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automotive data sheet rev. 1.0, 2013-08-08 TLD1124EL 1 channel high side current source infineon ? basic led driver
data sheet 2 rev. 1.0, 2013-08-08 TLD1124EL 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 den pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 electrical characteristics inte rnal supply / den pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 in_set pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1 output current adjustment via rset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.2 smart input pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7st pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.1 diagnosis selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2 diagnosis output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.3 disable input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 load diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1 open load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.2 short circuit to gnd detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.3 electrical characteristics in_set pin and load diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 9power stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9.1 protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9.1.1 over load behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9.1.2 reverse battery protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9.2 electrical characteristics power stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 10 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 10.1 further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 11 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 12 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
pg-ssop14 type package marking TLD1124EL pg-ssop14 TLD1124EL data sheet 3 rev. 1.0, 2013-08-08 1 channel high side current source basic led driver TLD1124EL 1overview features ? 1 channel device with integrated output stage (cu rrent source), optimized to drive leds ? output current up to 360ma ? low current consumption ? pwm-operation supported via vs-pin ? output current adjustable via external low power resistor and possibility to connect ptc resistor for led protection during over temperature conditions ? reverse polarity protection ? overload protection ? undervoltage detection ? open load and short circuit to gnd diagnosis ? wide temperature range: -40 c < t j < 150 c ? pg-ssop14 package with exposed heatslug ? green product (rohs compliant) ? aec qualified description the basic led driver TLD1124EL is a one channel high side driver ic with integrated ou tput stage. it is designed to control leds with a current up to 360 ma. in typical au tomotive applications the device is capable to drive i.e. 3 red leds with a current up to 180 ma, which is limit ed by thermal cooling aspects. the output current is controlled practically independent of load and supply voltage changes. table 1 product summary operating voltage v s(nom) 5.5 v? 40 v maximum voltage v s(max) v out(max) 40 v nominal output (load) current i out(nom) 180 ma when using a supply voltage range of 8v - 18v (e.g. automotive car battery). currents up to i out(max) possible in applications with low thermal resistance r thja maximum output (load) current i out(max) 360 ma; depending on thermal resistance r thja output current accuracy at r set = 12 k k lt 2250 7%
data sheet 4 rev. 1.0, 2013-08-08 TLD1124EL overview protective functions - esd protection - under voltage lock out - over load protection - over temperature protection - reverse polarity protection diagnostic functions - diagnosis enable function - ol detection - sc to vs (indicated by ol diagnosis) - sc to gnd detection applications designed for exterior led lighting applications such as tail/ brake light, turn indicator, position light, side marker,... the device is also well suited for in terior led lighting applications such as ambient lighting, interior illumination and dash board lighting.
