TL431

厂商：
MDD(辰达半导体)
封装：
SOT-23
描述：
VKA=37V，IKA=100mA，PD=300mW

数据手册：

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数据手册
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TL431 数据手册

TL431 Adjustable Reference Source TL431 Adjustable Reference Source TL#$% )*$ ),+ Adjustable Accurate Reference Source & ' The TL431 is a three-terminal adjustable shunt regulator offering excellent temperature stability . This device has a typical dynamic output impedance of 0.2. The device can be used as areplacement for zener diodes in many applications )+* ( z z z z z z z The output voltage can be adjusted to 36V Low dynamic output impedance, its typical value is 0.2 Trapping current capability is 1 to 100mA Low output noise voltage Fast on -state response 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/ 2ANODE 3CATHODE '' z z z Shunt Regulator High-Current Shunt Regulator Precision Current Limiter FUNCTION BLOCK DIAGRAM Block Diagram Equivalent Ciruit CATHODE(K) CATHODE REFERENCE 2.5V REF REFERENCE(R) ANODE(A) ANODE http://www.microdiode.com Rev:2024A1 Page :1 TL431 Adjustable Reference Source ORDERING INFORMATION Part Number MARKING (1) Package Packing Method Pack Quantity TL 431 Reel 3000pcs/Reel TL 431 Reel 1000pcs/Reel TL TL431 (2) XXX !"# 1000pcs/Bag TL TL431 (2) XXX x 2000pcs/Bo Notes: (1). Solid dot = Green molding compound device, if none, the normal device. (2). ;;; &RGH ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Value Parameter Symbol Unit SOT-23 23 TO-92 SOT-89 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 Thermal Resistance from Junction to Ambient RJA 417 250 162 /W Operating Temperature Topr -25~+85 Junction Temperature TJ 150 Storage Temperature Range TSTG -65~+150 V 37 TL431-0.3% -.*/ "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 $mpedance Symbol Cir-Cuit ref 1 VKA=VREF, IKA=10mA 1 VKA =VREF, IKA =10mA TMINTaTMAX ƸVKA =10V~VREF IKA=10mA ƸVKA =36V~10V IKA= 10mA,R1=10# R2= ƸVref /ƸT ƸV ref /ƸVKA lref 2 2 Test conditions Ƹlref /ƸT 2 lKA=10mA, R1=10# R2= TA=-25 to 85ć IKA(min) 1 VKA=VREF IKA(OFF) 3 ZKA 1 VKA=36V ,VREF=0 VKA=VREF, lKA=1 to 100mA f1.0#Hz M$% T& M'(%$) 2.487 2.495 2.502 3 17 -1.4 -2.7 .V/V -1 -2 . V/V 1.8 4 A 0.4 V mV 1.2 A 0.15 mA 0.2 1 A 0.2 0.5 Note:TMIN=1 ,TMAX=+1 http://www.microdiode.com Rev:2024A1 Page :2 TL431 Adjustable Reference Source TL431-0.5% -.*/ "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 $mpedance Symbol Cir-Cuit ref 1 VKA=VREF, IKA=10mA ƸVref /ƸT 1 ƸV ref /ƸVKA 2 VKA =VREF, IKA =10mA TMINTaTMAX ƸVKA =10V~VREF IKA=10mA ƸVKA =36V~10V IKA= 10mA,R1=10# R2= 2 lref Test conditions Ƹlref /ƸT 2 lKA=10mA, R1=10# R2= TA=-25 to 85ć IKA(min) 1 VKA=VREF IKA(OFF) 3 ZKA 1 VKA=36V ,VREF=0 VKA=VREF, lKA=1 to 100mA f1.0#Hz M$% T& M'(%$) 2.482 2.495 2.507 3 17 -1.4 -2.7 .V/V -1 -2 . V/V 1.8 4 A 0.4 V mV 1.2 A 0.15 mA 0.2 1 A 0.2 0.5 TL431-1% -.*/ "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 $mpedance Symbol Cir-Cuit ref conditions M$% T& M'(%$) 1 VKA=VREF, IKA=10mA 2.47 2.495 2.52 ƸVref /ƸT 1 3 17 -1.4 -2.7 ƸV ref /ƸVKA .V/V 2 VKA =VREF, IKA =10mA TMINTaTMAX ƸVKA =10V~VREF IKA=10mA ƸVKA =36V~10V IKA= 10mA,R1=10# R2= -1 -2 . V/V 1.8 4 A 2 lref Test Ƹlref /ƸT 2 lKA=10mA, R1=10# R2= TA=-25 to 85ć IKA(min) 1 VKA=VREF IKA(OFF) 3 ZKA 1 VKA=36V ,VREF=0 VKA=VREF, lKA=1 to 100mA f1.0#Hz 0.4 V mV 1.2 A 0.15 mA 0.2 1 A 0.2 0.5 Note:TMIN=1 ,TMAX=+1 CLASSIFICATION RI Vref Rank 0.3% 0.5% 1% Range 2.487-2.502 