SOURCE SOT-89 Tape and Reel SOT-89 Embossed Carrier Tape DIMENSIONS ARE IN MILLIMETER TYPE A B C d E F P0 P P1 W SOT-89 4.85 4.45 1.85 Ø1.50 1.75 5.50 4.00 8.00 2.00 12.00 TOLERANCE ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 SOT-89 Tape Leader and Trailer SOT-89 Reel DIMENSIONS ARE IN MILLIMETER REEL OPTION 7’’ DIA TOLERANCE D D1 D2 G H I W1 W2 Ø178 54.40 13.00 R78 R25.60 R6.50 13.20 16.50 ±2 ±1 ±1 ±1 ±1 ±1 ±1 ±1 © SHENZHEN HOTTECH ELECTRONICS CO.,LTD E-mail:hkt@heketai.com 6/6