View LTC3450-15_8741835.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ltc3450 1 3450fa , ltc and lt are registered trademarks of linear technology corporation. all other trademarks are the property of their respective owners. features descriptio u applicatio s u typical applicatio u the ltc ? 3450 is a complete power converter solution for small thin film transistor (tft) liquid crystal display (lcd) panels. the device operates from a single lithium-ion cell, 2- to 3-cell alkaline input or any voltage source between 1.5v and 4.6v. the synchronous boost converter generates a low noise, high efficiency 5.1v, 10ma supply. internal charge pumps are used to generate 10v, 15v, and C5v, C10v or C15v. output sequencing is controlled internally to insure proper initialization of the lcd panel. a master shutdown input reduces quiescent current to <2 a and quickly discharges each output for rapid turn off of the lcd panel. the ltc3450 is offered in a low profile (0.75mm), 3mm 3mm 16-pin qfn package, minimizing the solution profile and footprint. cellular handsets with color display handheld instruments pda generates three voltages: 5.1v at 10ma 5v, 10v, or 15v at 500 a 10v or 15v at 500 a better than 90% efficiency low output ripple: less than 5mv p-p complete 1mm component profile solution controlled power-up sequence: av dd /v gl /v gh all outputs disconnected and actively discharged in shutdown low noise fixed frequency operation frequency reduction input for high efficiency in blank mode ultralow quiescent current: 75 a (typ) in scan mode available in a 3mm 3mm 16-pin qfn package triple output power supply for small tft-lcd displays 0.1 f 2.2 f v in 1.5v to 4.6v av dd 5.1v/10ma vgh (3 av dd ) 15v/500 a vgl C10v/500 a 3450 ta01 0.1 f c1 + c1 C 0.1 f c2 + c2 C 11 7 8 10 14 13 v2x v3x v inv v in shdn mode sw v out v neg ltc3450 gnd 12 15 16 1 2 3 6 5 off on blank scan 47 h 4 9 2.2 f 0.47 f 0.1 f 0.1 f c3 C c3 + 5.1v, 10v, 15v triple output tft-lcd supply av dd efficiency vs v in v in (v) 1.5 efficiency (%) 100 95 90 85 80 75 70 3.0 4.0 3450 ta01b 2.0 2.5 3.5 4.5 5.0 100 h 47 h 5ma load
ltc3450 2 3450fa v in , sw.......................................................... C 0.3 to 7v shdn, mode ................................................. C 0.3 to 7v v out .......................................................................... C 0.3 to 5.5v v neg ........................................................................ C17v to 0.3v operating temperature range ltc3450e (note 4) ............................. C 40 c to 85 c storage temperature range ................. C 65 c to 125 c order part number t jmax = 125 c, ja = 68 c/w consult ltc marketing for parts specified with wider operating temperature ranges. ltc3450eud absolute axi u rati gs w ww u package/order i for atio uu w (note 1) (referred to gnd) electrical characteristics the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. v in = 3.6v, v out = 5.2v unless otherwise noted. 16 15 14 13 5 6 7 8 top view ud package 16-lead (3mm 3mm) plastic qfn exposed pad is v neg (pin 17) must be soldered to pcb 9 10 11 12 17 4 3 2 1 c3 + c3 C v neg mode v2x c1 + c1 C gnd v inv v3x c2 + c2 C shdn v in v out sw ud part marking laac parameter conditions min typ max units input voltage range 1.5 4.6 v v in quiescent supply current mode = v in 75 130 a v out quiescent supply current mode = v in 80 a v in quiescent supply current mode = gnd 30 50 a v out quiescent supply current mode = gnd 13 a v in quiescent current shdn = gnd, v out open 0.01 2 a 5v boost regulator v out output voltage load on v out = 5ma 5.049 5.100 5.151 v v out efficiency load on v out = 5ma, (note 2) 90 % v out maximum output current l = 47 h, (note 2) 11 ma switch current limit 90 120 ma switching frequencyboost mode = v in 550 khz switching frequencyboost mode = gnd 15.62 khz charge pumps v2x output voltage load on v2x = 100 a 9.792 10.1 10.608 v
ltc3450 3 3450fa electrical characteristics the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. v in = 3.6v, v out = 5.2v unless otherwise noted. parameter conditions min typ max units note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired. note 2: specification is guaranteed by design and not 100% tested in production. v3x output voltage load on v3x = 100 a 14.688 15.2 15.912 v v2x efficiency load on v2x = 100 a, (note 2) 90 % v3x efficiency load on v3x = 100 a, (note 2) 80 % output impedance v2x, v3x flying capacitors = 0.1 f1k ? v neg output voltage load on v neg = 100 a, v inv = v2x C10.608 C10.1 C 9.792 v v neg efficiency load on v neg = 100 a (note 2) 80 % output impedance v neg flying capacitor = 0.1 f1k ? switching frequency charge pumps mode = v in 62.5 khz switching frequency charge pumps mode = gnd 3.75 khz v neg to v3x delay (note 3) 3 4 10 ms logic inputs shdn pin threshold 0.4 0.77 1.2 v mode pin threshold 1.6 v note 3: measured from point at which v neg crosses C5v to point at which c2 C starts switching. note 4: the ltc3450e is guaranteed to meet performance specifications from 0 c to 70 c. specifications over the C 40 c to 85 c operating temperature range are assured by design, characterization and correlation with statistical process controls.
