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TCV7103AF 2012-02-28 1 toshiba cmos integrated circuit silicon monolithic TCV7103AF buck dc-dc converter ic the TCV7103AF is a single-chip buck dc-dc converter ic. the TCV7103AF contains high-sp eed and low-on-resistance power mosfets to achieve synchronous rectification using an external low-side mosfet, or rectification using an external diode, allowing for high efficiency. features ? enables up to 6.5a (@ v in = 5v) 6a (@ v in = 3.3v) of load current (i out ) with a minimum of external components. ? high efficiency: = 95% (typ.)(@v in = 5v, v out = 3.3v, i out = 2a) (when using the ssm6k411tu as a low-side mosfet) ? operating voltage range: v in = 2.7v to 5.6v ? low on-resistance: r ds (on) = 0.08 (high-side) typical (@v in = 5v, tj = 25c) ? oscillation frequency: f osc = 1000khz (typ.) ? feedback voltage: v fb = 0.8v 1% (@ tj = 0 to 85 c) ? incorporates an n-channel mosfet driver for synchronous rectification ? uses internal phase compensation to achieve high efficiency with a minimum of external components. ? allows the use of a small surface-mount ceramic capacitor as an output filter capacitor. ? housed in a small surface-mount package (sop advance) with a low thermal resistance. ? soft-start time adjustable by an external capacitor ? overcurrent protection (o cp) with latch function part marking pin assignment this product has a mos structure and is sensitive to electrostatic discharge. handle with care. the product(s) in this document (?product?) contain fu nctions intended to protect the product from temporary small overloads such as minor short-term overcurrent, or overheating. the pr otective functions do not necessarily protect product under all circumstances. when incorporating product into your system, please design the system (1) to avoid such overloads upon the product, and (2) to shut down or otherwise relieve the product of such overload conditions immediately upon occurrence. for details, please refer to the notes appearing below in this document and other documents referenced in this document. hson8-p-0505-1.27 weight: 0.068 g (typ.) part number (or abbreviation code) tcv 7103af lot no. the dot ( ? ) on the top surface indicates pin 1. * : the lot number consists of three digits. the first digit represents the last di git of the year of manufacture, and the following two digits indicates the week of manufacture between 01 and either 52 or 53. manufacturing week code (the first week of the year is 01; the last week is 52 or 53.) manufacturing year code (last digit of the year of manufacture) v fb 5 lsg 7 en 6 2 v in2 3 ss 4 gnd l x 8 1 v in1
TCV7103AF 2012-02-28 2 ordering information part number shipping TCV7103AF (te12l, q) embossed tape (3000 units per reel) block diagram pin description pin no. symbol description 1 v in1 input pin for the output section this pin is placed in the standby state if v en = l. standby current is 10 a or less. 2 v in2 input pin for the control section this pin is placed in the standby state if v en = l. standby current is 10 a or less. 3 ss soft-start pin when the ss input is left open, the soft-start time is 1ms (typ.). the soft-start time can be adjusted with an external capacitor. the exte rnal capacitor is charged from a 8 a (typ.) constant-current source, and the reference voltage of the error amplifier is regulated between 0 v and 0.8 v. the external capacitor is discharged when en = l and in case of undervoltage lockout or thermal shutdown. 4 gnd ground pin 5 v fb feedback pin this input is fed into an internal error amplifier with a reference voltage of 0.8v (typ.). 6 en enable pin when en 1.5v (@ v in = 5v), the internal circuitry is a llowed to operate and thus enable the switching operation of the output section. when en 0.5v (@ v in = 5v), the internal circuitry is disabled, putting the TCV7103AF in standby mode. standby current is 10 a or less. this pin has an internal pull-down resistor of approx. 500k . 7 lsg gate drive pin for the low-side switch 8 l x switch pin this pin is connected to high-side p-channel mosfet. control logic current detection v in1 l x lsg + - slope compensation under voltage lockout v in2 constant-current source (8 a) gnd + - phase compensation soft start error amplifier ref. voltage (0.8 v) en v fb ss - short-circuit protection driver oscillato r
