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| tle4247 constant current relay driver datasheet, rev. 1.01, may 2010 automotive power
datasheet 2 rev. 1.01, 2010-05-04 tle4247 table of contents 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.2 electrical characteristics tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table of contents pg-dso-8 (exposed pad) type package marking tle4247 el40 pg-dso-8 (exposed pad) 4247-40 datasheet 3 rev. 1.01, 2010-05-04 constant current relay driver tle4247 1overview features ? reduces relay hold current to min. 40 ma ? functional at low battery voltage. ? active freewheeling path using relay integrated freewheeling resistor. ? over temperature protection ? green product (rohscompliant) ? aec-q100 qualified description the tle4247 is intended to drive relays with a constant cu rrent in order to reduce the coil current during relay hold phase. for relay activation, the ic pass element works as an activated switch for a limited period of time. after the activation time period has elapsed, the ic reduces the relay coil current to a lower constant value. different operation modes allow adequate functionality also at very low or very high battery voltage. the ic is suited to operate with re lay coil inductance, freewheeling resistor, operating voltage and environment conditions as required in automotive applications. for de tails see operation range and electrical characteristics tables. tle4247 block diagram datasheet 4 rev. 1.01, 2010-05-04 2 block diagram figure 1 block diagram and simplified application circuit 5 ) , 1 & * 1 ' ' 6 5 h o d \ & r l o ' u l y h u ' h o d \ % o r f n ' l d j u d p v y j / 5 5 / & ' ) z g & w u o ) u h h z k h h o l q j 5 h v l v w r u & r q v w d q w & x u u h q w 5 h o d \ ' u l y h u 5 h o d \ $ % % l d v l q j % d q g j d s & 6 datasheet 5 rev. 1.01, 2010-05-04 tle4247 pin configuration 3 pin configuration 3.1 pin assignment figure 2 pin configuration 3.2 pin definitions and functions pin symbol function 1s ic supply; connect to relay coil freewheeling resistor according to figure 1 . 2, 3, 6, 7 n.c. not connected; connection to heat sink area and cgnd recommended. 4d delay; for generating the activation time length, connect a ceramic capacitor between pin d and cgnd. 5cgnd relay coil current output and ic ground; 8in relay coil current input; connect to relay coil according to figure 1 . exposed pad ? exposed pad; interconnect with cgnd and heat sink area on pcb. q f q f q f & * 1 ' , 1 6 q f ' 3 * ' 6 2 h [ s r v h g s d g 3 l q r x w v y j tle4247 general product characteristics datasheet 6 rev. 1.01, 2010-05-04 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. integrated protection functions are desi gned to prevent ic destruction unde r 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. absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with resp ect to cgnd, positive cu rrent flowing into pin (unless otherwise specified) 1) not subject to production test, specified by design. pos. parameter symbol limit values unit conditions min. max. pin s (ic supply) 4.1.1 voltage at pin s v s -0.3 45 v v s > v in or v in open; i s externally not limited 4.1.2 current into pin s i s -400 ? ma v s < -0.3v pin in (relay coil current input) 4.1.3 voltage at pin in v in -0.3 30 v v s > v in or v s open; i in externally not limited 4.1.4 current into pin in i in -250 400 ma ? pin d (delay) 4.1.5 voltage at pin d v d -0.3 6.8 v temperatures 4.1.6 junction temperature t j -40 150 c? 4.1.7 storage temperature t stg -55 150 c? esd susceptibility 4.1.8 esd resistivity to cgnd v esd,hbm -4 4 kv hbm 2) 2) esd susceptibility, human body model ?hbm? according to eia/jesd 22-a114b 4.1.9 esd resistivity middle pins v esd,cdm -1.5 1.5 kv cdm 3) 3) esd susceptibility, charged device model ?cdm? according to eia/jesd22-c101 or esda stm5.3.1 datasheet 7 rev. 1.01, 2010-05-04 tle4247 general product characteristics 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. 