ltc3450 4 3450fa typical perfor a ce characteristics uw efficiency (%) 100 95 90 85 80 75 70 efficiency (%) 100 95 90 85 80 75 70 v in (v) 1.5 3.0 4.0 2.0 2.5 3.5 4.5 5.0 v in (v) 1.5 3.0 4.0 2.0 2.5 3.5 4.5 5.0 v in (v) 1.5 3.0 4.0 2.0 2.5 3.5 4.5 5.0 v in (v) 1.5 3.0 4.0 2.0 2.5 3.5 4.5 5.5 5.0 v in (v) 1.5 3.0 4.0 2.0 2.5 3.5 4.5 5.5 5.0 3450 g02 3450 g03 av dd (v) 5.16 5.14 5.12 5.10 5.08 5.06 5.04 3450 g06 v gh (v) 15.6 15.4 15.2 15.0 14.8 14.6 14.4 v in current ( a) 100 90 80 70 60 50 40 30 20 10 0 3450 g04 v in current ( a) 3450 g05 800 700 600 500 400 300 200 100 v gh load ( a) 0 100 300 500 700 900 200 400 600 800 3450 g07 1000 v gl load ( a) 0 100 300 500 700 900 200 400 600 800 1000 v gl (v) C 9.0 C 9.2 C 9.4 C 9.6 C 9.8 C 10.0 C 10.2 C 10.4 3450 g08 temperature ( c) C40C25 3450 g09 C10 520 35 50 65 80 95 110 125 av dd (v) 5.200 5.175 5.150 5.125 5.100 5.075 5.050 5.025 5.000 10ma 2ma 0ma 2ma 10ma 2ma 5ma 5ma 5ma 10ma l = 47 h l = 100 h av dd efficiency vs v in av dd efficiency vs v in no load v in current in blank mode no load v in current in scan mode av dd vs v in and load v gh vs load v gl vs load av dd vs temperature figure 1 circuit, 1ma load (t a = 25 c unless otherwise noted)
ltc3450 5 3450fa typical perfor a ce characteristics uw av dd 5mv/div (ac) 1 s/div v in = 3.6v c2 = 2.2 f 3450 g10 av dd 100mv/div (ac) av dd load 5ma/div 100 s/div 5ma 1ma v in = 3.6v c2 = 2.2 f 3450 g11 v gh 10v/div av dd 5v/div v gl 5v/div 2ms/div 0 0 v in = 3.6v c2 = 2.2 f 3450 g12 0 0 inductor current 100ma/div av dd 2v/div 20 s/div v in = 3.6v 3450 g13 av dd ripple voltage av dd load = 5ma av dd transient response av dd , v gl , v gh turn-on and turn-off sequence av dd turn-on showing inrush current limiting
ltc3450 6 3450fa pi fu ctio s uuu c3 + (pin 1): charge pump inverter flying capacitor posi- tive node. the charge pump inverter flying capacitor is connected between c3 + and c3 C . the voltage on c3 + will alternate between gnd and v inv at an approximate 50% duty cycle while the inverting charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results. c3 ? (pin 2): charge pump inverter flying capacitor nega- tive node. the charge pump inverter flying capacitor is connected between c3 + and c3 C . the voltage on c3 C will alternate between gnd and v neg at an approximate 50% duty cycle while the inverting charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results. v neg (pin 3): charge pump inverter output. v neg can be either C 5v or C10v depending on where v inv is con- nected. v neg should be bypassed to gnd with at 0.1 f or larger x5r type ceramic capacitor. v neg can also be configured for C15v with two external low current schottky diodes (see applications section). mode (pin 4): drive mode high to force the ltc3450 into high power (scan) mode. drive mode low to force the ltc3450 into low power (blank) mode. the output volt- ages remain active with the mode pin driven low but with reduced output current capability. mode must be pulled up to v in or higher on initial application of power in order for proper initialization to occur. shdn (pin 5): master shutdown input for the ltc3450. driving shdn low disables all ic functions and reduces quiescent current from the battery to less than 2 a. each generated output voltage is actively discharged to gnd in shutdown through internal pull down devices. an optional rc network on shdn provides a slower ramp up of the boost converter inductor current during startup (soft-start). v in (pin 