TCV7103AF 2012-02-28 3 absolute maximum ratings (ta = 25c) characteristics symbol rating unit input pin voltage for the output section(note 1) v in1 ?0.3 to 7 v input pin voltage for the control section(note 1) v in2 ?0.3 to 7 v soft-start pin voltage(note 1) v ss ?0.3 to 7 v feedback pin voltage(note 1) v fb ?0.3 to 7 v enable pin voltage(note 1) v en ?0.3 to 7 v v en ? v in2 voltage difference v en -v in2 v en ? v in2 < 0.3 v lsg pin voltage(note 1) v lsg ?0.3 to 7 v switch pin voltage(note 2) v lx ?0.3 to 7 v switch pin current i lx ?7.8 a power dissipation(note 3) p d 2.2 w operating junction temperature t jopr ?40 to125 c junction temperature(note 4) t j 150 c storage temperature t stg ?55 to150 c note: using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this pr oduct to decrease in the reliability significantly even if the operating conditions (i.e. operat ing temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. please design the appropriate reliability upon reviewing the toshiba semiconductor reliability handbook (?handling precautions?/?derating concept and methods?) and individual reliability data (i.e. reliability test report and estimated failure rate, etc) note 1: using this product continuously may cause a dec rease in the reliability significantly even if the operating conditions are within the absolute maximum ratings. set each pin voltage less than 5.6v taking into consideration the derating. note 2: the switch pin voltage (v lx ) doesn?t include the peak voltage generated by TCV7103AF?s switching. a negative voltage generated in dead time is permitted among the switch pin current (i lx ). thermal resistance characteristics characteristics symbol max unit thermal resistance, junction to ambient r th (j-a) 44.6 (note 3) c/w thermal resistance, junction to case (tc=25 ) r th (j-c) 4.17 c/w note 3: note 4: the TCV7103AF may enter into thermal shutdown at the rated maximum junction temperature. thermal design is required to ensure that the rated maximum operating junction temperature, t jopr , will not be exceeded. fr-4 25.4 25.4 0.8 (unit: mm) glass epoxy board single-pulse measurement: pulse width t=10(s)
TCV7103AF 2012-02-28 4 electrical characteristics (t j = 25c, v in1 = v in2 = 2.7v to 5.6 v, unless otherwise specified) characteristics symbol test condition min typ. max unit operating input voltage v in (opr) ? 2.7 ? 5.6 v operating current i in v in1 = v in2 = v en = v fb = 5v ? 530 780 a output voltage range v out(opr) v en = v in1 = v in2 0.8 ? ? v i in (stby) 1 v in1 = v in2 = 5v, v en = 0v v fb = 0.8v ? ? 10 standby current i in (stby) 2 v in1 = v in2 = 3.3 v, v en = 0 v v fb = 0.8v ? ? 10 a high-side switch leakage current i leak (h) v in1 = v in2 = 5v, v en = 0v v fb = 0.8v, v lx = 0v ? ? 10 a v ih (en) 1 v in1 = v in2 = 5v 1.5 ? ? v ih (en) 2 v in1 = v in2 = 3.3v 1.5 ? ? v il (en) 1 v in1 = v in2 = 5v ? ? 0.5 en threshold voltage v il (en) 2 v in1 = v in2 = 3.3v ? ? 0.5 v i ih (en) 1 v in1 = v in2 = 5v, v en = 5v 6 ? 13 en input current i ih (en) 2 v in1 = v in2 = 3.3v, v en = 3.3v 4 ? 9 a v fb1 v in1 = v in2 = 5v, v en = 5v tj = 0 to 85 0.792 0.8 0.808 v fb input voltage v fb2 v in1 = v in2 = 3.3v, v en = 3.3v tj = 0 to 85 0.792 0.8 0.808 v v fb input current i fb v in1 = v in2 = 2.7v to 5.6v v fb = v in2 ?1 ? 1 a r ds (on) (h) 1 v in1 = v in2 = 5v, v en = 5v i lx = ?1.5 a ? 0.08 ? high-side switch on-state resistance r ds (on) (h) 2 v in1 = v in2 = 3.3v, v en = 3.3v i lx = ?1.5 a ? 0.1 ? on-state resistance of high-side transistor connected to the lsg pin r lsg (on) (h) v in1 = v in2 = 5v ? 0.9 ? on-state resistance of low-side transistor connected to the lsg pin r lsg (on) (l) v in1 = v in2 = 5v ? 