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| (R) TS431 LOW VOLTAGE ADJUSTABLE SHUNT REFERENCE .LOW .2% .WI .LOW .HI .ESD .OPTI VOLTAGE OPERATION : 1.24 TO 6V and 1% VOLTAGE PRECISION DE RANGE CATHODE CURRENT : 25A TO 30mA OUTPUT IMPEDANCE : 0.25 GH STABILITY WHILE OPERATING WITH CAPACITIVE LOAD PROTECTION : 5kV (Human Body Model) 200V (Machine Model) MIZED FOR HIGH TEMPERATURES Z TO92 (Plastic Package) L SOT23-5 DESCRIPTION The TS431 is a three terminals programmable shunt Voltage Reference optimized for high temperatures. However, it can operate from -40oC up to +125oC. The output voltage is set by two external resistors to any value between 1.24 and 6V. When driving an optocoupler, the TS431 is particularly interesting to regulate 3.3V switching power supplies. PIN CONNECTIONS (top view) TO92 (Top view) SOT23-5L (Top view) ORDER CODES Part Number TS431I TS431AI Temperature Range -40oC, +125oC -40 C, +125 C o o Package Z * * L u * SOT23 Marking L272 L271 NC 1 5 Anode 1 Cathode 2 Anode Reference NC* 2 3 Cathode 3 4 Reference * Do not connect this pin or connect it to ground June 1999 1/8 TS431 ABSOLUTE MAXIMUM RATINGS Symbol VKA IK Iref Pd Toper Tstg Parameter Cathode to Anode Voltage Continuous Cathode Current Range Reference Input Current Range Power dissipation, TO92 package @ Tamb. = 25oC Power dissipation, SO23-5 package @ Tamb. = 25oC Operating Free-air Temperature Range Storage Temperature Range Value 10 -20 to +40 -0.05 to +3 625 500 -40 to +125 -65 to +150 Unit V mA mA mW o o C C OPERATING CONDITIONS Symbol VKA IK Cathode Current Parameter Cathode to Anode Voltage Value Vref to 6 0.025 to 30 Unit V mA TS431 ELECTRICAL CHARACTERISTICS Tamb = 25oC (unless otherwise specified) Symbol Vref Vref Parameter Output Voltage VKA = Vref @ Ik = 100A Output Voltage Change - note 1 IK = 100A, VKA = Vref Test Conditions Tamb = 25oC 0< 0< 0< -20 -40 -40 Tamb < +70oC o Tamb < +105 C Tamb < +125oC < Tamb < +105oC o < Tamb < +85 C < Tamb < +125oC Min. 1.215 Typ. 1.240 Max. 1.265 15 20 25 30 35 40 2.7 Unit V mV | Vref | VKA Iref Iref Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage Reference Input Current Reference Input Current Deviation Over Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance IK = 10mA VKA = 6V to Vref IK = 10mA IK = 10mA R1 = 10k R2 = VKA = Vref VKA = 6V, Vref = 0 VKA = Vref, f < 1kHz IK = 0.1 to 15mA 30 30 mV/V 100 60 nA nA A A Imin Ioff |ZKA| 25 0.001 0.25 40 0.1 0.4 Notes : 1. Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. Vref = Vref max. - Vref min V ref max. V ref min. T1 T2 Temperature TS431 TS431A ELECTRICAL CHARACTERISTICS Tamb = 25oC (unless otherwise specified) Symbol Vref Vref Parameter Output Voltage VKA = Vref @ Ik = 100A Output Voltage Change - note 1 IK = 100A, VKA = Vref Test Conditions Tamb = 25 C 0< 0< 0< -20 -40 -40 Tamb < +70oC Tamb < +105oC Tamb < +125oC o < Tamb < +105 C < Tamb < +85oC < Tamb < +125oC o Min. 1.228 Typ. 1.240 Max. 1.252 15 20 25 30 35 40 2.7 Unit V mV | Vref | VKA Iref Iref Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage Reference Input Current Reference Input Current Deviation Over Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance IK = 10mA VKA = 6V to Vref IK = 10mA IK = 10mA R1 = 10k R2 = VKA = Vref VKA = 6V, Vref = 0 VKA = Vref, f < 1kHz IK = 0.1 to 15mA 30 30 mV/V 100 60 nA nA A A Imin Ioff |ZKA| 25 0.001 0.25 40 0.1 0.4 Notes : 1. Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. Vref = Vref max. - Vref min. V ref max. V ref min. T1 T2 Temperature 3/8 TS431 Test circuit for Vka=Vref Reference voltage vs Temperature 1,29 Average 1,28 1,27 Reference voltage (V) 1,26 1% range 1,25 1,24 1,23 1,22 1,21 1,2 1,19 -40 -30 -20 -10 2% range Input Ik Output Vka=Vref Ik=100A Vka Vref 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (C) Cathode current vs Cathode voltage 15 10 Ika Cathode current (mA) 5 0 -5 Vka=Vref Ta=25C -10 -15 -1 -0,5 0 0,5 1 1,5 Vka Cathode voltage (V) Reference input current vs temperature 32,5 Rka (Ohms) 0,34 32 Iref Reference input current (nA) 0,32 0,3 0,28 0,26 30,5 Rka - Static impedance vs Temperature 31,5 Vka=Vref Ika =100A to 15mA 31 30 Ika = 10mA R1=10K R2=inf 0,24 0,22 0,2 0,18 29,5 29 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (C) -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (C) 4/8 TS431 Off State cathode current vs temperature 50 Test circuit for Off-state current measurement Input Vka=6V Ioff Ioff Off State cathode current (nA) 40 30 Vka= 6Volts Vref=0Volts 20 10 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (C) Ratio of change in Reference input voltage to change in cathode voltage vs temperature 3 Test circuit for Vka > Vref Input Ik R1 Iref Vka = Vref . (1+R1/R2) + Iref . R1 2 Vka dVref/dVka (mV/V) 1 0 -1 -2 R2 Vref -3 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (C) Phase & Gain vs Frequency Gain (dB) 70 Phase () 180 Test circuit for Phase & Gain measurements 60 50 Gain 40 30 Phase 160 10F 140 Output Ik=100A 6.8K 10F 120 100 20 10 80 Input 60 0 10 30 100 300 1,000 3,000 Frequency (Hz) 10,000 30,000 40 100,000 4.3K Vref 5/8 TS431 Pulse response for Ik=100A 3,5 Input 3 Input & Output voltage (V) 2,5 2 1,5 1 0,5 0 -0,5 0 1 2 3 4 Time (s) 5 6 Test circuit for pulse response at Ik=100A Vka=Vref Ik=100A Ta=25C 18K Ik=100A Output 7 8 Pulse response for Ik=1mA 3,5 Input 3 2,5 2 1,5 1 0,5 0 -0,5 0 1 2 3 4 Time (s) 5 6 Vka=Vref Ik=1mA Ta=25C Test circuit for pulse response at Ik=1mA 1.8K Input & Output voltage (V) Ik=1mA Output 7 8 Equivalent Input noise vs frequency 900 800 Noise (nV/SQRT(Hz)) 700 600 Vka=Vref Ik=100A Ta=25C 500 400 0,1 0,2 0,3 0,4 0,5 1 2 3 4 5 10 20 30 40 50 100 Frequency (KHz) 6/8 Output Intput Pulse Generator 50 Output Intput Pulse Generator 50 TS431 PACKAGE MECHANICAL DATA SOT23-5L A E A2 D b A1 E1 C L Dimensions Min. A A1 A2 b C D E E1 L 0.90 0.35 0.09 2.80 2.60 1.50 0.10 0.90 Millimeters Max. 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.75 0.60 0.035 0.013 0.003 0.110 0.102 0.059 0.003 Min. 0.035 Inches Max. 0.057 0.005 0.051 0.019 0.007 0.118 0.118 0.068 0.023 7/8 TS431 PACKAGE MECHANICAL DATA 3 PINS - PLASTIC PACKAGE TO92 Dimensions L B O1 C K O2 a Min. 3.2 4.45 4.58 12.7 0.407 0.35 Millimeters Typ. 1.27 3.7 5.00 5.03 0.5 Max. 4.2 5.2 5.33 0.508 Min. 0.126 0.1752 0.1803 0.5 0.016 0.0138 Inches Typ. 0.05 0.1457 0.1969 0.198 0.0197 Max. 0.1654 0.2047 0.2098 0.02 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a trademark of STMicroelectronics (c) 1999 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. (c) http://www.st.com 8/8 |
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