TLD1124EL block diagram data sheet 5 rev. 1.0, 2013-08-08 2 block diagram figure 1 basic block diagram output control out current adjust TLD1124EL gnd in_set status st internal supply thermal protection den vs diagnosis enable
data sheet 6 rev. 1.0, 2013-08-08 TLD1124EL pin configuration 3 pin configuration 3.1 pin assignment figure 2 pin configuration 11 12 13 14 TLD1124EL ep 10 4 3 2 1 5 nc st nc out den nc nc vs vs nc 6 7 in_set nc 9 8nc gnd
TLD1124EL pin configuration data sheet 7 rev. 1.0, 2013-08-08 3.2 pin definitions and functions pin symbol input/ output function 1, 2 vs ? supply voltage; battery supply, connect a decoupling capacitor (100 nf - 1 f) to gnd 3deni diagnosis enable pin 4nc? pin not connected 5nc? pin not connected 6 in_set i/o input / set pin; connect a low power resistor to adjust the output current 7nc? pin not connected 8nc? pin not connected 9gnd? 1) ground 1) connect all gnd-pins together. 10 st i/o status pin 11 nc ? pin not connected 12 out o output 13 nc ? pin not connected 14 nc ? pin not connected exposed pad gnd ? 1) exposed pad; connect to gnd in application
data sheet 8 rev. 1.0, 2013-08-08 TLD1124EL general product characteristics 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. absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with respect to ground, positive current flowing into pi n for input pins (i), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) 1) not subject to production test, specified by design pos. parameter symbol limit values unit conditions min. max. voltages 4.1.1 supply voltage v s -16 40 v ? 4.1.2 diagnosis enable voltage den v den -16 40 v ? 4.1.3 diagn. enable voltage den related to v s v den(vs) v s - 40 v s + 16 v ? 4.1.4 diagn. enable voltage den related to v out v den - v out v den - v out -16 40 v ? 4.1.5 output voltage v out -1 40 v ? 4.1.6 power stage voltage v ps = v s - v out v ps -16 40 v ? 4.1.7 in_set voltage v in_set -0.3 6 v ? 4.1.8 status voltage v st -0.3 6 v ? currents 4.1.9 in_set current i in_set ? ? 2 8 ma ? diagnosis output 4.1.10 output current i out ?390ma? temperatures 4.1.11 junction temperature t j -40 150 c? 4.1.12 storage temperature t stg -55 150 c? esd susceptibility 4.1.13 esd resistivity to gnd v esd -2 2 kv human body model (100 pf via 1.5 k ) 2) 2) esd susceptibility, human body model ?hb m? according to ansi/ esda/jedec js-001-2011 4.1.14 esd resistivity all pins to gnd v esd -500 500 v cdm 3) 3) esd susceptibility, charged device model ?cdm? according to jesd22-c101e 4.1.15 esd resistivity corner pins to gnd v esd -750 750 v cdm 3)
TLD1124EL general product characteristics data sheet 9 rev. 1.0, 2013-08-08 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 pos. parameter symbol limit values unit conditions min. max. 4.2.16 supply voltage range for normal operation v s(nom) 5.5 40 v ? 4.2.17 power on reset threshold v s(por) ?5v r set =12k i out = 80% i out(nom) v out =2.5v 4.2.18 junction temperature t j -40 150 c? pos. parameter symbol limit values unit conditions min. typ. max. 4.3.1 junction to case r thjc ?810k/w 1) 2) 1) not subject to production test, specifi ed by design. based on simulation results. 2) specified r thjc value is simulated at natural convection on a cold plate setup (all pins and t he exposed pad are fixed to ambient temperature). t a = 85c, total power dissipation 1.5 w. 4.3.2 junction to ambient 1s0p board r thja1 ? ? 61 56 ? ? k/w 1) 3) t a =85c t a = 135 c 3) the r thja values are according to jedec jesd51-3 at natural c onvection on 1s0p fr4 board. the product (chip + package) was simulated on a 76.2 x 114.3 x 1.5 mm 3 board with 70m cu, 300 mm 2 cooling area. total power dissipation 1.5 w distributed statically and ho mogenously over power stage. 4.3.3 junction to ambient 2s2p board r thja2 ? ? 45 43 ? ? k/w 1) 4) t a =85c t a = 135 c 4) the r thja values are according to jedec jesd51-5,-7 at natu ral convection on 2s2p fr4 board. the product (chip + package) was simulated on a 76.2 x 114.3 x 1.5 mm 3 board with 2 inner copper layers (outside 2 x 70 m cu, inner 2 x 35m cu). where applicable, a thermal via array under the expos ed pad contacted the first inne r copper layer. total power dissipation 1.5 w distributed statically and homogenously over power stage.
