View TB7110F_4721753.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

TB7110F 2011-05-19 1 toshiba bicd integrated circuit silicon monolithic TB7110F buck dc-dc converter ic ? series regulator ic the TB7110F is single chip power supply ics that integrated buck dc-dc converter section utilizing a ch opper circuit and series regulator section. the TB7110F contains high-speed p-channel mosfets for the high side main switch to achieve high efficiency. and series regulator section is fed into a overcurrent circuit of fold buck type, and it protects this product from the short circuit state of the load. features ? output current: dc-dc converter section i out1 = 1.5a(max.) series regulator section i out2 = 800ma(max.) ? high efficiency: dc-dc converter section = 86% (typ.) (@v in1 = 24v, v out1 = 5v, i out1 = 500ma) ? operating input voltage range: v in1 = 4.5v to 27v ? on-state resistance: r ds(on) = 0.7 ? (high-side) typical (@v in1 = 24v, tj = 25 ) ? oscillation frequency: f osc = 500khz (typ.) ? reference voltage: v ref = 1.215v 2.9% (@tj = 25c) ? housed in a small surface-mount package (sop advance) with a low thermal resistance ? soft-start feature ? overcurrent protection: fold buck ty pe for the series regulator section i lmit2(1) = 1.2a(typ.)(@ v in2 = 6v, v out2 = 4.5v), i lmit2(2) = 200ma(typ.)(@ v in2 = 6v, v out2 = 0v) 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-te rm 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 prod uct, and (2) to shut down or otherwis e 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) lot no. the dot ( ? ) on the top surface indicates pin 1. tb 7110f 2 v in1 3 v in2 4 gnd 1 lx v out2 5 en 7 v fb1 8 v fb2 6 the lot number consists of three digi ts. the first digit represents the last digit 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)
TB7110F 2011-05-19 2 ordering information part number shipping TB7110F (te12l, q) embossed tape (3000 units per reel) block diagram pin description pin no. symbol description 1 l x switch pin this pin is connected to high-side p-channel mosfet. 2 v in1 input pin this pin is placed in the standby state if v en =?l?. standby current is 70 a(@v in = 24v) or less. 3 v in2 input pin for the series regulator section. it uses on the condition of v in1 R v in2 . 4 gnd ground pin 5 v out2 output pin for the series regulator section 6 v fb2 feedback pin for the series regulator section this input is fed into an internal error amplifier with a reference voltage of 1.215 v (typ.). 7 en enable pin when v en 1.8v (@ v in1 = 24v), the internal circuitry is allowed to operate and thus enable the switching operation of the output section. when v en 0.5v (@ v in1 = 24v), the internal circuitry is disabled, putting the TB7110F in standby mode. this pin has an internal pull-up current of 3.5a(typ.). 8 v fb1 feedback pin for the dc-dc converter section this input is fed into an internal error amplifier with a reference voltage of 1.215 v (typ.). control logic current detection v in1 l x + - slope com p ensation under voltage lockout + - phase compensation soft start error amplifie r ref.voltage (1.215v) en short-circuit protection driver oscillator + - current detection + - error amplifie r v in2 v out2 v fb2 v fb1 gnd -
TB7110F 2011-05-19 3 absolute maximum ratings (ta = 25c) (note) characteristics symbol rating unit input pin voltage v in1 -0.3 to 30 v input pin voltage v in2 -0.3 to 30 v switch pin voltage (note 1) v lx -0.3 to 30 v feedback1 pin voltage v fb1 -0.3 to 30 v feedback2 pin voltage v fb2 -0.3 to 30 v enable pin voltage v en -0.3 to 30 v switch pin current i lx -1.8 a output pin current i out2 -0.8 a power dissipation (note 2) p d 2.2 w operating junction temperature tjopr -40 to 125 junction temperature (note 3) t j 150 c storage temperature t stg -55 to 150 c thermal resistance characteristics characteristics symbol max unit thermal resistance, junction to ambient r th (j-a) 44.6 (note 2) c/w thermal resistance, junction to case (tc=25) r th (j-c) 4.17 c/w note: using continuously under heavy loads (e.g. the a pplication of high temperature/current/voltage and the significant change in temperature, et c.) may cause this product to decreas e 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: the switch pin voltage (v lx ) doesn?t include the peak voltage generated by TB7110F?s switching. a negative voltage generated in dead time is permitted among the switch pin current (i lx ). note 2: note 3: the TB7110F may go into thermal shutdown at t he rated maximum junction temperature. thermal design is required to ensure that the rated maximu m operating junction temperature, t jopr , will not be exceeded. sin g le-pulse measurement: p ulse width t=10 ( s ) fr-4 25.4 25.4 0.8 (unit: mm) glass epoxy board
TB7110F 2011-05-19 4 electrical characteristics (t j = 25c, v in1 = v in2 = 4.5v to 27v, unless otherwise specified) characteristics symbol test condition min typ. max unit operating input voltage v in1(opr) ? 4.5 ? 27 v operating current i in1 v in1 = 24v , v en = 5v v fb1 = 2v ? ? 5 ma standby current i in1(stby) v in1 = 24v , v en = 0v v fb1 = 0.8v ? ? 70 a v ih(en) v in1 = 24v 1.8 ? ? en threshold voltage v il(en) v in1 = 24v ? ? 0.5 v i ih(en) v in1 = 24v, v en = 5v ?5 ? 5 en input current i il(en) v in1 = 24v, v en = 0v ? ?3.5 ? a detection temperature t sd v in1 = 24v , v en = 5v ? 155 ? c thermal shutdown (tsd) hysteresis t sd v in1 = 24v , v en = 5v ? 10 ? c detection voltage v uv v en = 5v 3.2 3.7 4.2 v recovery voltage v uvr v en = 5v 3.5 4.0 4.5 v undervoltage lockout (uvlo) hysteresis v uv v en = 5v ? 0.3 ? v internal soft-start time t ss v in1 = 24v , v en = 5v, i out1 = 0a measured between 0% and 90% points at v out1 1.2 2.5 4 ms reference voltage v ref v in1 = 24v , v en = 5v 1.18 1.215 1.25 v dc-dc converter section v fb input voltage v fb1 v in1 = 24v , v en = 5v ? 1.215 ? v v fb input current i fb1 v in1 = 24v , v en = 5v v fb1 = 2v -1 ? 1 a output voltage range v out1(opr) v en = v in1 1.215 ? v in1 -3 v high-side switch leakage current i leak (h) v in1 = 24v, v en = 0v v fb1 = 0.8v, v lx = 0v ? ? 10 a high-side switch on-state resistance r ds(on)(h) v in1 = 24v , v en = 5v i lx = - 0.1a ? 0.7 ? oscillation frequency f osc v in1 = 24v , v en = 5v 400 500 600 khz high-side switch duty cycle dmax v in1 = 24v , v en = 5v ? ? 100 % l x current limit i lim1 v in1 = 24v , v en = 5v v out1 = 5v 1.8 3 ? a series regulator section v fb input voltage v fb2 v in1 = 24v , v en = 5v ? 1.215 ? v v fb input current i fb2 v in1 = 24v , v in2 = 6v v fb2 = 2v, v en = 5v -5 ? -5 a load regulation reg ? load v in1 = 24v, v in2 = 6v, v out2 = 5v i out2 = 5ma to 800ma ? ? 50 mv i lim2(1) v in1 = 24v , v in2 = 6v v fb2 = 1v , v out2 = 4.5v 0.8 1.2 ? a v out2 current limit i lim2(2) v in1 = 24v , v in2 = 6v v fb2 = 0v , v out2 = 0v ? 200 ? ma
TB7110F 2011-05-19 5 application circuit example 1 ? dc-dc converter series regulator component values (reference value@ v in1 = 24v, v out1 = 5v, v out2 = 3.3v, ta = 25c) c in : v in1 input filter capacitor = 4.7 f (ceramic capacitor: grm31cr71h475ka12l manufactured by murata manufacturing co., ltd.) c out1 : v out1 output filter capacitor = 22 f (ceramic capacitor: grm31cb31c226me15l manufactured by murata manufacturing co., ltd.) c out2 : v out2 output capacitor = 4.7 f (ceramic capacitor: grm31cr71h475ka12l manufactured by murata manufacturing co., ltd.) r fb1 : output voltage setting resistor for the dc-dc converter section = 4.7k r fb2 : output voltage setting resistor for the dc-dc converter section = 1.5k r fb3 : output voltage setting resistor for the series regulator section = 4.7k r fb4 : output voltage setting resistor for the series regulator section = 2.7k l : inductor = 15 h(clf7045t-150m manufactured by tdk-epc corporation) sbd : schottky barrier diode(crs20i40b manufactured by toshiba corporation) application circuit example 2 ? dc-dc converter component values (reference value@ v in1 = 24v, v out1 = 5v, ta = 25c) c in : v in1 input filter capacitor = 4.7 f (ceramic capacitor: grm31cr71h475ka12l manufactured by murata manufacturing