2.482-2.507 2.47-2.52 http://www.microdiode.com Rev:2024A1 Page :3 TL431 Adjustable Reference Source Test Circuit Fig. 1 Test Circuit for V INPUT KA =V REF VKA IKA Fig. 2 Test Circuit for V INPUT R1 DUT R2 VREF KA ≥V REF VKA IKA ＩREF DUT VREF VKA=VREF(1+R1/R2)+IREF R1 Fig. ３ Test Circuit for IKA （off) VKA INPUT IKA DUT http://www.microdiode.com Rev:2024A1 Page :4 TL431 Adjustable Reference Source Typical Performance Characteristics REFERENCE VOLTAGE vs FREE-AIR TEMPERATURE† REFERENCE CURRENT vs FREE-AIR TEMPERATURE † 2600 5 R1=10㏀ R2=∞ IKA=10㎃ 2580 4 VREF-REFERENCE CURRENT-uA VREF-REFERENCE VOLTAGE-mV 2560 2540 2520 2500 2480 2460 2440 3 2 1 2420 2400 0 -75 -50 -25 0 25 50 75 100 125 -75 -50 TA-FREE-AIR TEMPERATURE-℃ -25 0 25 50 75 100 125 TA-FREE-AIR TEMPERATURE-℃ † Data is applicable only within the recommended operating free-air † Data is applicable only within the recommended operating free-air temperature ranges of the various devices. temperature ranges of the various devices. ‡ Data is for devices having the indicated value of VREF at IKA=10mA, TA=25℃ Figure 4. Figure 5. CATHODE CURRENT vs CATHODE VOLTAGE CATHODE CURRENT vs CATHODE VOLTAGE 150 800 VKA=VERF TA=25℃ VKA=VREF TA=25℃ 125 600 IKA-CATHODE CURRENT-uA IKA-CATHODE CURRENT-mA 100 75 50 25 0 IMIN 400 200 -25 -50 0 -75 -100 -200 -2 -1 0 1 2 3 -1 0 1 VKA-CATHODE VOLTAGE-V VKA-CATHODE VOLTAGE-V Figure 6. Figure 7. 2 3 The curve above is for reference only. http://www.microdiode.com Rev:2024A1 Page :5 TL431 Adjustable Reference Source Typical Performance Characteristics OFF-STATE CATHODE CURRENT vs FREE-AIR TEMPERATURE† RATIO DELTA REFERENCE VOLTAGE TO DELTA CATHODE VOLTAGE vs FREE-AIR TEMPERATURE † 2.5 -0.85 VKA=3V TO 36V -0.95 2 ΔVREF/ΔVKA-㎷/V IOFF-OFFSTATE CATHODE CURRE T N VKA=36 V 1.5 -1.05 -1.15 1 -1.25 0.5 -1.35 0 -1.45 -75 -50 -25 0 25 50 75 100 -75 125 TA-FREE-AIR TEMPERATURE-℃ -50 -25 0 25 50 75 100 125 TA-FREE-AIR TEMPERATURE-℃ † Data is applicable only within the recommended operating free-air † Data is applicable only within the recommended operating free-air temperature ranges of the various devices. temperature ranges of the various devices. Figure 8. Figure 9. EQUIVALENT INPUT NOISE VOLTAGE VS FREQUENCY 260 IO=10㎃ TA=25℃ VIN-EQUIVALENT NOISE VOLTAGE-㎵ 240 220 200 180 160 140 120 100 10 100 1K 10K 100K f-FREQUENCY-㎐ Figure 10. The curve above is for reference only. http://www.microdiode.com Rev:2024A1 Page :6 TL431 Adjustable Reference Source Typical Performance Characteristics REFERENCE IMPEDANCE VS FREQUENCY 100 IKA=10㎃ TA=25℃ ｜ZKA｜-REFERENCE IMPEDANCE 1㏀ OUTPUT 10 ~ IKA 50Ω + GND 1 Test Circuit for Reference Impedance 0.1 1K 10K 100K 1M 10M f-FREQUENCY-㎐ Figure 11. REFERENCE IMPEDANCE VS FREQUENCY 6 TA=25℃ INPUT 220Ω ｜ZKA｜-REFERENCE IMPEDANCE 5 OUTPUT 4 PULSE GENERATOR f=100㎑ 3 50Ω OUTPUT GND 2 1 Test Circuit for Pulse Response 0 -1 0 1 2 3 4 5 6 7 t-TIME-㎲ Figure 12. The curve above is for reference only. http://www.microdiode.com Rev:2024A1 Page :7 TL431 Adjustable Reference Source Application Information R (SEE NOTE A) VO VI(BATT) R1 0.1% VREF TL431N VO =（1+ R1 VREF R2 ） R2 0.1% RETURN nimum VI(BATT) NOTE A : R Should provide cathode current≥1㎃ to the TL431N at mi Figure 13. Shunt Regulator VI(BATT) IN LM7805 OUT VO R1 COMMON VO =（1+ TL431N R1 V R2 ） REF MINIMUM V O=VREF+5V R2 Figure 14. Output Control of a 3-Terminal Fixed Regulator VO VI(BATT) R1 VO =（1+ R2 RETURN R1 R2 ）VREF TL431N Figure 15. High-Current Shunt Regulator http://www.microdiode.com Rev:2024A1 Page :8 TL431 Adjustable Reference Source SOT-23 Outlitne Drawing SOT-23 Package Outline Dimensions L L1 E E1 θ 1 e Symbol A A1 b c D E E1 e L L1 θ Dimensions In Millimeters Min Typ Max 0.90 1.40 0.10 0.00 0.30 0.50 0.20 0.08 2.80 2.90 3.10 1.20 1.60 2.25 2.80 1.80 1.90 2.00 0.10 0.50 0.4 0° 0.55 10° SOT-23 Suggested Pad Layout 0.037 0.95 0.037 0.95 Note: 1.Controlling dimension:in/millimeters. 