TS431 TSC | Alldatasheet
Document overview
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Technical content
Features
Precision Reference Voltage TS431 2.495V±2% TS431A 2.495V±1% TS431B 2.495V±0.5% Equivalent Full Range Temp. Coefficient: 50ppm/ oC Programmable Output Voltage up to 36V Fast Turn-On Response Sink Current Capability of 1.0 to 100 mA Low Dynamic Output Impedance: 0.22 Ω Low Output Noise Block Diagram
Ordering Information
Note: Where x denotes voltage tolerance. B l a n k : ± 2 % A: ±1% B : ± 0 . 5 % Part No. Operating Temp. (Ambient) Package TS431xCT TO-92 TS431xCY SOT-89 TS431xCX SOT-23 TS431xCS -20 ~ +85 oC SOP-8 Pin Assignment Pin No. TS431/A/BCT TS431/A/BCY TS431/A/BCX TS431/A/BCS Pin
Description
2 2 3 2,3,6,7 Anode 3 3 2 1 Cathode 4,5 Non connect
TS431/A/B 2-8 2003/12 rev. B Absolute Maximum Rating Cathode Voltage (Note 1) Vka 37 V Continuous Cathode Current Range Ik -100 ~ +150 mA Reference Input Current Range Iref -0.05 ~ +10 mA P o w e r D i s s i p a t i o n ( N o t e 2 , 3 ) T O - 9 2 S O T - 8 9 / S O P - 8 S O T - 2 3 Pd 0.625 0.5 0.3 W Operating Junction Temperature Range Tj +125 oC Storage Temperature Range T STG -65 ~ +150 oC Note 1: Voltage values are with respect to the anode terminal unless otherwise noted. Note 2: Tj Max = 150 oC Note 3: Rating apply to ambient temperature at 25 oC Recommend Operating Condition Cathode Voltage Range Vka Ref ~ 36 V Cathode Current Range (for regulation) Ik 1 ~ 100 mA
Electrical Characteristics
(Ta=25 oC, unless otherwise specified.) Parameter Symbo Test Conditions Min Typ Max Unit TS431 TS431A Reference voltage TS431B Vref Vka =Vref, Ik=10mA (Figure 1) 2.450 2.475 2.487 2.495 2.550 2.525 2.513 V Deviation of reference input voltage, over temp. (Note 4) ∆Vref Ta = full range Vka =Vref, Ik=10mA (Figure 1) -- 3 17 mV Reference Input current Iref R1=10KΩ, R2= ∞, Ika=10mA (Figure 2) -- 0.7 4.0 uA Radio of change in Vref to change in cathode Voltage ∆Vref / ∆Vka Ika=10mA, Vka = 10V to Vref, Vka = 36V to 10V (Figure 2) -1.4 - 1.0 -2.7 - 2.0 mV/V Deviation of reference input current, over temp. Iref(DEV) Ta= full range R1=10KΩ, R2= ∞, Ika=10mA (Figure 2) -- 0.4 1.2 uA Minimum operating cathode current Ika(min) Vka=Vref (Figure 1) -- 0.4 0.6 mA Off-state Cathode Current Ioff Vref=0V (Figure 3) Vka=36V -- -- 1.0 uA Dynamic Output Impedance |Zka| f<1KHz, Vka=Vref Ika=1mA to 100mA (Figure 1) -- 0.22 0.5 Ω
TS431/A/B 3-8 2003/12 rev. B Electrical Characteristics (continued) (Ta=25 oC, unless otherwise specified.) Note 4. Deviation of reference input voltage, VDEV, is defined as the maximum deviation of the reference over the full temperature range. The average temperature coefficient of the reference input voltage αVref is defined as: | αVref | = [ VDEV / Vref(25 oC) ] * 106 / T2 – T1…………………….. (PPM/ oC) Where: T2-T1 = full temperature change. αVref can be positive or negative depending on whether the slope is positive or negative. Example: Maximum Vref=2.496V at 30 oC, minimum Vref=2.492V at 0oC, Vref=2.495V at 25oC, ∆T=70 oC | αVref | = [ 4mV / 2495mV ] * 106 / 70oC ≈ 23ppm/oC Note 5. The dynamic output impedance, Rz, is defined as: | Zka | = ∆Vka / ∆Ika When the device is programmed with two external resistors R1and R2 (see Figure 2). The dynamic output impedance of the overall circuit, is defined as : Test Circuits
TS431/A/B 4-8 2003/12 rev. B Application Examples
TS431/A/B 5-8 2003/12 rev. B Application Examples
TS431/A/B 6-8 2003/12 rev. B Typical Performance Characteristics
TS431/A/B 7-8 2003/12 rev. B TO-92 Mechanical Drawing C D A B H E F G TO-92 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 4.30 4.70 0.169 0.185 B 4.30 4.70 0.169 0.185 C 14.30(typ) 0.563(typ) D 0.43 0.49 0.017 0.019 E 2.19 2.81 0.086 0.111 F 3.30 3.70 0.130 0.146 G 2.42 2.66 0.095 0.105 H 0.37 0.43 0.015 0.017 SOT-89 Mechanical Drawing SOT-89 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 4.40 4.60 0.173 0.181 B 1.50 1.7 0.059 0.070 C 2.30 2.60 0.090 0.102 D 0.40 0.52 0.016 0.020 E 1.50 1.50 0.059 0.059 F 3.00 3.00 0.118 0.118 G 0.89 1.20 0.035 0.047 H 4.05 4.25 0.159 0.167 I 1.4 1.6 0.055 0.068 J 0.35 0.44 0.014 0.017 H F E B A G C D J I
TS431/A/B 8-8 2003/12 rev. B SOT-23 Mechanical Drawing D C A E B G F SOT-23 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 2.88 2.91 0.113 0.115 B 0.39 0.42 0.015 0.017 C 1.78 2.03 0.070 0.080 D 0.51 0.61 0.020 0.024 E 1.59 1.66 0.063 0.065 F 1.04 1.08 0.041 0.043 G 0.07 0.09 0.003 0.004 SOP-8 Mechanical Drawing C PB D K G 1 8 A 16 9 R M F SOP-8 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 4.80 5.00 0.189 0.196 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 (typ) 0.05 (typ) K 0.10 0.25 0.004 0.009 M 0 o 7 o 0 o 7 o P 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019