Transcription of TL431 TL432 - STMicroelectronics
1 This is information on a product in full production. February 2022 DocID4467 Rev 161/22TL431TL432 Automotive adjustable voltage referenceDatasheet - production dataFeatures AEC-Q100 qualified Adjustable output voltage: to 36 V Sink current capability: 1 to 100 mA Typical output impedance: voltage precision only on the TL431B version 1% and 2% voltage precision Automotive temp. range -40 C to +125 CApplications Power supply Industrial AutomotiveDescriptionThe TL431 and TL432 are adjustable shunt voltage references with guaranteed temperature stability over the entire operating temperature range. The device temperature range is extended for the automotive version from -40 C up to +125 C.
2 The output voltage can be set to any value between and 36 V with two external resistors. The TL431 and TL432 operate with a wide current range from 1 to 100 mA with a typical dynamic impedance of .DSO-8(Batwing plastic micropackage)ZTO-92(Plastic package) , TL4322/22 DocID4467 Rev 16 Contents1 Schematic diagrams .. 32 Absolute maximum ratings and operating conditions .. 43 Electrical characteristics .. 5 Reference input voltage deviation overtemperature range .. 84 Package information .. package information .. ammopack and tape and reel package information .. (bulk) package information .. package information.
3 Package information .. package information .. 185 Ordering information .. 196 Revision history .. 21 DocID4467 Rev 163/22TL431, TL432 Schematic diagrams221 Schematic diagramsFigure 1. TO-92 pin connections (top view)Figure 2. SO-8 batwing pin connections (top view)Figure 3. SOT23-5 and SOT23-3 pin connections (top view)Figure 4. SOT323-6 pin connections (top view)Figure 5. TL431 and TL432 block diagramSO8 AnodeCathodeRef1237846NC5 AnodeNCSOT23-3 SOT23-5 NCNCC athodeRefAnode12345 CathodeRefAnode123TL431TL431TL432 AnodeCathodeVrefRefAbsolute maximum ratings and operating conditionsTL431, TL4324/22 DocID4467 Rev 162 Absolute maximum ratings and operating conditions Table 1.
4 Absolute maximum ratingsSymbolParameterValueUnitVKAC athode to anode voltage37 VIkContinuous cathode current range-100 to +150mAIrefReference input current to +10mARthjcThermal resistance junction to caseTO-92SO-8 batwingSOT23-3 LSOT23-5 LSOT323-6L573013667110 C/WRthjaThermal resistance junction to ambientTO-92SO-8 batwingSOT23-3 LSOT23-5 LSOT323-6L20085248157221 C/WTstgStorage temperature range-65 to +150 CTJJ unction temperature150 CESDTL431IY, TL431 AIY-T: HBM (human body model)(1) TL431 - TL432 : HBM (human body model)MM: machine model(2)CDM: charged device model(3)1. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a k resistor between two pins of the device.
5 This is done for all couples of connected pin combinations while the other pins are floating. 2. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). This is done for all couples of connected pin combinations while the other pins are Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all 2. Operating conditionsSymbolParameterValueUnitVKAC athode to anode voltageVref to 36 VIkCathode current1 to 100mAToperOperating free-air temperature rangeTL431C/ACTL431I/AI - TL432I/AITL431 BTL431IY/AIY0 to +70-40 to +105-40 to +125-40 to +125 CDocID4467 Rev 165/22TL431, TL432 Electrical characteristics223 Electrical characteristics Table 3.
