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TEXAS INSTRUMENTS TL1431 handbook

1. OFF STATE CATHODE CURRENT DELTA CATHODE VOLTAGE vs vs FREE AIR TEMPERATURE FREE AIR TEMPERATURE 0 4 0 85 VKA 3 V to 36 V lt o35 l 0 95 S 03 gt gt 105 0 25 E 4 8 0 2 2 1 15 2 04 5 1 35 0 05 0 1 45 50 25 0 25 50 75 100 125 50 235 0 25 50 75 100 125 Free Air Temperature C Ta Free Air Temperature C Figure 8 Figure 9 EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY 260 Vp Equivalent Input Noise Voltage nV Hz 10 100 1k 10k 100 k f Frequency Hz Figure 10 T Data at high and low temperatures are applicable only within the recommended operating free air temperature ranges of the various devices EXAS INSTRUMENTS 10 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 500 uF 7 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 TYPICAL CHARACTERISTICS EQUIVALENT INPUT NOISE VOLTAGE OVER A 10 SECOND PERIOD f 0 1 to 10 Hz IKA 10 mA TA 25 Vpn Equivalent Input Noise Voltage u V t s 19 1 V 1kQ 9102 2000 uF Woe TL1431 DUT TLE2027 ve Ay 10 V mV e 160 160 160 e 0 1 uF T VEE VEE TEST CIRCUIT FOR 0 1 Hz TO 10 Hz EQU
2. o Rs Figure 27 Precision Current Limiter Figure 28 Precision Constant Current Sink 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries TI reserve the rightto make changes to their products or to discontinue any product or service without notice and advise customers to obtain the latest version of relevant information to verify before placing orders that information being relied on is current and complete All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement including those pertaining to warranty patent infringement and limitation of liability TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS INCLUSION OF TI PRODUCTS IN
3. Input and Output Voltages V 100 0 1 2 STABILITY BOUNDARY CONDITIONSt A VKA Vi ref 90 5 C VKA 10 80 D VkA 15 70 a 3 4 t Time us VI 220 Q Output Pulse Generator 50 Q f 100 kHz e T e GND TEST CIRCUIT FOR PULSE RESPONSE 5 6 7 Figure 14 150 0 Stable T 60 50 Stable TEST CIRCUIT FOR CURVE A 40 30 Ika Cathode Current mA 20 10 0 0 001 0 01 Load Capacitance uF 0 1 1 10 R2 xt VBATT device to oscillate For curves B C and D R2 and V are adjusted to establish the initial VA and IKA conditions with CL 20 and CL t The areas under the curves represent conditions that may cause the e t are then adjusted to determine the ranges of stability TEST CIRCUIT FOR CURVES B C AND D Figure 15 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 13 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 APPLICATION INFORMATION Table of Application Circuits Co APHOAION O FIGURE R V BATT e e Vo V BATT R1 0 1 Viren 6 4 TL1421 P i on Voff V BATT
4. 2 AV ca to the change in cathode voltage Reference input current R1 10 kQ R2 Figure 2 Minimum cathode current for regulation VKA Vi ref to 36 V Off state cathode current 36 V 0 VKA f S 1 kHz 2 Output impedancet ick S dA i QO mA Figure 1 t The output impedance is defined as z When the device is operating with two external resistors see Figure 2 the total dynamic impedance of the circuit is given by K which is approximately equal to 1 82 PARAMETER MEASUREMENT INFORMATION V dev v en 106 ppm _ s ES Max Vi ref 90 f where Vi dev ATA is the rated operating temperature range of the device Min Vi ref lt lt ATA Input e VKA Input AAA mo o IKA IKA mi x E S A Vi ref R22 Vi ref Ri 4 Y Vka 1 R1 X R1 Figure 1 Test Circuit for Va Vref Figure 2 Test Circuit for Va gt Vref 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 7 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 PARAMETER MEASUREMENT INFORMATION Input VKA Figure 3 Test Circuit for loff TYPICAL CHARACTERISTICS Table of Graphs SET OtsmecaodecamenwsFreearempeue Ratio of deta reference voltage 1o del