data sheet 10 rev. 1.0, 2013-08-08 TLD1124EL den pin 5 den pin the den pin is a single function pin: figure 3 block diagram den pin this pin is used to activate or deactivate the device internal diagnosis functions. the diagnostic functions are described in chapter 6.2 , chapter 7 and chapter 8 . the diagnosis is activated, if the voltage applied at the den pin v den is higher than v den(act) . the diagnosis is disabled for voltages below v den(dis) . a possibility to use the den pin is via a zener diode, which is connected between vs and den pin. a circuit example is shown in the app lication information section chapter 10 . the diagnosis is activated, if th e following condition is fulfilled: (1) the current consumption on the den pin has to be consi dered for the total device current consumption. the current is specified in pos. 5.1.8 . the typical current consumption i den(h) as a function of the supply voltage v s for a zener diode voltage of v zd = 6 v is shown in the following diagram. figure 4 typical i den(h) current for a zener diode voltage of 6v the device and channel turn on is independent of the v den -voltage. after applying a supply voltage the device is activated after the po wer on reset time t por . v den den output control i den v s v den act () v zd + 0 20 40 60 80 100 120 140 160 0 2 4 6 8 10 12 14 16 18 i den [a] v s [v] typical i den =f(v s ) with (v s -v den )=6v tj=-40c tj=25c tj=150c
TLD1124EL den pin data sheet 11 rev. 1.0, 2013-08-08 figure 5 power on reset the den voltage v den does not influence the disable function via the st pin. if v den < v den(dis) the device can still be disabled via the st pin, if v st > v st(h) . for details, please refer to chapter 7.3 . 5.1 electrical characteristics internal supply / den pin electrical characteristics internal supply / den pin unless otherwise specified: v s = 5.5 v to 40 v, t j = -40 c to +150 c, r set =12k all voltages with respect to ground, positive current flowing into pin for input pins (i ), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 5.1.1 current consumption, active mode i s(on) ?? 1.9ma 1) i in_set = 0a t j < 105 c v s = 18 v v out = 3.6v 5.1.2 current consumption, device disabled via st i s(dis,st) ?? 1.7ma 1) v s = 18 v t j < 105 c v st = 5 v 5.1.3 current consumption, device disabled via in_set i s(dis,in_set) ?? 1.7ma 1) v s = 18 v t j < 105 c v in_set = 5 v 5.1.4 current consumption, active mode in fault detection condition with st- pin unconnected i s(fault,stu) ?? 2.1ma 1) v s = 18 v t j < 105 c r set = 12 k v out = 18 v or 0 v 5.1.5 current consumption, active mode in fault detection condition with st- pin connected to gnd i s(fault,stg) ?? 6.2ma 1) v s = 18 v t j < 105 c r set = 12 k v out = 18 v or 0 v v st = 0 v t 80% t por i out 100% v s
data sheet 12 rev. 1.0, 2013-08-08 TLD1124EL den pin 5.1.6 power-on reset delay time 2) t por ?? 25s 3) v s =0 13.5 v v out(nom) = 3.6 0.3v i out =80% i out(nom) 5.1.7 required supply voltage for current control v s(cc) ?? 5.5v v out = 3.6 v i out 90% i out(nom) 5.1.8 den high input current i den(h) ? ? ? ? ? ? ? ? 0.1 0.1 0.2 0.4 ma t j < 105 c v s = 13.5 v, v den = 5.5 v v s = 18 v, v den = 5.5 v v s = 18 v, v den = 12 v v s = v den = 18 v 5.1.9 den activation threshold (diagnosis enabled above v den(act) ) v den(act) 2.45 ? 3.2 v v s = 8...18 v 5.1.10 den deactivation threshold (diagnosis disabled below v den(dis) ) v den(dis) 1.5 ? 2.3 v v s = 8...18 v 1) the total device current consumption is the sum of the currents i s and i den(h) , please refer to pos. 5.1.8 2) see also figure 4 3) not subject to production test, specified by design electrical characteristics internal supply / den pin (cont?d) unless otherwise specified: v s = 5.5 v to 40 v, t j = -40 c to +150 c, r set =12k all voltages with respect to ground, positive current flowing into pin for input pins (i ), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max.