co., ltd.) c out1 : v out1 output filter capacitor = 22 f (ceramic capacitor: grm31cb31c226me15l manufactured by murata manufacturing co., ltd.) r fb1 : output voltage setting resistor for the dc-dc converter section = 4.7k r fb2 : output voltage setting resistor for the dc-dc converter section = 1.5k l : inductor = 15 h(clf7045t-150m manufactured by tdk-epc corporation) sbd : schottky barrier diode(crs20i40b manufactured by toshiba corporation) figure 1 TB7110F application circuit examples TB7110F v fb2 gnd v in v out2 gnd gnd en v in1 sbd en l x l v fb1 v in2 v out2 TB7110F v fb2 gnd v in v out1 gnd gnd en v in1 sbd en l x l v fb1 v in2 v out1 r fb1 r fb2 r fb3 r fb4 c out2 c out1 c in v out2 r fb1 r fb2 c out1 c in
TB7110F 2011-05-19 6 application notes dc-dc converter section inductor selection the inductance required for inductor l can be calculated as follows: in1 out1 losc out1 in1 v v if vv l ? ? ? = (1) v in1 : input voltage (v) v out1 : output voltage (v) f osc : oscillation frequency = 500khz (typ.) i l : inductor ripple current (a) * : generally, i l should be set to approximately 30% of th e maximum output current. since the maximum output current of th e TB7110F is 1.5a, i l should be 0.5a or so. the induct or should have a current rating greater than the peak output current of 1.75a. if th e inductor current rating is exceeded, the inductor becomes saturated, leading to an unstable dc-dc converter operation. when v in1 = 24v and v out1 = 5v, the required inductance can be calculated as follows. be sure to select an appropriate inductor, taking the in put voltage range into account. in1 out1 losc out1 in1 v v if vv l ? ? ? = v24 v5 0.5a 500khz v524v ? ? ? = = 15.8 h 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 2 based on the refere nce voltage of the error amplifier (1.215v typ.), which is conne cted to the feedback pin, v fb . r fb2 should be up to 10k or so, because an extremely large-value r fb2 incurs a delay due to parasitic capacitance at the v fb1 pin. it is recommended that resistors with a precision of 1% or higher be used for r fb1 and r fb2 . ? ? ? ? ? ? ? ? += fb2 fb1 fb1 out1 r r 1vv ? ? ? ? ? ? ? ? += fb2 fb1 r r 1v215.1 (2) figure 3 output voltage setting resistors 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 wi th excellent temperature characterist ics. the capacitance should be set to an optimal value that meets the system?s ripple voltage requirement and tr ansient load response characteristics. rectifier selection a schottky barrier diode should be externally conne cted to the TB7110F as a rectifier between the l x and gnd pins. it is recommended crs20i40b or equivalent be used as the schottk y barrier diode. if a large voltage overshoot is on the l x pin, it reduces the voltage to connect a seri es cr network consisting of a resistor of r s = 47 and a capacitor of c s = 330pf with the schottky barrier diode in parallel. power loss of the schottky barrier diode tends to increase due to an increased reve rse current caused by the ri se in ambient temperature and self-heating due to a supplied current. the rated current should therefore be derated to allow for such conditions in selecting an appropriate diode. l x v fb1 r fb1 r fb2 v out1 i l i l osc f 1 t = in1 out1 on v v tt ?= 0
TB7110F 2011-05-19 7 overcurrent protection ocp the TB7110F has built-in overcurrent protection with pulse skip. when the peak current of l x pin exceeds i lim1 =3.0a(typ.)