0.6 ? oscillation frequency f osc v in1 = v in2 = v en = 5v 800 1000 1200 khz internal soft-start time t ss v in1 = v in2 = 5v, i out = 0a, measured between 0% and 90% points at v out . 0.5 1 1.5 ms external soft-start charge current i ss v in1 = v in2 = 5v, v en = 5v -5 -8 -11 a high-side switch duty cycle dmax v in1 = v in2 = 2.7v to 5.6 v ? ? 100 % detection temperature t sd v in1 = v in2 = 5v ? 150 ? thermal shutdown (tsd) hysteresis t sd v in1 = v in2 = 5v ? 15 ? c detection voltage v uv v en = v in1 = v in2 2.35 2.45 2.6 recovery voltage v uvr v en = v in1 = v in2 2.45 2.55 2.7 undervoltage lockout (uvlo) hysteresis v uv v en = v in1 = v in2 ? 0.1 ? v i lim1 v in1 = v in2 = 5v, v out = 2v 7.3 8.5 ? l x current limit i lim2 v in1 = v in2 = 3.3v, v out = 2v 6.8 8.0 ? a ocp latch detection voltage v loc v in1 = v in2 = 5v ? 0.3 ? v ocp latch detection time t loc v in1 = v in2 = 5v, v fb = 0.2v ? 2 ? ms
TCV7103AF 2012-02-28 5 note on electrical characteristics the test condition t j = 25c means a state where any drifts in electrical characteristics incurred by an increase in the chip?s junction temperature can be ignored during pulse testing. application circuit examples figure 1 shows a typical application circuit using a low-esr electrolytic or ceramic capacitor for c out . when using the TCV7103AF with an external low-side mosfet: when using the TCV7103AF with an external schottky barrier diode: figure 1 TCV7103AF typical application circuit examples component values (reference value@ v in = 5v, v out = 3.3v, ta = 25c) q1: low-side fet (n-channel mosfet: ssm6k411tu manufactured by toshiba corporation) sbd: low-side schottky barrier diode (schottky barrier diode: cls01 manufactured by toshiba corporation) c in : input filter capacitor = 10 f (ceramic capacitor: grm21bb30j106k manufactured by murata manufacturing co., ltd.) c out : output filter capacitor = 10 f (ceramic capacitor: grm21bb30j106k manufactured by murata manufacturing co., ltd.) c c : decoupling capacitor = 1 f (ceramic capacitor: grm155b30j105k manufactured by murata manufacturing co., ltd.) r fb1 : output voltage setting resistor = 7.5k r fb2 : output voltage setting resistor = 2.4k r s : snubber resistor = 4.7 c s : snubber capacitor = 220pf (ceramic capacitor: grm1552c1h221j manufactured by murata manufacturing co., ltd.) l: inductor = 1 h (vlm10555t-1r2m100-3 or clf7045t-1r0n manufactured by tdk-epc corporation, ds85lcb b1135as-1r0n or dg8040c 1267ay-1r0n manufactured by toko, inc) c ss is a capacitor for adjusting the soft-start time. l q1 TCV7103AF c out c in v fb gnd v in2 ss v in v out gnd gnd lsg en l x v in1 r fb1 r fb2 c c sbd c s r s en c ss TCV7103AF c out v fb gnd v in2 ss v in v out gnd gnd l lsg en l x v in1 r fb1 r fb2 c c c in en c ss
TCV7103AF 2012-02-28 6 examples of component values (for reference only) output voltage setting v out inductance l input capacitance c in output capacitance c out feedback resistor r fb1 feedback resistor r fb2 1.0 v 1 h 10 f 50 f 7.5 k 30 k 1.2 v 1 h 10 f 30 f 7.5 k 15 k 1.51 v 1 h 10 f 30 f 16 k 18 k 1.8 v 1 h 10 f 30 f 15 k 12 k 2.5 v 1 h 10 f 30 f 5.1 k 2.4 k 3.3 v 1 h 10 f 30 f 7.5 k 2.4 k component values need to be adjusted, depending on the TCV7103AF?s i/o conditions and the board layout. application notes inductor selection the inductance required for inductor l can be calculated as follows: in out losc out in v v if vv l ? ? ? = (1) v in : input voltage (v) v out : output voltage (v) f osc : oscillation frequency = 1000khz (typ.) i l : inductor ripple current (a) *: generally, i l should be set to approximately 20% of th e maximum output current. since the maximum output current of the TCV7103AF is 6.5a, i l should be 1.3a or so. the in ductor should have a current rating greater than the peak output current of 7.2a. if the inductor current rating is exceeded, the inductor becomes saturated, leading to an unstable dc-dc converter operation. when v in = 5v