6): input supply to the ltc3450. connect v in to a voltage source between 1.5v and 4.6v. bypass v in to gnd with a 2.2 f x5r ceramic capacitor. v out (pin 7): main 5.1v output of the boost regulator and input to the voltage doubler stage. bypass v out with a low esr, esl ceramic capacitor (x5r type) between 2.2 f and 10 f. sw (pin 8): switch pin. connect the inductor between sw and v in . keep pcb trace lengths as short and wide as possible to reduce emi and voltage overshoot. if the inductor current falls to zero, the internal p-channel mosfet synchronous rectifier is turned off to prevent reverse charging of the inductor and an internal switch connects sw to v in to reduce emi. gnd (pin 9): signal and power ground for the ltc3450. provide a short direct pcb path between gnd and the output filter capacitor(s) on v out , v2x, v3x and v neg . c1 ? (pin 10): charge pump doubler flying capacitor negative node. the charge pump doubler flying capacitor is connected between c1 + and c1 C . the voltage on c1 C will alternate between gnd and v out at an approximate 50% duty cycle while the charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results. c1 + (pin 11): charge pump doubler flying capacitor positive node. the charge pump doubler flying capacitor is connected between c1 + and c1 C . the voltage on c1 + will alternate between v out and v2x at an approximate 50% duty cycle while the charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results. v2x (pin 12): charge pump doubler output. this output is 10.2v (nom) at no load and is capable of delivering up to 500 a to a load. v2x should be bypassed to gnd with a 0.47 f x5r type ceramic capacitor. c2 ? (pin 13): charge pump tripler flying capacitor nega- tive node. the charge pump tripler flying capacitor is connected between c2 + and c2 C . the voltage on c2 C will alternate between gnd and v out at an approximate 50% duty cycle while the charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results. c2 + (pin 14): charge pump tripler flying capacitor posi- tive node. the charge pump tripler flying capacitor is connected between c2 + and c2 C . the voltage on c2 + will alternate between v2x and v3x at an approximate 50% duty cycle while the charge pump is operating. use a 10nf or larger x5r type ceramic capacitor for best results.
ltc3450 7 3450fa pi fu ctio s uuu cf1 0.1 f c1 2.2 f v in 1.5v to 4.6v av dd 5.1v/10ma vgh (3 av dd ) 15v/500 a 10v vgl C10v/500 a 3450 ta01 c1 + c1 C v2x v in shdn global shutdown mode sw v out off on blank scan l1 47 h c2 2.2 f c7 1 f 8 6 4 5 7 9 11 10 12 shutdown synchronous pwm boost converter oscillator charge pump doubler in out cf2 0.1 f c2 + c2 C v3x c8 0.47 f 14 13 15 shutdown shutdown charge pump tripler in 69khz 550khz out cf3 0.1 f c3 + c3 C v neg gnd c11 0.47 f 1 v inv 16 2 3 shutdown charge pump inverter in out block diagra w v3x (pin 15): charge pump tripler output. this output is 15.3v (nom) at no load and is capable of delivering up to 500 a to a load. v3x should be bypassed to gnd with a 0.1 f x5r type ceramic capacitor. v inv (pin 16): positive voltage input for the charge pump inverter. the charge pump inverter will generate a nega- tive voltage corresponding to the voltage applied to v inv . connecting v inv to 5v or 10v will generate C5v or C10v respectively on v neg . see applications section for C15v generation. exposed pad (pin 17): the exposed pad must be con- nected to v neg (pin 3) on the pcb. do not connect the exposed pad to gnd.