4.3 thermal resistance 1) pos. parameter symbol limit values unit conditions min. max. 4.2.10 supply voltage v s 330v? 4.2.11 input capacitance c s 70 ? nf typ. 100nf/50v recommended for compensating line influences 4.2.12 delay capacitance c d 250 ? nf typ. 470nf/6.3v recommended 4.2.13 junction temperature t j -40 150 c? 4.2.14 relay coil inductance l r ?1000mh? 4.2.15 relay coil series resistance r l 60 120 ? ? 4.2.16 relay freewheeling resistor r f 420 750 ? ? 1) not subject to production test, specified by design. pos. parameter symbol limit values unit conditions min. typ. max. pg-dso-8 (exposed pad): 4.3.1 junction to case bottom r thjc ?10?k/w? 4.3.2 junction to ambient r thja ?70?k/w 1) 1) eia/jesd 52_2, fr4, 80 80 1.5 mm; 35 cu, 5 sn; 300 mm 2 tle4247 operation modes datasheet 8 rev. 1.01, 2010-05-04 5 operation modes 5.1 description the tle4247 provides two different operation modes: for relay activation, the ic pass element works as an activated switch with lo west dropout voltage v dr (see figure 3 a). after the activation time period t actv has elapsed, the ic switches to hold mode regulating the relay coil current to constant values (see figure 3 b). during commutation, the relay coil current flows from the ic input ?in? to ?s? into th e relay freewheeling resistor. a zener structure prevents the ic from overvolt age by limiting the input voltage transient to v z . the relay activation time period t actv is generated by charging the external capacitor c d at pin d with a constant current. this time period starts once the ic supply voltage exceeds v s,start . in case the ic supply voltage v s falls below the threshold v s,hold-actv , the ic changes to active mode allowing maximum relay current flow at low vehicle battery voltage. at low supply voltage, the ic switches to ?low voltage mode? with lowest current consumption. as in activation mode, the ic is working as a switch with lowest dropout voltage. in order to prevent the ic from excessive power dissipat ion at high supply voltage, the ic is working as a switch (high voltage mode). a transition to hold mode during this mode is not possible. an overtemperature protection circui t prevents the ic from immediate de struction under fault conditions by reducing the output curr ent. a thermal balance below 200 c junction temperature will be established. please note that a junction temperature above 150 c is outsid e the maximum ratings and reduces the ic lifetime. figure 3 operation as switch or current source % o r f n ' l d j u d p b 0 r g h v v y j , , 1 + r o g e + r o g 0 r g h d $ f w l y d w l r q 0 r g h + l j k 9 r o w d j h 0 r g h / r z 9 r o w d j h 0 r g h , 1 & * 1 ' ' 6 ' u l y h u ) z g & r q w u r o % l d v l q j % d q g j d s ' h o d \ , 1 & * 1 ' ' 6 ' u l y h u ) z g & r q w u r o % l d v l q j % d q g j d s ' h o d \ 9 ' 5 9 = 9 = datasheet 9 rev. 1.01, 2010-05-04 tle4247 operation modes figure 4 principle of operation figure 5 conditions of transition between modes, definition of parameters 9 , 1 w 9 6 3 u l q f l s o h 2 i 2 s h u d w l r q v y j w w , , 1 w $ f w y 9 ' w 9 ' 5 , , 1 + r o g / r z 9 r o w d j h 0 r g h 9 6 w r r o r z x q g h i l q h g 9 6 * r / 9 0 9 6 p l q 9 6 w r r o r z x q g h i l q h g / r z 9 r o w d j h 0 r g h 9 6 6 w d u w 9 = 9 ' k l 9 6 * r + 9 0 k l 9 6 * r + 9 0 o r + r o g 0 r g h & r q v w d q w & x u u h q w 5 h j x o d w l r q + l j k 9 r o w d j h 0 r g h + l j k 9 r o w d j h 0 r g h $ f w l y d w l r q 0 r g h 9 6 w r r o r z x q g h i l q h g / r z 9 r o w d j h 0 r g h $ f w l y d w l r q 0 r g h / r z 9 r o w d