5. DECEMBER 1991 REVISED JANUARY 2000 APPLICATION INFORMATION V BATT Vo 5V Rb V BATT Vo 5 V 1 5 0 5 s o oan TL1431 Adjust TL1431 0 1 i o 27 4 KQ 9 243 01 aM 0 1 NOTE A Rp should provide cathode current 21 mA to the TL1431 Figure 22 Precision 5 V 1 5 A 0 5 Regulator Figure 23 5 V Precision Regulator 6 8 5 V 0 5926 10 kQ e TL1431 10 ko Al Feedback Figure 24 PWM Converter With 0 5 Reference 35 TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 APPLICATION INFORMATION R3 V BATT e R1B Y 680 R1A Xa 12V e 2kQ TL1431 TL1431 lt R2A TL1431 e ot pe imi R1B Low Limit 1 55g V RAE LED on When T NE R1A Low Limit V BATT High Limit T High Limit 1 RIA Viren L NOTE A Select R3 and R4 to provide the desired LED intensity and Delay R x C x lao va cathode current 21 mA to the TL1431 Vi ref Figure 25 Voltage Monitor Figure 26 Delay Timer RCL 0 1 l o V V BATT BATT lo R1 TL1431 TEM RS v BATT v 1 In
6. NC 4 5 NC NC No internal connection TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 D PACKAGE TOP VIEW CATHODE 1 8 REF ANODE 2 7 ANODE ANODE 6 ANODE NC 4 5 NC NC No internal connection ANODE terminals are connected internally LP PACKAGE TOP VIEW CATHODE ANODE REF KTP PACKAGE TOP VIEW CATHODE ANODE ANODE REF The ANODE terminalis in electrical contact with the mounting base FK PACKAGE TOP VIEW a okouo Zoze Zz L IL IL JL IL 2 1 NC 18 NC NC 17L NC NC 16 NC NC 15 ANODE Please be aware that an important notice concerning availability standard warranty and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet 35 TEXAS INSTRUMENTS Copyright 2000 Texas Instruments Incorporated On products compliant to MIL PRF 38535 all parameters are tested unless otherwise noted On all other products production processing does not necessarily include testing of all parameters POST OFFICE BOX 655303 DALLAS TEXAS 75265 1 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 AVAILABLE OPTIONS PACKAGED DEVICES PLASTIC CHIP TA Wein FLANGE TO 226AA CHIP CERAMIC FORM OUTLINE CARRIER DIP D MOUNTED LP FK JG Y KT
7. R2 0 1 Input A 4 TL1431 e e Vit 2 5 V _ R1 Vo 1 NOTE R should provide cathode current 21 mA to the 1431 at minimum V BATT e GND Figure 17 Single Supply Comparator Figure 16 Shunt Regulator With Temperature Compensated Threshold 35 TEXAS INSTRUMENTS 14 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 APPLICATION INFORMATION V BATT 9 R 2N2222 TL1431 0 1 _ 44 1 Vo NOTE A R should provide cathode current 21 mA to the TL1431 at minimum V BATT Figure 18 Precision High Current Series Regulator R V BATT Vo oA R2 TL1431 e e e 4 1 Vo 1 s RI Viren Figure 20 Higher Current Shunt Regulator IN 7805 POUT Vo Common A TL1431 R2 R1 Viren Min V Vi ref 5 V Figure 19 Output Control of a Three Terminal Fixed Regulator Ovv e E R1 TL1431 gt S R2 e Vtrip 1 B3 Viren NOTE A Refer to the stability boundary conditions in Figure 15 to determine allowable values for C V BATT Figure 21 Crowbar 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F
8. uA to 10 mA Package thermal impedance see Notes 2 and 3 D package 97 C W KIP package 28 C W LP package udo cans bet 156 C W Lead temperature 1 6 mm 1 16 inch from case for 10 seconds 260 C Storage temperature range Tstg 66sec eee eee nnn 65 to 150 C t Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is notimplied Exposure to absolute maximum rated conditions for extended periods may affect device reliability NOTES 1 All voltage values are with respect to ANODE unless otherwise noted 2 Maximumpower dissipation is a function of T JA and TA The maximum allowable power dissipation at any allowable ambient temperature is Pp Ty max Operating at the absolute maximum Ty of 150 C can impact reliability 3 The package thermal impedance is calculated in accordance with JESD 51 POWER DISSIPATION RATING TABLE FREE AIR TEMPERATURE DERATING 25 125 PACKAGE POWER RATING iir eru POWER RATING POWER RATING POWER RATING 1375 mW 11 0 mW C 880 mW 715 mW 275 mW 1050 mW 8 4 mW C 672 mW 546 mW 210 mW recommended operating conditions 36 1 TL1431