(@v in1 =24v), the on time of the high-side switch (internal) will be limited. switching frequency will be reduced and output current will be restricted further if output voltage falls and the voltage of v fb1 pin drops below the overcurrent pulse skip detection voltage v loc (0.5v typ.) during ov ercurrent protection . series regulator section overcurrent protection ocp TB7110F is fed into a overcurrent circuit of fold buck ty pe, and it protects this pr oduct from the overcurrent state of the load. figure 4 overcurrent protection operation setting the output voltage a resistive voltage divider is connected as shown in figure 5 to set the output voltage; it is given by equation 3 based on the reference voltage of the error amplifier (1.215v typ.), which is conne cted to the feedback pin, v fb2 . r fb4 should be up to 10k or so, because an extremely large-value r fb4 incurs a delay due to parasitic capacitance at the v fb2 pin. it is recommended that resistors with a precision of 1% or higher be used for r fb3 and r fb4 . please make a set voltage of v out2 v in1 - 3v or less. ? ? ? ? ? ? ? ? += fb4 fb3 fb2 out2 r r 1vv ? ? ? ? ? ? ? ? ? ? += fb4 fb3 r r 1v215.1 (3) figure 5 output voltage setting resistors output filter capacitor selection use a ceramic capacitor as the output filter capacitor. as a rule of thumb, its capacitance should be 4.7 f or greater. since a capacitor is gene rally sensitive to temperature, ch oose one with excellent temperature characteristics. the ic may oscillate due to external conditions (outpu t current, or temperature etc.). the type of capacitor required must be determined by the ac tual application circuit in which the ic is used. v out2 v fb2 r fb3 r fb4 i out2 i lim2(1) 1.2a(typ) v out2 5v 4.5v i lim2(2) 200ma ( t yp ) 0
TB7110F 2011-05-19 8 dropout voltage if the voltage difference becomes small between input pin (v in2 ) and output pin (v out2 ) of the series regulator section, the output voltage might decrease and th e load regulation characteristics deteriorate. if you obtain an excellent load regulation ch aracteristic, please you use the condit ion of becoming a potential difference that is bigger than the dropout voltage shown in figure 6. figure 6 dropout voltage output current i out2 (a) 0 0.5 1.0 1.5 2.5 0.2 0.4 0.6 i out2 ? (v in2 - v out2 ) 0 0.8 tj=25 c tj=125 c 1.0 2.0 dropout voltage v in2 - v out2 (v)
TB7110F 2011-05-19 9 note on electrical characteristics soft-start feature the TB7110F has a soft-start fe ature. the soft-start time, t ss for v out1 and v out2 defaults to 2.5ms (typ.) internally. the soft-start feature is activated when the TB7110F 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. thermal shutdown (tsd) the TB7110F provides thermal shutdo wn. when the junction temperature continues to rise and reaches t sd (155c typ.), the TB7110F goes into thermal shutdown an d shuts off the power supply. tsd has a hysteresis of about 10c (typ.). the device is enabled again when th e junction temperature has dropped by approximately 10c from the tsd trip point. the device resumes the powe r supply 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 7 thermal shutdown operation undervoltage lockout (uvlo) the TB7110F has undervoltage lockout (uvlo) protection circuitry. the TB7110F does not provide output voltage (v out1 and v out2 ) until the input voltage (v in1 ) has reached v uvr (4.0v typ.). uvlo has hysteresis of 0.3v (typ.). after th e switch turns on, if v in1 drops below v uv (3.7v typ.), uvlo shuts off the switch at v out1 and v out2 . figure 8 undervoltage lockout operation soft start tsd detection temperature: t sd gnd switching operation stops recovery from t sd switching operation starts v out1 v out2 0 t j hysteresis: t sd soft start v in1 hysteresis: v uv undervoltage lockout detection voltage v uv switching operation stops gnd gnd undervoltage lockout recovery voltage v uvr switching operation starts v out1 v out2
TB7110F 2011-05-19 10 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 surro unding are examples of the represen tative, 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 TB7110F as possible. ? c in should be connected as close to the gnd and v in1 pins as possible. operation might become unstable due to a board layout and a characteristics of capacitance. ? the minimum programmable output voltage is 1.215v (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(4) pin is connected with the back of ic chip and serv es 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 duration. when the overcurrent prot ective function in the prod uct 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.