ltc3450 8 3450fa operatio u the ltc3450 is a highly integrated power converter in- tended for small tft-lcd display modules. a fixed fre- quency, synchronous pwm boost regulator generates a low noise 5.1v, 10ma bias at greater than 90% efficiency from an input voltage of 1.5v to 4.6v. three charge pump converters use the 5.1v output to generate 10v, 15v and C5v, C10v or C15v at load currents up to 500 a. each converter is frequency synchronized to the main 550khz (nominal) boost converter. the generated output voltages are internally sequenced to insure proper initialization of the lcd panel. a digital shutdown input rapidly discharges each generated output voltage to provide a near instanta- neous turn-off of the lcd display. boost converter the synchronous boost converter utilizes current mode control and includes internally set control loop and slope compensation for optimized performance and simple de- sign. only three external components are required to complete the design of the 5.1v, 10ma boost converter. the high operation frequency produces very low output ripple and allows the use of small low profile inductors and tiny external ceramic capacitors. the boost converter also disconnects its output from v in during shutdown to avoid loading the input power source. softstart produces a controlled ramp of the converter input current during startup, reducing the burden on the input power source. very low operating quiescent current and synchronous operation allow for greater than 90% conversion effi- ciency. the mode input reduces the boost converter operating frequency by approximately 8x when driven high and reduces the output power capability of the boost con- verter. mode is asserted when the polysilicon tft-lcd display is in its extremely low power blank condition. the boost converter further reduces its quiescent current in this mode, delivering both lower input (battery) current drain and low noise operation. charge pumps the ltc3450 includes three separate charge pump con- verters which generate 10v, 15v and either C5v, C10v or C15v. each output can deliver a maximum of 500 a. the charge pumps feature fixed frequency, open-loop opera- tion for high efficiency and lowest noise performance. the charge pump converters operate at 1/8 the boost con- verter frequency and include internal charge transfer switches. thus, each charge pump requires only two small external capacitors, one to transfer charge, and one for filtering. similar to the boost converter, the charge pumps operating frequency reduces to approximately 4khz in blank mode, maintaining low noise operation but at re- duced output current capability. output sequencing refer to the following text and figure 1 for the ltc3450 power-up sequence. when input power is applied, the boost converter initializes and charges its output towards the final value of 5.1v. when the boost converter output reaches approximately 90% of its final value (4.5v), an internal 5v ok signal is asserted which allows the charge pump doubler to begin operation toward its final goal of 10v. approximately 1ms later, the charge pump inverter begins operation toward its final goal of either C5v or C10v depending on the connection of the v inv input. when the C5v or C10v output (v neg ) reaches approximately 50% of its final value, a 4ms (nominal) timeout period begins. at the conclusion of the 4ms timeout period, the charge pump tripler is allowed to begin operation, which will eventually charge v3x to 15v (nominal). C10v 5v v out v neg v 2x v 3x 10v 15v 1ms 3450 f01 4ms figure 1. output sequencing