and v out = 3.3v, the required inductance can be calculated as follows. be sure to select an appropriate inductor, taking the in put voltage range into account. in out losc out in v v if vv l ? ? ? = v5 v3.3 1.3a 1000khz v3.3v5 ? ? ? = = 0.86 h (2) figure 2 inductor current waveform setting the output voltage a resistive voltage divider is connected as shown in figure 3 to set the output voltage; it is given by equation 3 based on the reference voltage of the error amplifier (0 .8v typ.), which is connect ed to the feedback pin, v fb . r fb1 should be up to 30k or so, because an extremely large-value r fb1 incurs a delay due to parasitic capacitance at the v fb pin. it is recommended that resistors with a precision of 1% or higher be used for r fb1 and r fb2 . ? ? ? ? ? ? ? ? +?= fb2 fb1 fb out r r 1vv ? ? ? ? ? ? ? ? +?= fb2 fb1 r r 1v8.0 (3) figure 3 output voltage setting resistors i l i l osc f 1 t = in out on v v t ?= 0 l x v fb r fb1 r fb2 v out
TCV7103AF 2012-02-28 7 output filter capacitor selection use a low-esr electrolytic or ceramic capacitor as the output filter capacitor. since a capacitor is generally sensitive to temperature, choose one with excellent temperature characteristics. as a rule of thumb, its capacitance should be 30 f or greater for applications. the capacitanc e should be set to an optimal value that meets the system?s ripple voltage requ irement and transien t load response characteristics. the phase margin tends to decrease as the output voltage is getting low. enlarge a capacitance for output flatness when phase margin is insufficient, or the transient load response characteristics cannot be satisfied. since the ceramic capacitor has a very low esr value, it helps reduce the output ripple voltage; however, because the ceramic capacitor provides less phase margin, it should be thoroughly evaluated. rectifier selection a low-side switch or schottky barrier diode shou ld be externally connected to the TCV7103AF. it is recommended that an n-channel mosfet ssm6k411 tu or equivalent be on as a low-side switch. an n-channel mosfet of a different type can also be us ed. however, if the switching speed of the external mosfet is low, a shoot-through current may flow due to the simultaneous conduction of high-side and low-side switches, leading to device failure. thus, observe the waveform at the l x pin while operating the TCV7103AF with a current close to the rated value to make sure that there is a dead time (the period between the time when the low-side switch is turned off and th e high-side switch is turned on) of mo re than 10ns. thorou gh evaluation is required to ensure that the tcv7103 af provides an appropriate dead ti me even when in the end-product environment. as for the schottky barrier diode, the cls01 is recomme nded to be used. using a schottky barrier diode tends to lead to a large voltage overshoot on the l x pin. thus, a series rc filter consisting of a resistor of r s = 4.7 and a capacitor of c s = 220pf should be connected in parallel with the schottky barrier diode. power loss of a schottky barrier diode tends to increase due to an incr eased reverse current caused by the rise in ambient temperature and self-heating due to a supplied current. th e rated current should therefore be derated to allow for such conditions in selecting an appropriate diode. soft-start feature the TCV7103AF has a soft-start feature. if the ss pin is left open, the soft-start time, t ss , for v out defaults to 1ms (typ.) internally. the soft-start time can be extended by adding an external capacitor (c ss ) between the ss and gnd pins. the soft-start time can be calculated as follows: ss ss2 c1.0t ?= (4) t ss2 : soft-start time (in seconds) when an external capacitor is connected between ss and gnd. c ss : capacitor value ( f) the soft-start feature is activated when the tcv71 03af exits the undervoltage lockout (uvlo) state after power-up and when the voltage at the en pi n has changed from logic low to logic high.