TB7110F 2011-05-19 11 typical performance characteristics undervoltage lockout voltage v uv ,v uvr (v) 0 5 15 25 1 1.5 2.0 0 v in1 = 24v v fb1 = 0v i in1 ? v in1 input voltage v in1 (v) v en = v in1 v fb1 = 2v, v fb2 = 0v t j = 25c 0.5 operating current i in1 (ma) 0 15 20 10 5 -4 -6 0 -2 i ih(en) ? v en en input voltage v en (v) en input current i ih(en) ( a) v in1 = v in2 = 24v v fb1 = v fb2 = 0v t j = 25c 10 20 30 2 25 30 v in1 = v in2 v en = v in1 v fb1 = 0v v fb2 = v out2 t j = 25c 5 3 3.8 4.6 input voltage v in1 (v) v out2 ? v in1 0.6 1.2 0 0.3 0.9 1.5 3.4 4.2 0 25 50 75 100 125 -25 junction temperature t j (c) -50 0 25 50 75 100 125 -25 junction temperature t j (c) 4.0 4.5 3.0 3.5 5.0 recovery voltage v uvr detection voltage v uv v uv , v uvr ? t j 1 1.5 2.0 0 0.5 v ih(en) , v il(en) ? t j v ih(en) v il(en) v en = v in1 = 24v v fb1 = 0v -50 0 25 50 75 125 -25 junction temperature t j (c) 1 1.5 2.0 0 0.5 operating current i in1 (ma) v en = v in1 = 24v v fb1 = v fb2 = 0v i in1 ? t j 100 en threshold voltage v ih(en) , v il(en) (v) output voltage v out2 (v) -50
TB7110F 2011-05-19 12 0 5 20 25 30 1.20 1.28 1.16 v in1 = v in2 v en = v in1 t j = 25c v fb2 ? v in1 input voltage v in1 (v) 1.18 1.26 15 feedback pin voltage v fb2 (v) 1.22 1.24 v in1 = v in2 = 24v v en = v in1 -50 0 25 50 75 100 -25 1.22 1.28 1.16 junction temperature t j (c) feedback pin voltage v fb2 (v) 1.20 1.24 1.26 v fb2 ? t j t j = 25c v in1 = 24v 0 5 20 25 30 input voltage v in1 (v) junction temperature t j (c) oscillation frequency f osc (khz) oscillation frequency f osc (khz) f osc ? t j 560 480 400 520 480 560 400 520 440 15 -50 -25 0 25 50 75 100 125 f osc ? v in1 10 10 440 1.18 125
TB7110F 2011-05-19 13 overcurrent protection (dc-dc converter section) 0 3 2 4 v in1 = 8v v out1 = 5v l = 15 h ta = 25c 1 output current i out1 (a) 2 3 4 0 output voltage v out1 (v) 5 6 1 overcurrent protection ( dc-dc converter section ) 0 3 2 4 v in1 = 24v v out1 = 5v l = 15 h ta = 25c 1 output current i out1 (a) 2 3 4 0 output voltage v out1 (v) 5 6 1 overcurrent protection (dc-dc converter section) 0 3 2 4 v in1 = 8v v out1 = 3.3v l = 15 h ta = 25c 1 output current i out1 (a) 2 3 4 0 output voltage v out1 (v) 5 6 1 overcurrent protection (dc-dc converter section) 0 3 2 4 v in1 = 24v v out1 = 3.3v l = 15 h ta = 25c 1 output current i out1 (a) 2 3 4 0 output voltage v out1 (v) 5 6 1 output voltage v out1 (v) overcurrent protection (dc-dc converter section) 0 3 2 4 v in1 = 12v v out1 = 3.3v l = 15 h ta = 25c 1 output current i out1 (a) 2 3 4 output voltage v out1 (v) 5 6 1 0 overcurrent protection (dc-dc converter section) 0 3 2 4 1 output current i out1 (a) 2 3 4 5 6 1 0 v in1 = 12v v out1 = 5v l = 15 h ta = 25c
TB7110F 2011-05-19 14 v in1 = 8v , v out1 = 5v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b 0 100 -100 50 output current i out1 (a) output voltage v out1 (mv) 0 0.9 0.3 1.2 1.5 -50 0.6 v in1 = 24v , v out1 = 5v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b output current i out1 (a) v out1 ? i out1 (dc-dc converter section) output voltage v out1 (mv) 0 0 100 -100 50 -50 0.9 0.3 1.2 1.5 0.6 v in1 =8v , v out1 = 3.3v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b output current i out1 (a) v out1 ? i out1 (dc-dc converter section) output voltage v out1 (mv) 0 0 100 -100 50 -50 0.9 0.3 1.2 1.5 0.6 output current i out1 (a) output voltage v out1 (mv) 0 100 -100 50 -50 0 0.9 0.3 1.2 1.5 0.6 v out1 ? i out1 (dc-dc converter section) v in1 =24v , v out1 = 3.3v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b v out1 ? i out1 (dc-dc converter section) v in1 = 12v , v out1 = 5v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b 0 100 -100 50 output current i out1 (a) output voltage v out1 (mv) 0 0.9 0.3 1.2 1.5 -50 0.6 output current i out1 (a) output voltage v out1 (mv) 0 100 -100 50 -50 0 0.9 0.3 1.2 1.5 0.6 v out1 ? i out1 (dc-dc converter section) v in1 =12v , v out1 = 3.3v l = 15 h , c out1 = 22 f ta = 25c , ls : crs20i40b v out1 ? i out1 (dc-dc converter section)
TB7110F 2011-05-19 15 v in1 = 8v v out1 = 5v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b ? i out1 output current i out1 (a) efficiency (%) 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 v in1 = 24v v out1 = 5v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b ? i out1 output current i out1 (a) efficiency (%) 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 v in1 = 12v v out1 = 5v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b ? i out1 output current i out1 (a) efficiency (%) 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 v in1 = 8v v out1 =3.3v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b ? i out1 efficiency (%) output current i out1 (a) 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 v in1 = 24v v out1 = 3.3v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b output current i out1 (a) efficiency (%) ? i out1 v in1 = 12v v out1 = 3.3v l = 15 h c out1 = 22 f ta = 25c ls : crs20i40b output current i out1 (a) efficiency (%) 0 50 90 60 100 80 70 0.9 0.3 1.2 1.5 0.6 ? i out1