ltc3450 9 3450fa inductor selection inductors in the range of 47 h to 100 h with saturation current (i sat ) ratings of at least 150ma are recommended for use with the ltc3450. ferrite core materials are strongly recommended for their superior high frequency performance characteristics. a bobbin or toroid type core will reduce radiated noise. inductors meeting these re- quirements are listed in table 1. table 1. recommended inductors part l max dcr height number ( h) ( ? ) (mm) vendor clq4d10-470 47 1.28 1.2 sumida clq4d10-101 100 3.15 (847) 956-0666 cmd4d08-470 47 1.6 1.0 www.sumida.com do1606-473 47 1.1 2.0 coilcraft do1606-104 100 2.3 (847) 639-6400 dt1608-473 47 0.34 2.92 www.coilcraft.com dt1608-104 100 1.1 lqh43mn470j03 47 1.5 2.6 murata lqh43mn101j03 100 2.5 www.murata.com du6629-470m 47 0.64 2.92 coev magnetics du6629-101m 100 1.27 www.circuitprotection.com capacitor selection the boost converter requires two capacitors. the input capacitor should be an x5r type of at least 1 f. the v out capacitor should also be an x5r type between 2.2 f and 10 f. a larger capacitor (10 f) should be used if lower output ripple is desired or the output load required is close to the 10ma maximum. the charge pumps require flying capacitors of at least 0.1 f to obtain specified performance. ceramic x5r types are strongly recommended for their low esr and esl and capacitance versus bias voltage stability. the filter capaci- tor on v2x should be at least 0.1 f. a 0.47 f or larger capacitor on v2x is recommended if v inv is connected to v2x. the filter capacitors on v3x and v neg should be 0.1 f or larger. please be certain that the capacitors used are rated for the maximum voltage with adequate safety margin. refer to table 2 for a listing of capacitor vendors. table 2. capacitor vendor information supplier phone website avx (803) 448-9411 www.avxcorp.com murata (714) 852-2001 www.murata.com taiyo yuden (408) 573-4150 www.t-yuden.com applicatio s i for atio wu u u soft-start soft-start operation provides a gradual increase in the current drawn from the input power source (usually a battery) during initial startup of the ltc3450, eliminating the inrush current which is typical in most boost convert- ers. this reduces stress on the input power source, boost inductor and output capacitor, reduces voltage sag on the battery and increases battery life. the rate at which the input current will increase is set by two external compo- nents (r ss and c ss ) connected to shdn (refer to figure 2). upon initial application of power or release of a pull down switch on shdn, the voltage on shdn will increase relative to the r ? c time constant or r ss ? c ss . after one time constant shdn will rise to approximately 63.2% of the voltage on v in . from 0v to approximately 0.77v on shdn, no switching will occur because the shutdown threshold is 0.77v (typ). from 0.77v to 1v the maximum switch pin current capability of the ltc3450 will gradually increase from near zero to the maximum current limit. an r ss in the range of 1m ? to 10m ? is recommended. if shdn is driven high with a logic signal, the input current will gradually increase to its maximum value in approxi- mately 50 s. 5 shdn 3450 f02 c ss 6.8nf r ss 1m 5% 1ms soft-start with 3.6v v in v in figure 2. soft-start component configuration printed circuit board layout guidelines high speed operation of the ltc3450 demands careful attention to pcb layout. you will not get advertised perfor- mance with careless layout. figure 3 shows the recom- mended component placement for a single layer pcb. a multilayer board with a separate ground plane is ideal but not absolutely necessary.
ltc3450 10 3450fa applicatio s i for atio wu u u figure 3. suggested layout typical applicatio u cf1 0.1 f c1 2.2 f v in 1.5v to 4.6v d1, d2: dual schottky diode, panasonic ma704wkct l1: sumida cmd4d08-470 av dd 5.1v/10ma vgh 15v/500 a d1 d2 vgl C15v/500 a 3450 ta02 cf3 0.1 f cf2 0.1 f 11 10 14 13 v2x v3x v inv v in mode sw v out v neg c3 C c3 + ltc3450 gnd 12 15 16 1 2 3 6 5 off on blank scan l1 47 h 4 9 c2 2.2 f 0.1 f c4 0.47 f c6 0.1 f c5 0.1 f 7 8 c1 + c1 C c2 + c2 C shdn 5.1v, ?5v, 15v triple output tft-lcd supply v neg note: qfn package exposed pad is connected to the v neg pin. do not connect exposed pad to ground mode shdn 3450 f03 v out gnd v in v3x jumper