j h 0 r g h $ f w l y d w l r q 0 r g h + r o g 0 r g h / r z 9 r o w d j h 0 r g h $ f w l y d w l r q 0 r g h + r o g 0 r g h + l j k 9 r o w d j h 0 r g h 9 6 * r + 9 0 k l 9 6 * r + 9 0 k l 9 6 * r + 9 0 o r 9 6 6 w d u w 9 6 * r / 9 0 w $ f w 0 r g h v b % x e e o h ' l d j u d p v y j tle4247 operation modes datasheet 10 rev. 1.01, 2010-05-04 5.2 electrical characteristics tables t j = -40 c to +150 c, all voltages with respect to ground, positive curr ent flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. general 5.2.1 freewheeling path drop voltage v in-s 12v i in-s = 400 ma 5.2.2 input zener voltage v z 30 45 v i z = 50 ma 5.2.3 overtemperature shutdown threshold 1) t j,sd 151 ? 200 c t j increasing due to power dissipation generated by the ic. activation mode, v s v s,start , unless otherwise specified 5.2.4 activation mode timing start supply voltage threshold v s,start 789v v s increasing 5.2.5 activation time period t actv 65 100 135 ms c d = 470 nf 5.2.6 dropout voltage activation mode v dr,actv ?0.91.3v i in = 200 ma v s = 9v 5.2.7 current consumption activation mode i s,actv ? 0.85 1.5 ma i in = 200 ma v s = 9v hold mode, v s,gohvm v s v s,golvm , unless otherwise specified 5.2.8 relay coil hold current i in,hold 40 50 60 ma ? 5.2.9 current consumption hold mode i s,hold ? 0.85 1.5 ma v s = 9v ?11.8ma v s = 18v low voltage mode, v s,start v s 3 v, unless otherwise specified 5.2.10 go to low voltage mode threshold v s,golvm 678v v s decreasing 5.2.11 go to low voltage mode hysteresis v s,golvm,hy 0.7 1 ? v calculated value: v s,golvm,hy = v s,start - v s,golvm 5.2.12 dropout voltage low voltage mode v dr,lvm ? 0.85 1.3 v i in = 40 ma 5.2.13 dropout voltage low voltage mode v dr,lvm ? 0.85 1.0 v i in = 40 ma; t j = 25c 5.2.14 current consumption low voltage mode i s,lvm ? 0.65 1.1 ma v s = 3v; i in = i in,hold ? 0.85 1.4 ma v s = 7v; i in = i in,hold datasheet 11 rev. 1.01, 2010-05-04 tle4247 operation modes high voltage mode, v s v s,gohvm, , unless otherwise specified 5.2.15 go to high voltage mode upper threshold v s,gohvm,hi 19 ? 21 v v s increasing 5.2.16 go to high voltage mode lower threshold v s,gohvm,lo 18 ? 20 v v s decreasing 5.2.17 go to high voltage mode hysteresis v s,gohvm,hy 0.7 1 ? v calculated value: v s,gohvm,hy = v s,gohvm,hi - v s,gohvm,lo 5.2.18 dropout voltage high voltage mode v dr,hvm ?1.11.6v i in = 400 ma; v s = 28v 5.2.19 current consumption high voltage mode i s,hvm ?11.8ma i in = 400 ma; v s = 28v 1) specified by design, not subject to production test. t j = -40 c to +150 c, all voltages with respect to ground, positive curr ent flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. tle4247 package outlines datasheet 12 rev. 1.01, 2010-05-04 6 package outlines figure 6 pg-dso-8 (exposed pad) outline and recommended footprint for reflow soldering green product 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). pg-dso-8-27-fp v01 1.27 5.69 0.65 1.31 2.65 3 pg-dso-8-27-po v01 14 85 8 14 5 8x 0.41 ?.09 2) m 0.2 d c a-b 1.27 c stand off +0 -0.1 0.1 (1.45) 1.7 max. 0.08 seating plane c a b 4.9 ?.1 1) a-b c 0.1 2x 3 ) jedec reference ms-012 variation ba 1) does not include plastic or metal protrusion of 0.15 max. per side 2) dambar protrusion shall be maximum 0.1 mm total in excess of lead width bottom view ?.2 3 ?.2 2.65 0.2 ?.2 d 6 m d 8x 0.64 ?.25 3.9 ?.1 1) 0.1 0.35 x 45? cd2x +0.06 0.19 8 ? max. index marking for further information on infineon packages, please visit our website: http://www.infineon.com/packages . dimensions in mm datasheet 13 rev. 1.01, 2010-05-04 tle4247 revision history 7 revision history revision date changes 1.01 2010-05-04 final datasheet. edition 2010-05-04 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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