9. C TA Operating free air temperature TL1431Q TL1431M 35 TEXAS INSTRUMENTS 4 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 electrical characteristics at specified free air temperature Ika 10 mA ae otherwise noted PARAMETER TEST CONDITIONS Reference Vi ref input voltage VKA Vi ref Full range Deviation of reference input Vi dev voltage over full temperature VKA Vi ref ranget Ratio of change in reference input voltage to the change in AVKA V to 36 V cathode voltage Reference input current Deviation of reference input rae over full temperature R1 10 ko ranget 25 Off state loff cathode current 36 V EI Figure 3 range VKA Vi ret lt 1 kHz lzKA Output impedance lca 1 19 DO TA 25 C Figure 1 o2 04 t Full range is 0 to 70 for C suffix devices t The deviation parameters Vi dev and are defined as the differences between the maximum and minimum values obtained over the rated temperature range The average full range temperature coefficient of the reference input voltage avi i is defined as re 106 V rer at 25 Max Vi ref Ve where Vi dev ATA is the rated operating temperature range of the device Min Vi ref I atx av 0 is positive or negative dependi
10. IVALENT INPUT NOISE VOLTAGE Figure 11 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 11 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 TYPICAL CHARACTERISTICS SMALL SIGNAL VOLTAGE AMPLIFICATION vs FREQUENCY 60 a IKA 10 mA yi TA 25 C c 2 15 KQ Y 8 2300 2 40 9 uF e lt 1 9 30 z 2 CJ 8 25 x T g 20 GND x E j 10 TEST CIRCUIT FOR VOLTAGE AMPLIFICATION ri 0 1k 10k 100 k 1M 10M f Frequency Hz Figure 12 REFERENCE IMPEDANCE vs FREQUENCY 100 IKA 1 mA 100 mA iko TA 25 C e e Output 10 CJ 500 IzkAl Reference Impedance Q e GND TEST CIRCUIT FOR REFERENCE IMPEDANCE 0 1 1k 10k 100 k 1M 10M f Frequency Hz Figure 13 35 TEXAS INSTRUMENTS 12 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 25 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 TYPICAL CHARACTERISTICS PULSE RESPONSE Input
11. P 0 C to 70 TL1431CD TLI431CKTPR TLI431CLP 40 C to 125 C TLi431QD TL1431QLP seceusc Mem The D andLP packages are available taped and reeled The KTP packageis only available taped and reeled Add the suffix R to the device type e g TL1431CDR Chip forms are tested at 25 C logic symbol REF ANODE CATHODE functional block diagram CATHODE REF 35 TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 equivalent schematict 1 CATHODE e 8000 2 800 02 REF 20 eo 150 0 A 3 28 4 kQ o 10 24ko2 72 20 pE Ts 1kQ 8000 2 3 6 7 ANODE e oe component values are nominal Pin numbers shown are for the D package 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 absolute maximum ratings over operating free air temperature range unless otherwise noted t Cathode voltage Vka see Note 1 37 V Continuous cathode current range IKA issssssssss II 100 to 150 mA Reference input current range iilii 50
12. PRODUCTION DATA information is current as of publication date Products conform to specifications per the terms of Texas Instruments standard warranty Production processing does not necessarily include testing of all parameters 0 4 Initial Voltage Tolerance 0 2 Q Typical Output Impedance Fast 500 ns Sink Current Capability 1 to 100 mA Low Reference Current REF Adjustable Output Voltage Viref to 36 V description The TL1431 is a precision programmable reference with specified thermal stability over automotive commercial and military temperature ranges The output voltage can be set to any value between Vi ref approximately 2 5 V and 36 V with two external resistors see Figure 16 This device has a typical output impedance of 0 2 Active output circuitry provides a very sharp turnon characteristic making the device an excellent replacement for zener diodes and other types of references in applications such as onboard regulation adjustable power supplies and switching power supplies The TL1431C is characterized for operation over the commercial temperature range of O C to 70 The TL1431Q is characterized for operation over the full automotive temperature range of 40 C to 125 C The TL1431M is characterized for operation over the full military temperature range of 55 C to 125 C JG PACKAGE TOP VIEW CATHODE 1 8 REF NC 2 7 NC NC 3 6 ANODE
13. SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER S RISK In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards Tl assumes no liability for applications assistance or customer product design TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relating to any combination machine or process in which such semiconductor products or services might be or are used Tl s publication of information regarding any third party s products or services does not constitute Tl s approval warranty or endorsement thereof Copyright 2000 Texas Instruments Incorporated
14. a cathode volage vs temperature o 35 TEXAS INSTRUMENTS 8 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 TYPICAL CHARACTERISTICST REFERENCE VOLTAGE VS FREE AIR TEMPERATURE 2 52 2 51 2 5 Reference Voltage V 2 49 2 48 50 25 0 25 50 75 100 125 TA Free Air Temperature C Figure 4 CATHODE CURRENT vs CATHODE VOLTAGE 150 100 50 50 Ika Cathode Current mA 100 3 2 1 0 1 2 3 VKA Cathode Voltage V Figure 6 REFERENCE CURRENT VS FREE AIR TEMPERATURE l ret Reference Current u A 50 25 0 25 50 75 100 125 TA Free Air Temperature Figure 5 CATHODE CURRENT vs CATHODE VOLTAGE 800 600 400 200 Ika Cathode Current u 200 2 1 0 1 2 3 4 Cathode Voltage V Figure 7 t Data at high and low temperatures are applicable only within the recommended operating free air temperature ranges of the various devices 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 9 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 TYPICAL CHARACTERISTICST RATIO OF DELTA REFERENCE VOLTAGE TO
15. ng on whether minimum V ref or maximum V ref respectively occurs at the lower temperature re s AV cn The output impedance is defined as Z Om KA When the device is operating with two external resistors see Figure 2 the total dynamic impedance of the circuit is given by z which is approximately equal to z 4 RI 5 TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 5 1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 electrical characteristics at specified free air biam Ika 10 mA unless otherwise noted Test TL1431M PARAMETER TEST CONDITIONS EIE eu 2500 2510 2475 2500 2540 Reference V V EX Fiaure 1 input voltage KA I ref g 2470 2530 2460 2550 Deviation of reference input Full voltage over full VKA range temperature ranget Ratio of change in reference input Full voltage to the V to 36 V Figure 2 range change in cathode voltage e eference input current R1 10kQ R2 Figure 2 range Deviation of reference input R1 10kQ R2 e Full Figure 2 current over full range temperature ranget Minimum cathode current Vi ref to 36 V 25 Figure 1 for regulation 2 Off state cathode current Vi ret f lt 1 kHz lzKA Output impedance 1 mA to 100 mA On products compliant to MIL PRF 38535
16. this parameter is not production tested t Full range is 40 C to 125 C for Q suffix devices and 55 C to 125 C for M suffix devices t The deviation parameters Vi dev are defined as the differences between the maximum and minimum values obtained over the rated temperature range The average full range temperature coefficient of the reference input voltage avi is defined as V l dev v uen x 106 ppm d Vi ref lev I ref S ATA where ATA is the rated operating temperature range of the device Min Vi ref d 36 Vi ref av is positive or negative depending on whether minimum Vi ref or maximum Vi ref respectively occurs at the lower temperature AV A The output impedance is defined as z 4 When the device is operating with two external resistors see Figure 2 the total dynamic impedance of the circuit is given by z n which is approximately equal t Ri 35 TEXAS INSTRUMENTS 6 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F DECEMBER 1991 REVISED JANUARY 2000 electrical characteristics at Ika 10 mA TA 25 PARAMETER TEST CONDITIONS TEST CIRCUIT MAX Vitref Reference input voltage AV Ratio of change in reference input voltage 3 V to 36 V Figure 2

TEXAS INSTRUMENTS TL1431 handbook

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