TCV7103AF 2012-02-28 8 overcurrent protection ocp TCV7103AF has an overcurrent pr otection with latch function . when a peak current of l x pin exceeds a i lim = 8.5a (typ.)@ v in = 5v, on time of high-side switch (internal) is limited. when ocp is in operation, and v fb input voltage drops below latch detection voltage v loc = 0.3v (typ.) for more than latch detection time t loc = 2ms (typ.), TCV7103AF will halt the output voltage and this state is latched. when the en pin level changes from high to low, or the input voltage becomes under v uv =2.45v (typ.), releases the latch. while soft-start feature is in operation, ocp does not operate. in the condition with low input voltage, the current limitation value tends to decrease. in the condition of less than v in =3.8v, please use it below output current i out =6.0a (max). figure 4 overcurrent protection operation undervoltage lockout (uvlo) the TCV7103AF has undervoltage lock out (uvlo) protection circuitry. the TCV7103AF does not provide output voltage (v out ) until the input voltage (v in2 ) has reached v uvr = 2.55 v (typ.). uvlo has hysteresis of 0.1 v (typ.). after the switch turns on, if v in2 drops below v uv = 2.45 v (typ.), uvlo shuts off the switch at v out . figure 5 undervoltage lockout operation soft start v in2 hysteresis: v uv undervoltage lockout detection voltage v uv switching operation stops gnd v out gnd undervoltage lockout recovery voltage v uvr switching operation starts i lx (peak) v loc =0.3v (typ.) i lim =8.5a (typ.) overcurrent period t loc =2ms(typ.) output voltage stop v fb =0.8v (typ.) v fb
TCV7103AF 2012-02-28 9 thermal shutdown (tsd) the TCV7103AF provides thermal shut down. when the junction temperature continues to rise and reaches tsd = 150c (typ.), the TCV7103AF goes into thermal shutdown and shuts off the power supply. tsd has a hysteresis of about 15c (typ.). the device is enabled again when the junction temperature has dropped by approximately 15c from the tsd trip po int. the device resumes the power su pply when the soft-start circuit is activated upon recovery from tsd state. thermal shutdown is intended to protect the device ag ainst abnormal system conditio ns. it should be ensured that the tsd circuit will not be activated during normal operation of the system. figure 6 thermal shutdown operation usage precautions ? the input voltage, output voltage, output current and temperature condit ions should be considered when selecting capacitors, inductors and resistors. these co mponents should be evalua ted on an actual system prototype for best selection. ? parts of this product in the surrounding are examples of the representative, and the supply might become impossible. please confirm late st information when using it. ? external components such as capacitors, inductors and re sistors should be placed as close to the TCV7103AF as possible. ? the TCV7103AF has an esd diode between the en and v in2 pins. the voltage between these pins should satisfy v en ? v in2 < 0.3v. ? add a decoupling capacitor (c c ) of 0.1 f to 1 f between the gnd and v in2 pins. to achieve stable operation, also insert a resistor of about 100 between the v in2 and v in1 pins to reduce the ripple voltage at the v in2 pin. ? the minimum programmable output voltage is 0.8v (typ .). if the difference betw een the input and output voltages is small, the output voltage might not be regulated accurately and fluctuate significantly. ? gnd pin is connected with the back of ic chip and serves as the heat radiation pin. secure the area of a gnd pattern as large as possible fo r greater of heat radiation. ? the overcurrent protection circuits in the product are designed to temp orarily protect product from minor overcurrent of brief du ration. when the overcurrent protective func tion in the product activates, immediately cease application of overcurrent to prod uct. improper usage of product, such as application of current to product exceeding the absolute maximum ratings, could cause the overcurrent protecti on circuit not to operate properly and/or damage product permanently even before the protection circuit starts to operate. ? the thermal shutdown circuits in the product are designed to temporarily protect product from minor overheating of brief duration. when th e overheating protective function in the product activates, immediately correct the overheating situation. im proper usage of product, such as the application of heat to product exceeding the absolute maximum ratings, could cause the overheating protecti on circuit not to operate properly and/or damage product permanently even before the protection circuit starts to operate. soft start tsd detection temperature: t sd gnd switching operation stops recovery from tsd switching operation starts v out 0 t j hysteresis: t sd
TCV7103AF 2012-02-28 10 typical performance characteristics v en = v in = 3.3 v v fb = v in 200 400 800 0 600 v in = 5.6v t j = 25c 0 2 4 6 5 3 1 8 20 0 16 12 4 v in = 3.3 v v ih(en) v il(en) -50 -25 0 25 50 75 125 100 i ih(en) ? v en junction temperature t j (c) en input voltage v en (v) en threshold voltage v ih(en) , v il(en) (v) en input current i ih(en) ( a) 1 2 0 1.5 0.5 v in = 5 v v ih(en) v il(en) -50 -25 0 25 50 75 100 125 junction temperature t j (c) operating current i in ( a) operating current i in ( a) i in ? t j v ih(en) , v il(en) ? t j junction temperature t j (c) junction temperature t j (c) en threshold voltage v ih(en) , v il(en) (v) 1 2 0 1.5 0.5 0 2 4 6 200 400 800 0 v en = v fb = v in t j = 25c 600 v en = v in = 5 v v fb = v in -50 0 25 50 100 125 -25 75 200 400 800 0 600 ? 50 ? 25 0 25 50 125 100 i in ? v in i in ? t j v ih(en) , v il(en) ? t j operating current i in ( a) 75 input voltage v in (v)
TCV7103AF 2012-02-28 11 under voltage lockout voltagev uv ,v uvr (v) 2 4 5 6 0.8 0.82 0.78 v en = v in v out = 1.2 v t j = 25c 4 8 12 20 0 16 v in = 5 v v en = 5 v -50 -25 0 50 75 100 125 25 2.7 2.2 2.4 2.3 2.5 2.6 0 2 1.5 0.5 1 -50 -25 0 25 50 75 100 125 2.6 2.3 2.5 2.4 v en = v in v in = 5 v v out = 1.2 v v en = v in -50 0 25 50 75 100 125 -25 0.8 0.82 0.78 0.79 0.81 i ih(en) ? t j v uv , v uvr ? t j junction temperature t j (c) junction temperature t j (c) en input current i ih(en) ( a) v out ? v in v fb ? v in input voltage v in (v) input voltage v in (v) output voltage v out (v) v fb input voltage v fb (v) v fb ? t j junction temperature t j (c) v fb input voltage v fb (v) 0.79 0.81 v out ? v in input voltage v in (v) output voltage v out (mv) 2 3 4 5 6 v out = 1.2 v , i out = 10 ma l = 1.0 h , c out = 10 f 3 ta = 25c 0 20 10 -20 -30 -10 30 recovery voltage v uvr detection voltage v uv v en = v in v out = 1.2 v t j = 25c 3