TB7110F 2011-05-19 16 overcurrent protection (series regulator section) 0 3 2 4 v in2 = 5v v out2 = 3.3v ta = 25c 1 output current i out2 (a) 1 1.5 2 0 output voltage v out2 (v) 5 6 0.5 v in2 = 5v , v out2 = 3.3v ta = 25c 0 100 -100 50 output current i out2 (a) v out2 ? i out2 (series regulator section) output voltage v out2 (mv) 0 0.6 0.2 0.8 -50 0.4 ripple rejection (series regulator section) 0 60 40 80 v in1 = v in2 = 12v v out2 = 3.3v i out2 = 50ma ta = 25c 20 frequency f (hz) 1k 10k 100k 10 ripple rejection r.r (db) 100 100 ripple rejection (series regulator section) 0 60 40 80 v in2 = 5v v out2 = 3.3v i out2 = 50ma ta = 2 5 c 20 frequency f (hz) 1k 10k 100k 10 ripple rejection r.r (db) 100 100 v in1 = 12v v in1 = 24v startup characteristics (internal soft-start time) 1 ms/div v in1 = 24v v out1 = 5v v out2 = 3.3v ta = 25c l = 15 h output voltage : v out1 (2v/div) en input voltage:v en :l h output voltage : v out2 (2v/div)
TB7110F 2011-05-19 17 package dimensions hson8-p-0505-1.27 unit: mm weight: 0.068 g (typ.)
TB7110F 2011-05-19 18 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 a nd systems (collectively ?product?) without notice. ? this document and any information herein may not be reproduc ed without prior written permission from toshiba. even with toshiba?s written permission, reproduc tion is permissible only if reproducti on 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 prov iding 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, cu stomers must also refer to and comply with (a) the latest ve rsions of all relevant toshiba information, including without limitation, this document, the specifications, the data sheets and applicat ion notes for product and the precautions and condi tions set forth in the ?toshiba se miconductor reliability handbook? and (b) the instructions for the application with which the product will be us ed with or for. customers are solely responsible for all aspe cts of their own product design or applications , including but not limited to (a) determining the appropriateness of the use of this product in such design or applications; (b) eval uating and determining the applicability of any info rmation contained in this document, or in c harts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operatin g parameters for such designs and applications. toshiba assumes no liability for customers? product design or applications. ? product is intended for use in general el ectronics applications (e.g., computers, personal equipment, office equipment, measur ing equipment, industrial robots and home electroni cs appliances) or for specif ic applications as expre ssly 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, bodily injury, serious property damage or se rious public impact (?unintended use?). unintended use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic s ignaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to el ectric power, and equipment used in finance-related 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 pres ented 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 document, 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 so ftware or technology for any military purposes, including without limitation, for the design, development, use, stockpiling or m anufacturing of nuclear, chemical , or biological weapons or missi le technology products (mass destruction w eapons). product and related software and technology may be controlled under the japanese foreign exchange and foreign trade law and the u.s. expor t administration regulations. ex port and re-export of product or related software or technology are strictly prohibited exc ept in compliance with all applic able 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 applicable laws and regula tions that regulate the inclusion or use of controlled subs tances, including without limitation, the eu rohs directive. toshiba assumes no liability for damages or losses occurring as a result o f noncompliance with applicable laws and regulations.

▲Up To Search▲

Price & Availability of TB7110F

	To Download TB7110F Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .