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automotive power data sheet rev. 1.0, 2010-10-06 tlf2931 low dropout linear voltage regulator TLF2931GV50 tlf2931gv33
pg-dso-8 type package marking TLF2931GV50 pg-dso-8 tlf2931 tlf2931gv33 pg-dso-8 f931v33 data sheet 2 rev. 1.0, 2010-10-06 low dropout linear voltage regulator tlf2931 1overview features ? very low quiescent current ? output current in excess of 100ma ? input-output differential less than 0.6v for 5v-version ? reverse battery protection ? output current limitation ? overtemperature shutdown ? mirror-image insertion protection ? needs only small output capacitor c out =10f ? green product (rohs compliant) ? aec qualified general description the tlf2931 is a positive voltage regulator with a very low quiescent current of 1ma or less when supplying 10 ma loads. the TLF2931GV50 provides an extremely low dr opout voltage of less than 0.2 v for output currents up to 10 ma. therefore the tlf2931 is the ideal supply fo r standby power systems. it certainly can also be used for any system demanding as much as 100 ma of outp ut current. the aec qualif ied device is designed to withstand the harsh environment and operatio n conditions of automotive applications. the tlf2931 is protected from reverse polarity conditio n and can withstand input vo ltages of 28 v continuously. the tlf2931 cannot be harmed by temporary mirror-image insertion. additional prot ection features such as output current limitation and overtemp erature shutdown are also implemented. the tlf2931 comes in an 8-lead smd package (pg-dso-8).
tlf2931 block diagram data sheet 3 rev. 1.0, 2010-10-06 2 block diagram figure 1 block diagram saturation control and protection temperature sensor adjustment bandgap reference 1 2,3,6,7 8 input gnd output aeb01527 circuit amplifier control buffer
data sheet 4 rev. 1.0, 2010-10-06 tlf2931 pin configuration 3 pin configuration 3.1 pin assignment figure 2 pin configuration 3.2 pin definitions and functions TLF2931GV50, tlf 2931gv33 (pg-dso-8) pin symbol function 1out output block to gnd with a capacitor close to the ic terminals, respecting the values given for its capacitance c out and esr in ?typical performance characteristics? on page 9 2,3,6,7 gnd ground 4,5 n.c. not connected 8in input for compensating line influences, a capacito r to gnd close to the ic terminals is recommended in n.c. gnd gnd out n.c. gnd gnd 1 2 3 4 8 5 6 7 pinco nf ig _ dso - 8 .vsd pg-dso-8
tlf2931 general product characteristics data sheet 5 rev. 1.0, 2010-10-06 4 general product characteristics 4.1 absolute maximum ratings note: stresses above the ones listed here may cause perm anent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: integrated protection functions are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not designed for continuous repetitive operation. 4.2 functional range note: within the functional range the ic operates as de scribed in the circuit description. the electrical characteristics are specifi ed within the conditions given in the re lated electrical ch aracteristics table. absolute maximum ratings 1) t j = -40 c to 125 c; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) 1) not subject to production test, specified by design. pos. parameter symbol limit values unit conditions min. max. input 4.1.1 voltage v i -30 42 v ? output 4.1.2 voltage v out -0.3 28 v ? temperatures 4.1.3 junction temperature t j -40 125 c? 4.1.4 storage temperature t stg -55 150 c? esd susceptibility 4.1.5 esd resistivity to gnd v esd -2 2 kv hbm 2) 2) esd susceptibility, hbm acco rding to eia/jesd 22-a114b 4.1.6 esd resistivity to gnd v esd -1 1 kv cdm 3) 3) esd susceptibility, charged device model ?cdm? esda stm5.3.1 pos. parameter symbol limit values unit conditions min. max. 4.2.1 input voltage v i 6 28 v TLF2931GV50 4.2.2 4.4 26 v tlf2931gv33 4.2.3 junction temperature t j -40 125 c?
