TL431中文資料簡(jiǎn)介

1、TL431中文資料簡(jiǎn)介介紹：TL431是一個(gè)有良好的熱穩(wěn)定性能的三端可調(diào)分流基準(zhǔn)電壓源。它的輸岀電壓用兩個(gè)電阻就可以任意地設(shè)置到從 Vref ()到36V范圍內(nèi)的任何值。該器件的典型動(dòng)態(tài)阻抗為Q,在很多應(yīng)用中可以用它代替齊納二極管，例如，數(shù)字電壓表，運(yùn)放電路、可調(diào)壓電源，開關(guān)電源等等。特點(diǎn)：?可編程輸岀電壓為 36V?電壓參考誤差： 學(xué)，典型值 25 C ( TL431B)?低動(dòng)態(tài)輸岀阻抗，典型 Q?負(fù)載電流能力 to 100mA?等效全范圍溫度系數(shù) 50 ppm/ C典型?溫度補(bǔ)償操作全額定工作溫度范圍?低輸出噪聲電壓Reference參靑瑞Anode 正極 Cathode 負(fù)極LP SUF

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3、epresenutive 日lock Oiagfiin圖4 TL431符號(hào)及內(nèi)部方框圖二和矢| KAroletA.-圖5 TL431內(nèi)部電路圖MAXIMUM RATINGS (Full operat ing ambie nt temperature range applies, uni ess otherwise noted.)最大額定值(環(huán)境溫度范圍適用，除非另有說明。)Rati ng參數(shù)Symbol符號(hào)數(shù)值Unit單位Cathode to Anode Voltage 陰極陽極電壓VKA37 卜Cathode Curre nt Ra nge, Co ntin uous 陰極電流范圍，連續(xù)IK

4、-00 to +150mARefere nee In put Curre nt Ran ge, Co ntin uous參考輸入電流范圍，連續(xù)Iref-to +10mAOperat in gJu ncti on Temperature 工作結(jié)溫TJ150COperati ng Ambie ntTemperature Range 操作環(huán)境 溫度范圍TL431I,TL431AI, TL431BITA-40 to +85CTL431C, TL431AC, TL431BC0 to +70StorageTemperature Range 儲(chǔ)存溫度范圍Tstg-5 to +150CTotal Power

5、Dissipation 總耗散 功率 常溫 TA = 25 C Derate above 25 C AmbientTemperatureD, LP后綴塑封PDWP后綴塑封DM后綴塑封Total Power Dissipati on TC = 25 C Derate above 25 C Case Temperature 總耗散功率夕卜 殼溫度D, LP后綴塑封PDWP后綴塑封RECOMMENDED OPERATING CONDITIO N 建議操作條件Con dition 條件Symbol符號(hào)Min最大值Max最小值Un it單位Cathode to Anode Voltage 陰極陽極電壓V

6、KAVref36VCathode Current 陰極電流IK100mATHERMAL CHARACTERISTIC熱特性Characteristic 特性Symbol符號(hào)D, LP后綴封 裝P后綴封裝DM后綴封裝Un it單位Thermal Resista nee, Jun eti on -o -mbie nt 熱阻，結(jié)點(diǎn)到環(huán)境RqJA178114240C /WThermal Resista nee, Jun eti on -o -Case 熱 阻，結(jié)到外殼RqJC8341C /WELECTRICAL CHARACTERISTICS(TA=25unless otherwise noted.)

7、電氣特性(25 C，除非另有說明。)Characteristic 特性Symbol符號(hào)TL431ITL431CUn it單位最小值典型值最大值最小值典型值最大值Refere nee In putVoltage (Figure 1)參 考輸入電壓 VKA =Vref, IK = 10 mATA = 25CVTA = Tlow to Thigh(Note 1)VrefRefere nee In put Voltage Deviati on Over Temperature Range參考輸入電壓偏差 溫度范圍 (Figure 1, Notes 1,2) VKA= Vref, IK = 10 mAD

8、Vref3017mVRatio of Change in Refere nee In put Voltage to Change n Cathode to Anode Voltage IK = 10 mA (Figure 2), VKA = 10 V to VrefmV/V VKA=36V to 10 V Vref- VKARefere nee In putCurrent (Figure 2)參考輸入電流IK =10 mA, R1 = 10k, R2=ooTA = 25CIref卩ATA = Tlow to Thigh(Note 1)Refere nee In put Curre nt Dev