TLD1124EL in_set pin data sheet 13 rev. 1.0, 2013-08-08 6 in_set pin the in_set pin is a multiple function pin for ou tput current definition, input and diagnostics: figure 6 block diagram in_set pin 6.1 output current ad justment via rset the current adjustment can be done by placing a low power resistor ( r set ) at the in_set pin to ground. the dimensioning of the resistor can be done using the formula below: (2) the gain factor k ( r set * output current) is specified in pos. 9.2.4 and pos. 9.2.5 . the current through the r set is defined by the resistor itse lf and the reference voltage v in_set(ref) , which is applied to the in_set during supplied device. 6.2 smart input pin the in_set pin can be connected via r set to the open-drain output of a c or to an external nmos transistor as described in figure 7 this signal can be used to turn off the ou tput stage of the ic. a minimum in_set current of i in_set(act) is required to turn on the output stage. this feature is implemented to prevent glimming of leds caused by leakage currents on the in_set pin, see figure 10 for details. in addition, the in_set pin offers the diagnostic feedback information, if th e status pin is connected to gnd and v den > v den(act) (refer to chapter 5 ). another diagnostic possibility is shown in figure 8 , where the diagnosis information is provided via the st pin (refer to chapter 7 and chapter 8 ) to a micro controller in case of a fault event with the st pin connected to gnd the in_set voltage is increased to v in_set(ol/sc) pos. 8.3.2 . therefore, the device has two voltage domains at the in_set-pin, which is shown in figure 11 . i in_set v in_set(ol/sc) in_set gnd v in_set logic high impedance r set k i out ----------- =
data sheet 14 rev. 1.0, 2013-08-08 TLD1124EL in_set pin figure 7 schematics in_set interface to c, diagnosis via in_set pin figure 8 schematics in_set interface to c, diagnosis via st pin the resulting switching times are shown in figure 9 : figure 9 switching times via in_set r set /2 microcontroller (e.g. xc866) out v ddp = 5 v current adjust in_set gnd basic led driver r set /2 in status st microcontroller (e.g. xc866) out v ddp = 5 v current adjust in_set gnd basic led driver in status st r set optional i in_ set t t 20% 80% t on(in_set ) i out 100% t off(in _ set)
TLD1124EL in_set pin data sheet 15 rev. 1.0, 2013-08-08 figure 10 i out versus i inset figure 11 voltage domains for in_set pin, if st pin is connected to gnd i in_set(act) i in_set [a] i out [ma] k = i outx * v in_set(ref) / i in_setx i outx i in_setx v in _s e t (ref ) m ax v in_ set(ol/sc)min v in_set v in _set(ol /sc)max normal operation and high temperature current reduction range diagnostic voltage range
data sheet 16 rev. 1.0, 2013-08-08 TLD1124EL st pin 7st pin the st pin is a multiple function pin. figure 12 block diagram st pin 7.1 diagnosis selector if the voltage at the den pin v den is higher than v den(act) , the diagnosis is activated. for details, please refer to chapter 5 . if the status pin is unconnected or co nnected to gnd via a high ohmic resistor ( v st to be below v st(l) ), the st pin acts as diagnosis output pin. in normal operation (device is activa ted) the st pin is pulled to gnd via the internal pull down current i st(pd) . in case of an open load or short circui t to gnd condition the st pin is switched to v st(ol/sc) after the open load or short circuit detection filter time ( pos. 8.3.9 , pos. 8.3.12 ). if the device is operated in pwm operation via the vs pin the st pin should be connected to gnd via a high ohmic resistor (e.g. 470k ) to ensure proper device behavior during fast rising vs slope. if the st pin is shorted to gnd the diagnostic feed back is performed via the in_set-pin, which is shown in chapter 6.2 and chapter 8 . 7.2 diagnosis output if the status pin is unconne cted or connected to gnd via a high ohmic resistor ( v st to be below v st(l) ), it acts as a diagnostic output, if the voltage at the den pin is above v den(act) . in case of a fault condition the st pin rises its voltage to v st(ol/sc) ( pos. 8.3.7 ). details are shown in chapter 8 . 7.3 disable input if an external voltage higher than v st(h) ( pos. 8.3.5 ) is applied to the st pin, th e device is switched off. this function is working independently of the voltage at t he den pin. even if the diagnosis is disabled via v den < v den(dis) the disable function of the st pin is working. th is function is used for applications, where multiple drivers should be used for one light function. it is possible to combine the drivers? fault diagnosis via the st pins. if a single led chain fails, the entire light function is switched off. in this scenario e.g. t he diagnostic circuit on the body control module can easily distinguish between the two cases (normal load or load fault), because nearly no current is flowing into the led module during the fault scenario - the drivers consume a current of i s(fault,stu) ( pos. 5.1.4 ) or i s(dis,st) ( pos. 5.1.2 ). i st(ol/sc) v st st output control fault no fault v st(ol/sc) i st(pd) fault no fault
TLD1124EL st pin data sheet 17 rev. 1.0, 2013-08-08 as soon as one led chain fails, the st -pin of this device is switched to v st(ol/sc) . the other devices used for the same light function can be connected toge ther via the st pins. this leads to a switch off of all devices connected together. application examples are shown in chapter 10 . figure 13 switching times via st pin v st t t 20% 80% t on(st) i out 100% t off( st)
data sheet 18 rev. 1.0, 2013-08-08 TLD1124EL load diagnosis 8 load diagnosis the diagnosis function is enabled, if the voltage at the den pin v den is above v den(act) as described in chapter 5 . 8.1 open load an open load diagnosis feature is integrated in the tld112 4el driver ic. if there is an open load on the output, the output is turned off. the potential on the in_set pin rises up to v in_set(ol/sc) . this high voltage can be used as input signal for an c as shown in figure 8 . the open load status is not la tched, as soon as the open load condition is no longer present, the output stage will be turned on aga in. an open load conditio n is detected, if the voltage drop over the output stage v ps is below the th reshold according pos. 8.3.10 and a filter time of t ol is passed. figure 14 in_set behavior during open load condi tion with st pin connected to gnd and v den > v den(act) t v s ?v ps(ol ) t ol v out t v f v in_ set(ref ) v in _set(ol /sc) v s v in_set open load occurs open load disappears t in _set (re se t)
TLD1124EL load diagnosis data sheet 19 rev. 1.0, 2013-08-08 figure 15 in_set and st behavior during open load condition (st unconnected) and v den > v den(act) 8.2 short circuit to gnd detection the TLD1124EL has an integrated sc to gnd detection. if th e output stage is turned on and the voltage at the output falls below v out(sc) the potential on the in_set pin is increased up to v in_set(ol/sc) after t sc , if the st pin is connected to gnd. if the st is open or connected to gnd via a high ohmic resistor the fault is indicated on the st pin according to chapter 7 after t sc . more details are shown in figure 17 . this condition is not latched. for detecting a normal condition after a short circ uit detection an output current according to i out(sc) is driven by the channel. t v s ?v ps(ol) t ol v out v f v s open load occurs open load disappears t in_set(reset) v st t v st(ol /sc) v in_set t v in _set(ref )
data sheet 20 rev. 1.0, 2013-08-08 TLD1124EL load diagnosis figure 16 in_set behavior during short circuit to gnd condition with st connected to gnd and v den > v den(act) figure 17 in_set and st behavior during short circuit to gnd condition (st unconnected) and v den > v den(act) t v out (s c) t sc v out v in_set t v f v in _set(ref ) v in _set(ol /sc) t in_ set( re se t) short circuit occurs short circuit disappears t v out (s c) t sc v out v st t v f v st(ol/sc) t in _set (re se t) short circuit occurs short circuit disappears v in_set t v in_ set(ref )
TLD1124EL load diagnosis data sheet 21 rev. 1.0, 2013-08-08 8.3 electrical characteristics in _set pin and load diagnosis electrical characteristics in _set pin and load diagnosis unless otherwise specified: v s = 5.5 v to 40 v, t j = -40 c to +150 c, r set = 12 k , v den = 5.5 v, all voltages with respect to ground, positive current flowing into pin for input pins (i), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 8.3.1 in_set reference voltage v in_set(ref) 1.19 1.23 1.27 v 1) v out =3.6v t j = 25...115 c 8.3.2 in_set open load/short circuit voltage v in_set(ol/sc) 4? 5.5v 1) v s > 8 v t j = 25...150 c v s = v out (ol) or v outx = 0 v (sc) 8.3.3 in_set open load/short circuit current i in_set(ol/sc) 1.5 ? 7.4 ma 1) v s > 8 v t j = 25...150 c v in_set = 4 v v s = v out (ol) or v out = 0v (sc) 8.3.4 st device turn on threshold (active low) in case of voltage applied from external (st-pin acting as input) v st(l) 0.8 ? ? v ? 