data sheet 6 rev. 1.0, 2010-10-06 tlf2931 general product characteristics 4.3 thermal resistance pos. parameter symbol limit values unit conditions min. typ. max. TLF2931GV50, tlf2931gv33 (pg-dso-8) 4.3.1 junction to soldering point 1) 1) not subject to production test, specified by design r thjsp ? 39 ? k/w measured to group of pins 2, 3, 6, 7 4.3.2 junction to ambient 1) r thja ? 96 ? k/w footprint only 2) 2) specified r thja value is according to jedec jesd51-2,-7 at natural convection on fr4 2s2p board; the product (chip + package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70m cu, 2 x 35m cu). 4.3.3 ? 67 ? k/w 300mm 2 heatsink area on pcb 2) 4.3.4 ? 66 ? k/w 600mm 2 heatsink area on pcb 2)
tlf2931 electrical characteristics data sheet 7 rev. 1.0, 2010-10-06 5 electrical characteristics 5.1 electrical charact eristics TLF2931GV50 electrical characteristics v i =14v, t j = -40 c to 125 c, i out = 10 ma, all voltages with respect to gr ound, positive current flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 5.1.1 output voltage v out 4.75 5 5.25 v t j =25c 4.5 5 5.5 v ? 5.1.2 line regulation v out,line ?210mv9v< v i <16v 5.1.3 ? 4 30 mv 6 v < v i <26v 5.1.4 load regulation v out,load ?-14-50mv5ma< i out <100ma 5.1.5 output impedance 1) 1) not subject to production test, specified by design z out ?200?m i out =100ma dc and i out =10ma rms 100 hz - 10 khz 5.1.6 current consumption i q ?0.41ma i out =10ma 6v< v i <26v 5.1.7 ? 9 15 ma i out =100ma 5.1.8 output noise voltage 1) v noise ?500?v rms 100 hz - 10 khz c out =100f 5.1.9 long term stability 1) v out,1000h ?20?mv /1000h ? 5.1.10 ripple rejection 1) psrr ?80?db f ripple =120hz 5.1.11 dropout voltage 2) v i - v out 2) obtained when the output voltage has dropped 100mv below the nominal value v dr ?0.050.2v i out =10ma 5.1.12 ? 0.3 0.6 v i out =100ma
data sheet 8 rev. 1.0, 2010-10-06 tlf2931 electrical characteristics 5.2 electrical charact eristics tlf2931gv33 electrical characteristics v i =14v, t j = -40 c to 125 c, i out = 10 ma, all voltages with respect to gr ound, positive current flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 5.2.1 output voltage v out 3.135 3.3 3.465 v t j =25c 2.97 3.3 3.63 v 4.4 v < v i <26v i out =100ma 5.2.2 line regulation v out,line ?433mv4.4v< v i <26v t j =25c 5.2.3 load regulation v out,load ?-10-50mv5ma< i out <100ma t j =25c 5.2.4 output impedance 1) 1) not subject to production test, specified by design z out ?200?m i out =100ma dc and i out =10ma rms 100 hz - 10 khz 5.2.5 current consumption i q ?0.41ma i out =10ma 4.4 v < v i <26v 5.2.6 ? 9 15 ma i out =100ma 5.2.7 output noise voltage 1) v noise ?330?v rms 10 hz - 100 khz c out =100f 5.2.8 long term stability 1) v out,1000h ?13?mv /1000h ? 5.2.9 ripple rejection 1) psrr ?80?db f ripple =120hz 5.2.10 dropout voltage 2) v i - v out 2) obtained when the output voltage has dropped 100mv below the nominal value v dr ?0.851.1v i out =100ma, t j =25c