9、iati on Over Temperature Range參考輸入電流偏差 溫度范圍 (Figure 2, Note 1,4) IK = 10 mA, R1 = 10 k, R2 =oDIref卩AMini mum Cathode Curre nt ForRegulation VKA = Vref (Figure 1) 最小 陰極電流調(diào)節(jié)IminmAOff -Jtate Cathode Current (Figure 3) VKA = 36 V, Vref = 0 V斷態(tài)陰極電流Ioff26010002601000nADyn amie Impeda nee (Figure 1, Note 3

10、) 動(dòng)態(tài)阻抗 VKA = Vref, DIK= to 100mA f3|ZKA|QELECTRICAL CHARACTERISTICS (TA =25u nless otherwise no ted.)電氣特性(25 C,除非另有說明。)Charaeteristie 特性Symbol符號(hào)TL431AITL431ACTL431BIU單最小值典型值最大值最小值典型值最大值最小值典型值最大值Refere nee In putTA = 25CVVoltage (Figure 1)參TA = Tlow to ThighVref考輸入電壓 VKA =Vref, IK = 10 mARefere nee I

11、n put Voltage Deviati on OverTemperature Range (Figure 1, Notes 1,2) 參考 輸入電壓偏差溫度范圍 VKA= Vref, IK = 10 mADVref301717mVRatio of Change in Refere nee In put Voltage to Change in Cathode to Anode Voltage IK = 10 mA (Figure 2), VKA = 10 V to Vref Vref VKAmV VKA = 36 V to 10 VRefere nee In put Curre nt (F

12、igure 2)參考輸入電流K = 10 mA, R1 = 10 k, R2=ooTA = 25CIrefp ATA = Tlow to Thigh(Note 1)-Refere nee In put Curre nt Deviati on OverTemperature Range (Figure 2, Note 1) IK = 10 mA, R1 = 10k, R2 = 參考輸入電流偏差溫度 范圍DIrefp AMi ni mum Cathode Curre nt For Regulati on最小陰極電流調(diào)節(jié) VKA = Vref (Figure 1)IminmAOff -Jtate C

13、athode Current(Figure 3)斷態(tài)陰極電流 VKA = 36V, Vref =0VIoff26010002601000230500nADynamie Impedanee (Figure 1, Note 3) VKA = Vref, DIK = mA to 100 mA f 3 kHz 動(dòng)態(tài)阻抗|ZKA|-Q圖8測(cè)試電路for loff圖6測(cè)試電路 VKA = Vref 圖7測(cè)試電路 VKA Vref曲線圖:153Figure 4- Catriode Current versus Cathode Voltage-200恤 CATHOOe VOLTAGE (V)Figure 5.

14、 CathodeCuFTent versus Cathode Volume doo31恤 CAWDOE VOJAGE (V)圖13變化的參考輸入電壓與陰極電壓圖14斷態(tài)陰極電流隨環(huán)境溫度圖9陰極電流與陰極電壓圖10陰極電流與陰極電壓Figure S. Reference i!ipnt Vottag& v&(sirs Ambient Temperature7 AME邱廠TH仟字上二咗 M圖11參考輸入電壓與常溫Figure 8. Change rn Reference Input Vollage versus Cflthocfe VQltagenFigure T. ReTeren匚。Input

15、Ctirreiit versus圖12參考輸入電流與常溫10GFigure 9 Off-State Cathode Curr&nt versus Ambient Temperature-2502550?5Tfc AhClBIT TEMP= RATUFE (5C)Figure la. Dynamic Impedanceversus FrequencyTa-2F cAL,= 1.G nA TO DC nAM=z=irG I| (1 j 胡圖15動(dòng)態(tài)阻抗與頻率Figure M. Open-Loap voltage Gamversus FrequencySi：76Figure 11 uyimnic I

16、mpetlance versus Ambient Tenperatuie畑=ZA I j ft As LOOrrAf1.0kHz七 CuCutT： MIE圧kT-三hQERTL!衣:-C.圖16動(dòng)態(tài)阻抗隨環(huán)境溫度tOk曲一1上Mf, FHEtwaiGY ma対卻口 Q圖17開環(huán)電壓增益與頻率Figure 14. Pulse ResponseTJeoicEq *-_亙耗 Vr-HO產(chǎn)cICOFigure 13. Spectral Noise Density圖18譜噪聲密度Fngirre 15. stability Boundary Conditions14GTA= Cfi-1inputkcnrt

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