TL431L

TL431 Adjustable Reference Source &   ' The TL431 is a three-terminal adjustable shunt regulator offeringe xcellent temperature stability . This device has a typical dynamic output impedance of 0.2. The device can be used as a replacement for zener diodes in many applications. ( z The output voltage can be adjusted to 36V z Low dynamic output impedance, its typical value is 0.2 z Trapping current capability is 1 to 100mA z Low output noise voltage z Fast on -state response z The effective temperature compensation in the working range of full temperature z The typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/ ''   z Shunt Regulator z High-Current Shunt Regulator z Precision Current Limiter TL431  )*$ TL431B                                  TL431L )+*                 www.slkormicro.com ),+ 1 TL431  ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Parameter Value Symbol SOT-23 SOT-89 Unit TO-92 Cathode Voltage VKA Cathode Current Range (Continuous) IKA -100-+150 mA Reference lnput Current Range Iref 0.05-+10 mA Power Dissipation PD 300 500 770 mW RJA 417 250 162 /W Thermal Resistance from Junction to Ambient 36 V Operating JunctionTemperature TJ -40~+125  Storage Temperature Range TSTG -65~+150    "012 3!224        -.*/  Parameter Reference $nput *oltage Deviation of +eference ,nput *oltage -ver )emperature (note) Ratio -f /hange in +eference lnput *oltage to the /hange in /athode *oltage Reference $nput /urrent Deviation -f +eference $nput /urrent -ver 0ull )emperature +ange Minimum /athode /urrent for +egulation Off-state /athode /urrent Dynamic $mpedance Symbol Vref ƸVref /ƸT ƸVref /ƸVKA lref Ƹlref /ƸT IKA(min) Test conditions VKA=VREF, IKA=10mA VKA =VREF, IKA =10mA TMINTaTMAX ƸVKA =10V~VREF IKA=10mA ƸVKA =36V~10V IKA= 10mA,R1=10# R2= M$% T& M'(%$) 2.4 2.5 2.5 4.5 17 -1.0 -2.7  .V/V -0.5 -2.0 .V/V  1.5 4 A V   lKA=10mA, R1=10# R2= TA=-25 to 85ć 0.4 1.2 VKA=VREF 0.45 1.0 mA  0.05 1.0 A IKA(OFF) VKA=36V ,VREF=0 VKA=VREF, lKA=1 to 100mA ZKA f1.0#Hz 0.15 0.5 Note:TMIN=1  ,TMAX=+1 CLASSIFICATION RI Vref Rank Range www.slkormicro.com mV   0.5% 2.487-2.513 2 1% 2.475-2.525 A   TL431  0" &"6  1  ,:  (=.> 1  1 9:;9+0   ;1ć      9: 9 : 0"   7  0" &"6  : 8  1 8-92 4     ,:  (=>        +0 9:;9+0   ;1ć 1  1  1  1   9: 9 2600 VREF, REFERENCE INPUT VOLTAGE (mV) 7HVW&LUFXLWIRU9.$ 9UHI Reference Input Voltage versus Ambient Temperature 2550 2500 2450 2400 VKA=VREF IK=10mA 2350 -40 -25 0 25 50 75 100 125 Ta, AMBIENT TEM PERATURE (℃) www.slkormicro.com 3 TL431 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 30 VKA, CATHODE VOLTAGE 40 Test Circuit for VKA=Vref(1+R1/R2)+R1*Iref Reference Input Current versus Ambient Temperature 700 IREF, REFERENCE INPUT CURRENT (nA) 35 (V) 600 500 400 300 200 100 IK=10mA R1=10KΩ 0 -40 -25 0 25 50 75 100 Test Circuit for Iref 125 Ta, AMBIENT TEMPERATURE (℃) Off-State Cathode Current versus Ambient Temperature 60 Ioff, OFF-STATE CATHODE CURRENT (nA) 55 50 45 40 35 30 25 20 15 10 VKA=36V VREF=0V 5 0 -40 -25 0 25 50 75 100 Test Circuit for Ioff 125 Ta, AMBIENT TEMPERATURE (℃) www.slkormicro.com 4 TL431 )*$ '!:6 2  29 2"  Symbol A A1 A2 b c D E E1 e e1 L L1 ۷ )*$ 66 ' 5"  www.slkormicro.com 5 Dimensions In Millimeters Min Max 0.900 1.150 0.000 0.100 0.900 1.050 0.300 0.500 0.080 0.150 2.800 3.000 1.200 1.400 2.250 2.550 0.950 TYP 1.800 2.000 0.550 REF 0.300 0.500 0° 8° Dimensions In Inches Min Max 0.035 0.045 0.000 0.004 0.035 0.041 0.012 0.020 0.003 0.006 0.110 0.118 0.047 0.055 0.089 0.100 0.037 TYP 0.071 0.079 0.022 REF 0.012 0.020 0°° TL431 SOT-89-3L Package Outline Dimensions 'LPHQVLRQV,Q0LOOLPHWHUV 0D[ 0LQ           5()     7