TCV7103AF 2012-02-28 12 2 3 4 5 6 t j = 25c 1100 1200 v in = 5 v t j = 25c 2 3 4 5 6 v in = 3.3 v v in = 5 v -50 -25 0 25 50 75 100 125 f osc ? v in input voltage v in (v) junction temperature t j (c) oscillation frequency f osc (khz) oscillation frequency f osc (khz) i ss ? v in i ss ? t j input voltage v in (v) junction temperature t j (c) external soft-start charge current i ss ( a) external soft-start charge current i ss ( a) i ss ? t j junction temperature t j (c) external soft-start charge current i ss ( a) -12 -10 -8 -6 -4 -2 0 -12 -10 -8 -6 -4 -2 0 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 -12 -10 -8 -6 -4 -2 0 1000 900 800 f osc ? t j 1100 1200 1000 900 800
TCV7103AF 2012-02-28 13 ? i out v in = 5 v , v out = 3.3 v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu 0 30 -30 20 10 -10 -20 0 30 10 -20 -30 v in = 5 v , v out = 1.2 v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu -10 20 v in = 3.3 v , v out = 1.2 v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu v out ? i out 0 20 10 -20 -30 -10 30 v out ? i out v out ? i out v in = 5 v , v out = 3.3v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu ? i out output current i out (a) efficiency (%) 50 90 60 100 80 70 v in = 5 v , v out = 1.2v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu output current i out (a) efficiency (%) v in = 3.3 v , v out = 1.2v l = 1.0 h , c out = 10 f 3 ta = 25c , ssm6k411tu ? i out output current i out (a) efficiency (%) 50 90 60 100 80 70 50 90 60 100 80 70 output current i out (a) output voltage v out (mv) output voltage v out (mv) output current i out (a) output current i out (a) output voltage v out (mv) 0 1 4 2 3 5 6 7 0 1 4 2 3 5 6 7 0 1 4 2 3 5 6 7 0 1 4 2 3 5 6 7 0 1 4 2 3 5 6 7 0 1 4 2 3 5 6 7
TCV7103AF 2012-02-28 14 output current i out (a) overcurrent protection 0 3 2 4 1 overcurrent protection output current i out (a) output voltage v out (v) v in = 3.3v , v out = 1.2 v l = 1 h , c out = 10 f 3 ta = 25c , ssm6k411tu output voltage v out (v) output current i out (a) 4 5 7 6 8 9 v in = 5v , v out = 3.3v l = 1 h , c out = 10 f 3 ta = 25c , ssm6k411tu 5 4 5 7 6 8 9 0 1.5 1 2 0.5 overcurrent protection 0 1.5 1 2 0.5 output voltage v out (v) v in = 5v , v out = 1.2v l = 1 h , c out = 10 f 3 ta = 25c , ssm6k411tu 4 5 7 6 8 9 ? i out v in = 5 v , v out = 3.3v l = 1.0 h , c out = 10 f 3 ta = 25c , cls01 output current i out (a) efficiency (%) 50 90 60 100 80 70 0 1 4 2 3 5 6 7
TCV7103AF 2012-02-28 15 startup characteristics (internal soft-start time) startup characteristics (c ss = 0.1 f) 200 s/div 2 ms/div load response characteristics load response characteristics 100 s/div 100 s/div v in = 5 v v out = 3.3 v ta = 25c l = 1 h c out = 10 f 3 output current i out : (10ma 5a 10ma) output voltage v out (200 mv/div) v in = 5 v , v out = 1.2 v , ta = 25c l = 1 h , c out = 10 f 3 ssm6k411tu en voltage:v en :l h output current i out : (10ma 5a 10ma) output voltage v out (100 mv/div) v in = 5 v v out = 3.3 v ta = 25c l = 1 h c out = 10 f 3 output voltage: v out (1v/div) v in = 5 v , v out = 3.3 v , ta = 25c l = 1 h , c out = 10 f 3 ssm6k411tu en voltage:v en :l h output voltage: v out (1v/div)
TCV7103AF 2012-02-28 16 package dimensions hson8-p-0505-1.27 unit: mm weight: 0.068 g (typ.)
