TL431I

TL431I FEATURES Adjustable Precision Shunt Regulator (I Grade) PIN CONNECTIONS • Programmable Output Voltage to 40V • Low Dynamic Output Impedance 0.2Ω • Sink Current Capability of 0.1 mA to 100 mA • Equivalent Full-Range Temperature Coefficient of 50 ppm/oC • Temperature Compensated for Operation over Full Rated Operating Temperature Range R • Low Output Noise Voltage A K • Fast Turn on Respons • Provided Pb-Free packages from the end of 2004 K A R TO-92 SOT-89 TL431ICPK R A K TL431ICLP * ESD tolerance (human body model) 2000V * Operating Temperature Range -60~+125 •C SO8 TL431ACMX A SOT-23 TL431ILT1 CATHODE ANODE ANODE NC 1 2 3 4 8 7 6 5 REF ANODE ANODE NC R K DESCRIPTION The TL431I is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5 volts) and 40 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. The TL431I is characterized for operation from -60oC to +125 oC. SYMBOL FUNCTIONAL BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Characteristic Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation at 25oC: TO – 92 Package (R!JA = 178oC/W) SOT – 23 – 3 Package (R!JA = 625oC/W) Junction Temperature Range Operating Temperature Range Storage Temperature Range Symbol VKA IK IREF PD 0.7 0.2 0 ~ 150 -60 ~+125 -65 ~ +150 W W o C o o Value 42 100 ~ 150 0.05 ~ 10 Unit V mA mA TJ Tg Tstg C C 1 TL431I Characteristic Cathode Voltage Cathode Current Adjustable Precision Shunt Regulator (I Grade) Symbol VKA IK Test Condition Min REF RECOMMENDED OPERATING CONDITIONS Typ Max 40 100 Unit V mA 0.5 ELECTRICAL CHARACTERISTICS (Ta = 25oC, VKA = VREF, IK = 10mA unless otherwise specified) Characteristic Reference Input Voltage Deviation of Reference Input Voltage Over Full Temperature Range Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance Symbol VREF VREF(dev) Tmin ≤ Ta ≤ Tmax Vka=Vref, Ik=10mA Test Condition Min 2.445 Typ 2.495 3 Max 2.545 17 Unit V mV ∆V R EF ∆V K A IREF IREF(dev) ∆VKA = 10V-VREF ∆VKA = 36V- 10V R1 = 10KΩ, R2 = ∞ R1 = 10KΩ, R2 = ∞ -1.4 -1.0 1.5 0.4 -2.7 -2.0 4 1.2 mV/V µA µA IK(min) IK(off) ZKA VKA = 42V, VREF = 0 IK = 10mA to 100 mA , f ≤ 1.0KHz 0.50 0.05 0.15 1 1.0 0.5 mA µA Ω Ordering Information Grade AA A B Accuracy 0.5% of Typ. 1 % of Typ. 2 % of Typ. Marking TL431AA TL431A TL431 Min. 2.488V 2.475V 2.445V Typ. 2.495V 2.495V 2.495V Max. 2.513V 2.525V 2.545V Notice: Please don't confuse the version of product (-A,-I,-B Suffix) with Grade of product (AA,A,B). TEST CIRCUITS Fig.1. Test Circuit for VKA = VREF Fig.2. Test Circuit for VKA ≥ VREF Fig.3. Test Circuit for Ioff IN P U T VKA IN P U T VKA IN P U T VKA IK IK R1 IR E F B T 432 R2 V R EF IK (O F F ) B T 432 V R EF B T 432 V K A = V R E F (1+ R 1/R 2)+ IR E F R 1 2 TL431I Adjustable Precision Shunt Regulator (I Grade) BONDING DIAGRAM 2 1 3 Cathod Anode Ref C h i p si ze: 0, 62x 0, 82 Pad si ze : 80 x 80 Unit : µm PAD LOCATION Pad No. 2 3 1 Pad Name A K R Description Anode Cathode Reference X Y 472 68 94 672 672 244.5 PHYSICAL CHARACTERISTIC W afes dia W afes width Scribe width Passivation Backside metallization 100 mm (4") 280 ±20µm 80 µm PSG W ithout metallization Fig. 1 Maximum Power Dissipation 3 TL431I Adjustable Precision Shunt Regulator (I Grade) Fig. 2 Small Signal Voltage Amplification vs. Frequency Fig. 3 Pulse Response 4 TL431I Adjustable Precision Shunt Regulator (I Grade) Symbol A A1 b c D D1 E e e1 L Φ h Dimensions In Millimeters Min Max 3.300 3.700 1.100 1.400 0.380 0.550 0.360 0.510 4.400 4.700 3.430 4.300 4.700 1.270 TYP 2.440 2.640 14.100 14.500 1.600 0.000 0.380 Dimensions In Inches Min Max 0.130 0.146 0.043 0.055 0.015 0.022 0.014 0.020 0.173 0.185 0.135 0.169 0.185 0.050 TYP 0.096 0.104 0.555 0.571 0.063 0.000 0.015 5 TL431I Adjustable Precision Shunt Regulator (I Grade) Symbol A b b1 c D D1 E E1 e e1 L Dimensions In Millimeters Min Max 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 0.197 0.016 0.023 0.014 0.017 0.173 0.181 0.061 REF 0.091 0.102 0.155 0.167 0.060TYP 0.118TYP 0.035 0.047 6 TL431I Adjustable Precision Shunt Regulator (I Grade) Symbol A A1 A2 b c D E E1 e e1 L θ Dimensions In Millimeters M in Max 1.050 1.250 0.000 0.100 1.050 1.150 0.300 0.500 0.100 0.200 2.820 3.020 1.500 1.700 2.650 2.950 0.950(BSC) 1.800 2.000 0.300 0.600 0° 8° Dimensions In Inches Min Max 0.041 0.049 0.000 0.004 0.041 0.045 0.012 0.020 0.004 0.008 0.111 0.119 0.059 0.067 0.104 0.116 0.037(BSC) 0.071 0.079 0.012 0.024 0° 8° 7 TL431I Adjustable Precision Shunt Regulator (I Grade) Symbol A A1 A2 b c D E E1 e L θ Dimensions In Millimeters M in Max 1.350 1.750 0.100 0.250 1.350 1.550 0.330 0.510 0.170 0.250 4.700 5.100 3.800 4.000 5.800 6.200 1.270(BSC) 0.400 1.270 0° 8° Dimensions In Inches Min Max 0.053 0.069 0.004 0.010 0.053 0.061 0.013 0.020 0.006 0.010 0.185 0.200 0.150 0.157 0.228 0.244 0.050(BSC) 0.016 0.050 0° 8° 8