tlf2931 electrical characteristics data sheet 9 rev. 1.0, 2010-10-06 5.3 typical performance characteristics dropout voltage v dr versus output current i out TLF2931GV50: output voltage v out versus input voltage v i tlf2931gv33: output voltage v out versus input voltage v i load transient response dr v q 0 25 aed0197 8 100 200 3 00 400 500 600 mv 8 00 50 100 ma 175 75 125 = c 125 25 c = 700 j t j t 0 0 aed019 8 4 v q 24 6 10 2 4 v 6 8 1 3 5 l r =50 v v 0,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 0246810 v i [v] v q [v] i q = 50 ma v33 _vq _vi .vsd -80 -60 -40 -20 0 20 40 60 v out [mv] c out = 100 f esr(c out ) = 0.4 0 20 40 60 80 100 120 140 160 -10 0 10 20 30 40 50 60 70 80 90 t [s] out [ma] loadtransientresponse.vsd
data sheet 10 rev. 1.0, 2010-10-06 tlf2931 electrical characteristics TLF2931GV50: output voltage v out versus junction temperature t j tlf2931gv33: output voltage v out versus junction temperature t j output current i out versus input voltage v i current consumption i q versus low output current i out 4.60 -40 aed019 8 2 v q 040 8 0 160 4. 8 0 5.00 v 5.20 120 c 4.70 4.90 5.10 i v =1 3 .5 v j t v33_vq_tj.vsd 2,90 3,00 3,10 3,20 3,30 3,40 3,50 -40 10 60 110 160 t j [c] v q [v] v i = 14 v 0 0 aed019 83 = c 125 25 c = q v 10 20 3 040 50 50 100 150 200 ma v j t j t q 0 0 aed019 8 1 ma 3 0 10 20 q 0.5 1.0 1.5 2.0 ma 3 .0 v i =1 3 .5 v 5 15 2.5
tlf2931 electrical characteristics data sheet 11 rev. 1.0, 2010-10-06 current consumption i q versus output current i out current consumption i q versus input voltage v i q 0 0 aed019 8 0 ma 150 50 100 q 2 4 6 8 ma 12 v i =1 3 .5 v 10 0 2 4 6 8 10 12 010203040 v i [v] i q [ma] r l = 50 r l = 100 iq_vi.vsd
data sheet 12 rev. 1.0, 2010-10-06 tlf2931 electrical characteristics power supply ripple rejection psrr versus frequency f TLF2931GV50: output capacitor?s equivalent series resistance esr(c out ) versus output current i out tlf2931gv33: output capacitor?s equivalent series resistance esr(c out ) versus output current i out 0,00 10,00 20,00 30,00 40,00 50,00 60,00 70,00 80,00 90,00 0,01 0,1 1 10 100 f [khz] psrr [db] i out = 1 ma c out = 10 f esr(c out ) = 0,02 i out = 10 ma i out = 100 ma psrr_f.vsd 0,00 1,00 2,00 3,00 4,00 5,00 6,00 7,00 8,00 9,00 10,00 020406080100 i out [ma] esr(c out ) [ ] c out = 10 f unstable region stable region esr_iout.vsd 0,00 1,00 2,00 3,00 4,00 5,00 6,00 7,00 8,00 9,00 10,00 0 20406080100 i out [ma] esr(c out ) [ ] c out = 10 f unstable region stable region v33_esr_iout.vsd
tlf2931 package outlines data sheet 13 rev. 1.0, 2010-10-06 6 package outlines figure 3 pg-dso-8 green product (rohs compliant) to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). +0.06 0.19 0. 3 5 x 45? 1) -0.2 4 c 8 max. 0.64 ?.2 6 ?.25 0.2 8 x m c 1.27 +0.1 0.41 0.2 m a -0.06 1.75 max. (1.45) ?.07 0.175 b 8 x b 2) index m a rking 5 -0.2 1) 4 1 8 5 a 1) doe s not incl u de pl as tic or met a l protr us ion of 0.15 m a x. per s ide 2) le a d width c a n be 0.61 m a x. in d a mb a r a re a gp s 011 8 1 0.1 for further information on alternativ e packages, please vi sit our website: http://www.infineon.com/packages . dimensions in mm
data sheet 14 rev. 1.0, 2010-10-06 tlf2931 revision history 7 revision history revision date changes 1.0 2010-10-06 data sheet
edition 2010-10-06 published by infineon technologies ag 81726 munich, germany ? 2010 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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