TCV7103AF 2012-02-28 17 restrictions on product use ? toshiba corporation, and its subsidiaries and affiliates (collect ively ?toshiba?), reserve the right to make changes to the in formation in this document, and related hardware, software and systems (collectively ?product?) without notice. ? this document and any information herein may not be reproduced without prior written permission from toshiba. even with toshiba?s written permission, reproduction is permissibl e only if reproduction is without alteration/omission. ? though toshiba works continually to improve product?s quality and reliability, product can malfunction or fail. customers are responsible for complying with safety standards and for providi ng adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situat ions in which a malfunction or failure of product could cause loss of human life, b odily injury or damage to property, including data loss or corruption. before customers use the product, create designs including the product, or incorporate the product into their own applications, customers mu st also refer to and comply with (a) the latest versions of all relevant toshiba information, including wi thout limitation, this document, the specif ications, the data sheets and application notes for product and the precautions and conditions set forth in the ?toshiba semiconductor reliability handbook? an d (b) the instructio ns for the application with which the product will be used with or for. customers are solely responsible for all aspects of their own product design or applications, including but not limit ed to (a) determining the appropriateness of the use of this product in such design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, dia grams, programs, algorithms, sample application circ uits, or any other referenced documents; and (c) validating all operating paramete rs for such designs and applications. toshiba assumes no liability for customers? product design or applications. ? product is intended for use in general electronics applications (e.g., computers, pe rsonal equipment, office equipment, measur ing equipment, industrial robots and home elec tronics appliances) or for specif ic applications as expressly stated in this document . product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality a nd/or reliability and/or a malfunction or failure of which may cause loss of human life, bod ily injury, serious property damage or se rious public impact (?unintended use?). unintended use includes, without limit ation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automo biles, trains, ships and other transportation, traffic signalin g equipment, equipment used to control combustions or explosions, safety devices, elevat ors and escalators, devices related to el ectric power, and equipment used in finance-relate d fields. do not use product for unintended use unless specifically permitted in thi s document. ? do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy product, whether in whole or in part. ? product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable laws or regulations. ? the information contained herein is presented only as guidance for product use. no re sponsibility is assumed by toshiba for an y infringement of patents or any other intellectual property rights of third parties that may result from the use of product. no license to any intellectual property right is granted by this documen t, whether express or implied, by estoppel or otherwise. ? absent a written signed agreement, except as provid ed in the relevant terms and conditions of sale for product, and to the maximum extent allowable by law, toshiba (1) assumes no liability whatsoever, including without limitation, indirect, co nsequential, special, or incidental damages or loss, including without limitation, loss of profit s, loss of opportunities, business interruption and loss of data, and (2) disclaims any and all express or implied warranties and conditions related to sale, use of product, or information, including warranties or conditions of merchantability, fitness for a particular purpose, accuracy of information, or noninfringement. ? do not use or otherwise make available product or related soft ware or technology for any milit ary purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technolog y products (mass destruction weapons). product and related software and technology may be controlled under the japanese foreign exchange and foreign trade law and the u.s. export administration regulations. export and re-export of product or related softw are or technology are strictly prohibited except in comp liance with all applicable export laws and regulations. ? please contact your toshiba sales representative for details as to environmental matters such as the rohs compatibility of pro duct. please use product in compliance with all ap plicable laws and regulations that regulate the inclusion or use of controlled subs tances, including without limitation, the eu rohs directive. toshiba a ssumes no liability for damages or losses occurring as a result o f noncompliance with applicable laws and regulations.

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