8.3.5 st device turn off threshold (active low) in case of voltage applied from external (st-pin acting as input) v st(h) ?? 2.5v? 8.3.6 st pull down current i st(pd) ?? 15a v st =0.8v 8.3.7 st open load/short circuit voltage (st-pin acting as diagnosis output) v st(ol/sc) 4? 5.5v 1) v s > 8 v t j = 25...150 c r st = 470 k v s = v out (ol) or v out = 0v (sc) 8.3.8 st open load/short circuit current (st-pin acting as diagnosis output) i st(ol/sc) 100 ? 220 a 1) v s > 8 v t j = 25...150 c v st = 2.5 v v s = v out (ol) or v out = 0v (sc) 8.3.9 ol detection filter time t ol 10 22 35 s 1) v s >8v 8.3.10 ol detection voltage v ps(ol) = v s - v out v ps(ol) 0.2 ? 0.4 v v s >8v 8.3.11 short circuit to gnd detection threshold v out(sc) 0.8 ? 1.4 v v s >8v 8.3.12 sc detection filter time t sc 10 22 35 s 1) v s > 8 v 8.3.13 in_set diagnosis reset time t in_set(reset) ?5 20s 1) v s > 8 v
data sheet 22 rev. 1.0, 2013-08-08 TLD1124EL load diagnosis 8.3.14 sc detection current in case of unconnected st- pin i out(sc,stu) 100 200 300 a v s > 8 v v out = 0 v 8.3.15 sc detection current in case of st-pin shorted to gnd i out(sc,stg) 0.1 2 4.75 ma v s > 8 v v out = 0 v v st = 0 v 8.3.16 in_set activation current without turn on of output stage i in_set(act) 2 ? 15 a see figure 10 1) not subject to production test, specified by design electrical characteristics in _set pin and load diagnosis (cont?d) unless otherwise specified: v s = 5.5 v to 40 v, t j = -40 c to +150 c, r set = 12 k , v den = 5.5 v, all voltages with respect to ground, positive current flowing into pin for input pins (i), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max.
TLD1124EL power stage data sheet 23 rev. 1.0, 2013-08-08 9 power stage the output stage is realized as high side current source with a current of 360 ma. during off state the leakage current at the output stage is minimized in order to prevent a slightly glowing led. the maximum current of the channel is limited by the power dissipation and used pcb cooling areas (which results in the applications r thja ). for an operating current control loop the supply and output voltages according to the following parameters have to be considered: ? required supply voltage for current control v s(cc) , pos. 5.1.7 ? voltage drop over output stage during current control v ps(cc) , pos. 9.2.6 ? required output voltage for current control v out(cc) , pos. 9.2.7 9.1 protection the device provides embedded protective functions, wh ich are designed to prevent ic destruction under fault conditions described in this data sheet. fault condit ions are considered as ?out side? normal operating range. protective functions are neither designed fo r continuous nor for repetitive operation. 9.1.1 over load behavior an over load detection circuit is integrated in the basi c led driver ic. it is realized by a temperature monitoring of the output stage (out). as soon as the junction temperature exceed s the current reduction temperature threshold t j(crt) the output current will be reduced by the device by re ducing the in_set reference voltage v in_set(ref) . this feature avoids led?s flickering during static output overload conditions. furtherm ore, it protects leds against over temperature, which are mounted thermally cl ose to the device. if the devic e temperature still increases, the output curr ent decreases close to 0 a. as soon as the device cools down the output current rises again. figure 18 output current reduction at high temperature note: this high temperature output current reduction is r ealized by reducing the in_set reference voltage voltage ( pos. 8.3.1 ). in case of very high power loss applied to th e device and very high junction temperature the output current may drop down to i out = 0 ma, after a slight cooling down the current increases again. 9.1.2 reverse battery protection the TLD1124EL has an integrated reverse battery protection fe ature. this feature protects the driver ic itself, but also connected leds. the output reverse current is limited to i outx(rev) by the reverse battery protection. t j i out t j(crt) v in_set