6 TL431C (Tamb = 25 C unless otherwise specified) Max. input voltageVKA = Vref, Ik = 10 mA, Tamb = 25 CTmin Tamb VrefReference input voltage deviation overtemperature range (1)VKA = Vref, Ik = 10 mA, Tmin Tamb Tmax-317-315mV Ratio of change in reference input voltage to change in cathode to anode voltageIk = 10 mA - VKA = 10 V to Vref VKA = 36 V to 10 input currentIk = 10 mA, R1 = 10 k , R2 = Tamb = 25 CTmin Tamb A IrefReference input current deviation overtemperature rangeIk = 10 mA, R1 = 10 k , R2 = Tmin Tamb AIminMinimum cathode current for regulationVKA = cathode current ZKA Dynamic impedance(2)
7 VKA = Vref, Ik = 1 to 100 mA, f 1 1. See definition of Section : Reference input voltage deviation overtemperature The dynamic impedance is defined as |ZKA| = Vref Vka------------ VKAIk ----------------Electrical characteristicsTL431, TL4326/22 DocID4467 Rev 16 Table 4. TL431B, TL432B (Tamb = 25 C unless otherwise specified)SymbolParameterTL431B, input voltageVKA = Vref, Ik = 10 mA, Tamb = 25 CTmin Tamb VrefReference input voltage deviation overtemperature range (1)VKA = Vref, Ik = 10 mA, Tmin Tamb Tmax-730mV Ratio of change in reference input voltage to change in cathode to anode voltageIk = 10 mA - VKA = 10 V to Vref VKA = 36 V to 10 input currentIk = 10 mA, R1 = 10 k , R2 = Tamb = 25 CTmin Tamb A IrefReference input current deviation overtemperature rangeIk = 10 mA, R1 = 10 k , R2 = Tmin Tamb AIminMinimum cathode current for regulationVKA = cathode current -180500nA ZKA Dynamic impedance(2)VKA = Vref, Ik = 1 to 100 mA, f 1 1.
8 See definition of Section : Reference input voltage deviation overtemperature The dynamic impedance is defined as |ZKA| = Vref Vka------------ VKAIk ----------------DocID4467 Rev 167/22TL431, TL432 Electrical characteristics22 Table 5. TL431I/TL432I (Tamb = 25 C unless otherwise specified)SymbolParameterTL431I/ TL432 ITL431 Max. input voltageVKA = Vref, Ik = 10 mA, Tamb = 25 CTmin Tamb VrefReference input voltage deviation overtemperature range (1)VKA = Vref, Ik =10 mA, Tmin Tamb Tmax-730-730mVRatio of change in reference input voltage to change in cathode to anode voltageIk = 10 mA, VKA = 10 V to Vref VKA = 36 V to 10 input current Ik = 10 mA, R1 = 10 k , R2 = Tamb = 25 CTmin Tamb A IrefReference input current deviation overtemperature rangeIk = 10 mA, R1 = 10 k , R2 = Tmin Tamb AIminMinimum cathode current for regulationVKA = cathode current ZKA Dynamic impedance(2)
9 VKA = Vref, Ik = 1 to 100 mA, f 1 1. See definition of Section : Reference input voltage deviation overtemperature range The dynamic impedance is defined as |ZKA| = Vref Vka------------ VKAIk ----------------Electrical characteristicsTL431, TL4328/22 DocID4467 Rev 16 Reference input voltage deviation overtemperature range Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. Vref = Vref max - Vref minFigure 6. Reference input voltage deviation overtemperature rangeTable 6. TL431IY (Tamb = 25 C unless otherwise specified) Max. input voltageVKA = Vref, Ik = 10 mATmin Tamb VrefReference input voltage deviation overtemperature range(1)VKA = Vref, Ik = 10 mA, Tmin Tamb Tmax-730-730mVRatio of change in reference input voltage to change in cathode to anode voltageIk = 10 mA, VKA = 10 V to Vref Ik = 10 mA, VKA = 36 V to 10 input current Ik = 10 mA, R1 = 10 k , R2 = Tmin Tamb A IrefReference input current deviation overtemperature rangeIk = 10 mA, R1 = 10 k , R2 = , Tmin Tamb AIminMinimum cathode current for regulationVKA = cathode current Tmin Tamb ZKA Dynamic impedance(2)
10 VKA = Vref, Ik = 1 to 100 mA, F 1 1. See definition of Section : Reference input voltage deviation overtemperature range The dynamic impedance is defined as |ZKA| = Vref Vka------------ VKAIk ----------------DocID4467 Rev 169/22TL431, TL432 Electrical characteristics22 Figure 7. Test circuit for VKA = Vref Figure 8. Test circuit for programming modeInputVKAVREFIK=10mAOutputRVKA = VREF + R1 x IREF 1R1R2-------+()InputVKAVREFIKR1R2 IREFRO utputFigure 9. Test circuit for Ioff Figure 10. Test circuit for phase margin and voltage gainVKA=36 VIOFFI nputVREFIK=10mA Output10 F10 F15k Figure 11.