2.General tolerance: ±0.05mm. 3.The pad layout is for reference purposes only. 0.079 2.0 0.035 0.9 0.031 0.8 http://www.microdiode.com inches mm Rev:2024A1 Page :9 TL431 Adjustable Reference Source SOT-23 Tape and Reel Packaging Description: SOT-23 parts are shipped in tape. The carrier tape is made from a dissipative (carbon filled) polycarbonate resin. The cover tape is a multilayer film (Heat Activated Adhesive in nature) primarily composed of polyester film,adhesive laye,sealant, and anti-static sprayed agent.These reeled parts In standard option are shipped with 3,000 units per 7" or 17.8cm diameter reel. The reels are clear in color and is made of polystyrene plastic (anti-static coated). 3000 pcs http://www.microdiode.com 7 Inch 45,000 pcs 203×203×195 180,000 pcs 438×438×220 Rev:2024A1 Page :10 TL431 Adjustable Reference Source SOT-89-3L Outlitne Drawing SOT-89-3L Package Outline Dimensions Symbol A b b1 c D D1 E E1 e e1 L Dimensions In Millimeters Max Min 1.400 1.600 0.320 0.520 0.400 0.580 0.350 0.440 4.400 4.600 1.550 REF. 2.300 2.600 3.940 4.250 1.500 TYP. 3.000 TYP. 0.900 1.200 Dimensions In Inches Min Max 0.055 0.063 0.013 0.020 0.016 0.023 0.014 0.017 0.173 0.181 0.061 REF. 0.091 0.102 0.155 0.167 0.060 TYP. 0.118 TYP. 0.035 0.047 SOT-89-3L Suggested Pad Layout Note: 1.Controlling dimension:in/millimeters. 2.General tolerance: ±0.05mm. 3.The pad layout is for reference purposes only. http://www.microdiode.com Rev:2024A1 Page :11 TL431 Adjustable Reference Source SOT- 89-3L Tape and Reel Packaging Description: SOT-89-3L parts are shipped in tape. The carrier tape is made from a dissipative (carbon filled) polycarbonate resin. The cover tape is a multilayer film (Heat Activated Adhesive in nature) primarily composed of polyester film,adhesive laye,sealant, and anti-static sprayed agent.These reeled parts In standard option are shipped with 1,000 units per 7" or 18cm diameter reel. The reels are clear in color and is made of polystyrene plastic (anti-static coated). 1000 pcs http://www.microdiode.com 7 Inch 10,000 pcs 203×203×195 40,000 pcs 438×438×220 Rev:2024A1 Page :12 TL431 Adjustable Reference Source TO-92 Outlitne Drawing TO-92 Package Outline Dimensions 59" A A1 b c D D1 E e e1 L h 29 2" ;229 29 2" !0 ;2 ;< ;2 ;< 3.300 3.700 0.130 0.146 1.100 1.400 0.043 0.055 0.380 0.550 0.015 0.022 0.360 0.510 0.014 0.020 4. 4.700 8 1 3.430 0.135 4.300 4.700 0.169 0.185 1.270 TYP 0.050 TYP 2.440 2.640 0.096 0.104 14.100 14.500 0.555 0.571 1.600 0.063 0.000 0.380 0.000 0.015 TO-92 Suggested Pad Layout Note: 1.Controlling dimension:in/millimeters. 2.General tolerance: ±0.05mm. 3.The pad layout is for reference purposes only. http://www.microdiode.com Rev:2024A1 Page :13 TL431 Adjustable Reference Source TO-92 Tape and Reel TO-92 Package Tapeing Dimension Package TO-92 2,000 pcs http://www.microdiode.com 333×162×43 20,000 pcs 350×340×250 Rev:2024A1 Page :14

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