data sheet 24 rev. 1.0, 2013-08-08 TLD1124EL power stage note: due to the reverse battery protection a reverse protec tion diode for the light module may be obsolete. in case of high iso-pulse requirements and only minor protec ting components like capacitors a reverse protection diode may be reasonable. the external protection circuit needs to be verified in the application. 9.2 electrical charact eristics power stage electrical characteristics power stage unless otherwise specified: v s = 5.5 v to 18 v, t j = -40 c to +150 c, v out = 3.6 v, all voltages with respect to ground, positive current flowing into pin for input pins (i ), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 9.2.1 output leakage current i out(leak) ? ? ? ? 21 9 a i in_set = 0 a v out =2.5v t j = 150 c 1) t j = 85 c 9.2.2 output leakage current in boost over battery setup -i out(leak,b2b) ??150a 1) i in_set =0a v out = v s = 40 v 9.2.3 reverse output current -i out(rev) ??3a 1) v s = -16 v output load: led with break down voltage <-0.6v 9.2.4 output current accuracy limited temperature range k lt 2092 1800 2250 2250 2408 2700 1) t j = 25...115 c v s = 8...18 v v ps = 2 v r set = 12 k r set = 30 k 9.2.5 output current accuracy over temperature k all 1980 1710 2250 2250 2520 2790 1) t j = -40...115 c v s = 8...18 v v ps = 2 v r set = 6...12 k r set = 30 k 9.2.6 voltage drop over power stage during current control v ps(cc) = v s - v out v ps(cc) 0.75 ? ? v 1) v s = 13.5 v r set = 12 k i out 90% of ( k lt(typ) / r set ) 9.2.7 required out put voltage for current control v out(cc) 2.3 ? ? v 1) v s = 13.5 v r set = 12 k i out 90% of ( k lt(typ) / r set ) 9.2.8 maximum output current i out(max) 360 ? ? ma r set = 4.7 k the maximum output current is limited by the thermal conditions. please refer to pos. 4.3.1 - pos. 4.3.3
TLD1124EL power stage data sheet 25 rev. 1.0, 2013-08-08 9.2.9 st turn on time t on(st) ??15s 2) v s = 13.5 v r set = 12 k st l i out = 80% of ( k lt(typ) / r set ) 9.2.10 st turn off time t off(st) ??10s 2) v s = 13.5 v r set = 12 k st h i out = 20% of ( k lt(typ) / r set ) 9.2.11 in_set turn on time t on(in_set) ??15s v s = 13.5 v i in_set = 0 100 a i out = 80% of ( k lt(typ) / r set ) 9.2.12 in_set turn off time t off(in_set) ??10s v s = 13.5 v i in_set =100 0a i out = 20% of ( k lt(typ) / r set ) 9.2.13 current reduction temperature threshold t j(crt) ?140?c 1) i out = 95% of ( k lt(typ) / r set ) 9.2.14 output current during current reduction at high temperature i out(crt) 85% of ( k lt(typ) / r set ) ??a 1) r set =12k t j = 150 c 1) not subject to production test, specified by design 2) see also figure 13 electrical characteristics power stage (cont?d) unless otherwise specified: v s = 5.5 v to 18 v, t j = -40 c to +150 c, v out = 3.6 v, all voltages with respect to ground, positive current flowing into pin for input pins (i ), positive currents flowing out of the i/o and output pins (o) (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max.
data sheet 26 rev. 1.0, 2013-08-08 TLD1124EL application information 10 application information note: the following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. figure 19 application diagram note: this is a very simplified example of an application circuit. in case of high iso-pulse requirements a reverse protection diode may be used for le d protection. the function must be ve rified in the real application. 10.1 further application information ? for further information you may contact http://www.infineon.com/ r set microcontroller (e.g. xc866) out in light module eventually to other basic led driver 470k * * in case pwm via vs is performed . ** for emi improvement, if required. v batt 4.7nf** c st =100pf** output control out current adjust basic led driver gnd in_set status st internal supply thermal protection den vs diagnosis enable c mo d =2.2f is o-p u lse protection circuit depending on requirements c vs =4.7nf
TLD1124EL package outlines data sheet 27 rev. 1.0, 2013-08-08 11 package outlines figure 20 pg-ssop14 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). pg-ssop-14-1,-2,-3-po v02 1 7 14 8 14 17 8 14x 0.25 ?.05 2) m 0.15 d c a-b 0.65 c stand off 0 ... 0.1 (1.45) 1.7 max. 0.08 c a b 4.9 ?.1 1) a-b c 0.1 2x 1) does not include plastic or metal protrusion of 0.15 max. per side 2) does not include dambar protrusion bottom view ?.2 3 ?.2 2.65 0.2 ?.2 d 6 m d 8x 0.64 ?.25 3.9 ?.1 1) 0.35 x 45? 0.1 cd +0.06 0.19 8 ? max. index marking exposed diepad dimensions in mm for further information on alternativ e packages, please vi sit our website: http://www.infineon.com/packages .
data sheet 28 rev. 1.0, 2013-08-08 TLD1124EL revision history 12 revision history revision date changes 1.0 2013-08-08 inital revision of data sheet
edition 2013-08-08 published by infineon technologies ag 81726 munich, germany ? 2013 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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