ltc3450 11 3450fa package descriptio u ud package 16-lead plastic qfn (3mm 3mm) (reference ltc dwg # 05-08-1691) 3.00 0.10 (4 sides) recommended solder pad pitch and dimensions 1.45 0.05 (4 sides) note: 1. drawing conforms to jedec package outline mo-220 variation (weed-2) 2. drawing not to scale 3. all dimensions are in millimeters 4. dimensions of exposed pad on bottom of package do not include mold flash. mold flash, if present, shall not exceed 0.15mm on any side 5. exposed pad shall be solder plated 6. shaded area is only a reference for pin 1 location on the top and bottom of package pin 1 top mark (note 6) 0.40 0.10 0.23 typ (4 sides) bottom viewexposed pad 1.45 0.10 (4-sides) 0.75 0.05 r = 0.115 typ 0.25 0.05 1 15 16 2 0.50 bsc 0.200 ref 2.10 0.05 3.50 0.05 0.70 0.05 0.00 C 0.05 (ud) qfn 0603 0.25 0.05 0.50 bsc package outline information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
ltc3450 12 3450fa linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com ? linear technology corporation 2003 related parts typical applicatio u part number description comments lt1310 1.5a i sw , 4.5mhz, v in : 2.75v to 18v, v out = 35v, i q = 12ma, i sd = <1 a high efficiency step-up dc/dc converter mse package lt1613 550ma i sw , 1.4mhz, v in : 0.9v to 10v, v out = 34v, i q = 3ma, i sd = <1 a high efficiency step-up dc/dc converter thinsot package lt1615/lt1615-1 300ma/80ma i sw , constant off-time, v in : 1.2v to 15v, v out = 34v, i q = 20 a, i sd = <1 a high efficiency step-up dc/dc converter thinsot package lt1940 dual output 1.4a i out , constant 1.1mhz, v in : 3v to 25v, v out (min) = 1.2v, i q = 2.5ma, i sd = <1 a high efficiency step-down dc/dc converter tssop-16e package lt1944 dual output 350ma i sw , constant off-time, v in : 1.2v to 15v, v out = 34v, i q = 20 a, i sd = <1 a high efficiency step-up dc/dc converter ms package lt1944-1 dual output 150ma i sw , constant off-time, v in : 1.2v to 15v, v out = 34v, i q = 20 a, i sd = <1 a high efficiency step-up dc/dc converter ms package lt1945 dual output, pos/neg, 350ma i sw , constant off-time, v in : 1.2v to 15v, v out = 34v, i q = 20 a, i sd = <1 a high efficiency step-up dc/dc converter ms package lt1946/lt1946a 1.5a i sw , 1.2mhz/2.7mhz, v in : 2.45v to 16v, v out = 34v, i q = 3.2ma, i sd = <1 a high efficiency step-up dc/dc converter ms8 package lt1947 triple output ( for tft-lcd) 1.1a i sw ,v in : 2.7v to 8v, v out = 34v, i q = 9.5ma, i sd = <1 a 3mhz high efficiency step-up dc/dc converter ms package lt1949/lt1949-1 550ma i sw , 600khz/1.1mhz, v in : 1.5v to 12v, v out = 28v, i q = 4.5ma, i sd = <25 a high efficiency step-up dc/dc converter s8, ms8 packages ltc3400/ltc3400b 600ma i sw , 1.2mhz, v in : 0.85v to 5v, v out = 5v, i q = 19 a/300 a, i sd = <1 a synchronous step-up dc/dc converter thinsot package ltc3401 1a i sw , 3mhz, synchronous step-up dc/dc converter v in : 0.5v to 5v, v out = 5v, i q = 38 a, i sd = <1 a, ms package ltc3402 2a i sw , 3mhz, synchronous step-up dc/dc converter v in : 0.5v to 5v, v out = 5v, i q = 38 a, i sd = <1 a, ms package 5.1v, 5v, 15v triple output tft-lcd supply cf1 0.1 f c1 2.2 f v in 1.5v to 4.6v l1: sumida cmd4d08-470 av dd 5.1v/10ma vgh (3 av dd ) 15v/500 a vgl C5v/500 a 3450 ta03 cf3 0.1 f cf2 0.1 f 11 7 8 10 14 13 v2x v3x v inv v in mode sw v out v neg ltc3450 gnd 12 15 16 1 2 3 6 5 off on blank scan l1 47 h 4 9 c2 2.2 f c4 0.47 f c6 0.1 f c5 0.1 f c1 + c1 C c2 + c2 C shdn c3 C c3 + lt/tp 0205 1k rev a ? printed in usa

▲Up To Search▲

Price & Availability of LTC3450-15

	To Download LTC3450-15 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .