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mpm3 5 0 6a 36v/ 0. 6 a module synchronous step - down converter with integrated inductor MPM3506A rev. 1.0 www.monolithicpower.com 1 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. description the mpm3506 a is a synchronous , rectified , step - down converter with built - in power mosfets , inductor , and two capacitors . it offers a compact solution with only 4 external components to achieve a 0.6 a continuous output current with excellent loa d and line regulation over a wide input supply range. the MPM3506A operates in a 1 .15 mhz switching frequency , which provides fast load transient response. full protection features include over - current protection (ocp) and thermal shutdown (tsd) . the mpm3 506a eliminates design and manufacturing risks while dramatically improving time - to - market. the MPM3506A is available in a space - saving qfn - 19 ( 3mmx5mmx1. 6 mm ) package . features ? complete switch - mode power supply ? 4.5 v to 36 v wide operating input range ? 0.6 a continuous load current ? 90 m / 6 0m low r ds(on) internal power mosfets ? fixed 1.15 mhz switching frequency ? 800khz - 2mhz frequency sync ? power - save mode for light load ? power good indicator ? ocp with valley current d etection and hiccup ? thermal shutdown ? output adjustable from 0.8v ? available in a qfn - 19 (3 mm x5 mm x1. 6 mm) package ? total solution size 6.7mmx6.3mm applications ? industrial controls ? automotive ? medical and imaging equipment ? telecom applications ? ldo replacement ? space and resource - l imited applications ? distributed power systems all mps pa rts are lead - free , halogen - free, and adhere to the rohs directive. for mps green status, please visit the mps website under quality assurance. mps and the future of analog ic technology are registered t rademarks of monolithic power systems, inc. ty pical application m p m 3 5 0 6 a i n e n / s y n c p g n d f b v i n e n r 1 7 5 k r 2 2 4 k c 2 4 7 u f c 1 4 . 7 u f 3 . 3 v / 0 . 6 a 4 . 5 v - 3 6 v v o u t a g n d o u t
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 2 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. ordering information part number* package top marking MPM3506A gqv qfn - 19 (3mmx5mmx1.6mm) see b e low * for tape & reel, add suffix C z (eg. MPM3506A gqv C z) top marking mp: mps prefix y: y ear code w: w eek code 3506 a : f irst four digits of the part number lll: l ot number m: module package reference v i n p g s w v c c e n / s y n c a g n d s w b s t s w o u t o u t o u t f b p g n d n c 1 1 8 n c 1 9 n c n c p g n d 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 a l l n c p i n s m u s t b e l e f t f l o a t i n g . t o p v i e w
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 3 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. absolute maximum rat ings (1) v in ................................ ................ - 0.3v to 40 v v sw ................................ ................................ .... - 0.3v ( - 5v for <10ns) to v in + 0.3v ( 43v fo r <10ns ) v bs t ................................ ..................... v sw + 6v all o ther p ins ................................ - 0.3v to 6v (2) continuous p ower d issipation (t a = + 25 c) ( 3 ) ................................ ............................ 2.7 w junction t emperature ............................... 150 c lead t emperature ................................ .... 260 c storage t emperature .................. - 65 c to 150 c recommended operating conditions ( 4 ) supply v oltage ( v in ) ........................ 4.5 v to 36 v output v oltage ( v out ) .............. 0.8 1 v to v in *d max operating j unction t emp . (t j ). .. - 40 c to +125 c thermal resistance ( 5 ) ja jc qfn - 19 ( 3 mm x5 mm x1.6 mm) . 46 ...... 10 ... c/w n otes : 1) absolute maximum ratings are rated under room temperature unless otherwise noted. exceeding these ratings may damage the device. 2) please refer to the e nable/sync section on page 12 for the absolute maximum rating of en /sync . 3) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), t he junction - to - ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max) - t a )/ ja . exceeding the maximum allowable power dissipation will produce an excessive die temperature, causing the regulator to go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 4) the device is not guaranteed to function outside of its operating conditions. 5) measured on jesd51 - 7, 4 - layer pcb.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 4 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. electrical character istics v in = 24 v , t j = - 40 c to +125 c ( 6 ) , unless otherwise noted. typical values are at t j = +25 c . parameter symbol condition min typ max units supply c urrent ( s hutdown) i in v en = 0v 8 a supply c urrent ( q uiescent) i q v fb = 1v 0. 5 8 0. 8 ma hs s witch - o n r esistance hs rds - on v bst - sw = 5v 90 16 5 m ls s witch - o n r esistance ls rds - on v cc = 5v 60 115 m inductor dc r esistance l dcr 75 m switch l eakage sw lkg v en = 0v, v sw = 24v 1 a high - s ide p eak c urrent l imit i peak_l imit 20 % d uty c ycle 2 4 a low - s ide v alley c urrent l imit i valley_limit vout s hort to gnd 1. 3 a oscillator f requency f sw v fb = 700mv 800 1150 1500 k hz maximum d uty c ycle d max v fb = 700mv 89 92 % minimum o n t ime ( 7 ) o n_ min 50 n s feedback v oltage v fb t j = 25 c 798 810 822 mv t j = - 40 c to +125c 790 830 mv feedback c urrent i fb v fb = 8 5 0mv 10 100 na en r ising t hreshold v en_rising 1.1 1.45 1.8 v en f alling t hreshold v en_falling 0.95 1.3 1.65 v en i nput c u rrent i en v en = 2v 4 7 a en t urn - o ff d elay ( 7 ) en td - off 3 s sync f requency r ange f sync 800 2000 khz vin u nder - v oltage l ockout t hreshold r ising inuv vth 3.75 4.05 4.35 v vin u nder - v oltage l ockout t hreshold h ysteresis inuv hys 400 m v pg r ising t hreshold pg vth - hi 84% 87.5% 91% v fb pg f alling t hreshold pg vth - lo 79% 82.5% 86% v fb pg r ising d elay pg td _rising 30 90 160 s pg f alling d elay pg td_falling 25 55 95 s pg s ink c urrent c apability v pg sink 4ma 0.4 v pg l eakage c urrent i pg - leak 100 na vcc r egulator v cc 4.6 4.9 5.2 v vcc l oad r egulation i cc = 5ma 1.5 4 % soft - s tart t ime t ss v out from 10% to 90% 0.5 1.45 2.5 ms thermal s hutdown ( 7 ) 165 c thermal h ysteresis ( 7 ) 2 0 c n otes : 6 ) not tested in production and guarante ed by over - temperature correlation. 7 ) derived from characterization test. not tested in productio n .
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 5 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typical performance characteristics typical p erformance characteristic waveforms are captured from the evaluation board . v in = 24v, v out = 3.3v, t a = 25 c, unless otherwise noted.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 6 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typical performance characteristics (continued) typical performance characteristic waveforms are captured from the evaluation board. v in = 24v, v out = 3.3v, t a = 25c, unless otherwise noted.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 7 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typi cal performance char acteristics (continued) typical performance characteristic waveforms are captured from the evaluation board. v in = 24v, v out = 3.3v, t a = 25c, unless otherwise noted.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 8 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typical performance characteristics (continued) typical performan ce characteristic waveforms are captured from the evaluation board. v in = 24v, v out = 3.3v, t a = 25c, unless otherwise noted.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 9 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typical performance characteristics (continued) typical performance characteristic waveforms are captured from the evaluation board. v in = 24v, v out = 3.3v, t a = 25c, unless otherwise noted.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 10 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. pin functions package pin # name description 1 fb feedback. connect fb to the tap of an external resistor divider from the output to a gnd to set the output voltage. the frequency foldback comparator lowers the oscillator frequency ( when the fb voltage is below 4 00mv ) to prevent current - limit runaway during a short - circuit fault. place the resistor divider as close to fb as possible. avoid placing via s on the fb traces. 2 vcc internal 5v l do o utput. the i nternal circuit integrates a n ldo output capacitor, so an external capacitor is not necessary . 3 agnd analog g round. agnd is the r eference ground of the logic circuit. agnd is connected internally to pgnd. 4, 5, 6 sw switch o utput. no co nnection is needed for the sw pins , but a large copper plane is recommended on pin s 4, 5 , and 6 for improved heat sink. 7, 8, 9 out power o utput. connect the load to out; an o utput capacitor is needed. 10, 14 , 18 , 19 nc no c onnection . d o not c onnect; nc must be left floating. 11 bst bootstrap. a b ootstrap capacitor is integrated internall y, so an external connection is not necessary . 12, 13, p gnd power g round. pgnd is the r eference ground of the power device . pcb layout r equires extra care (please see recommended pcb layout guidelines on page 1 6 . for best results, connect to p gnd with copper and vias. 15 v in supply v oltage. v in supplies power for the internal mosfet and regulator. the MPM3506A operates from a + 4.5 v to + 36 v input rail. v in r equires a low esr and low inductance capacitor to decouple the input rail. place the input capacitor very close to v in and connect it with wide pcb traces and multiple vias. 16 en /sync enable/synchronize. en /sync = high to enable the module. float ing en /sync or con nect ing it to ground will disable the converter. apply an external clock to en /sync to change the switching frequency. 17 pg power g ood i ndicator. pg is an o pen - drain structure.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 11 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. functional block diagram f igure 1 : functional block diagram p g o u t a g n d p g n d e n / s y n c c o m p a r a t o r o n - t i m e c o n t r o l l o g i c c o n t r o l c u r r e n t - s e n s e a m p l i f i e r c u r r e n t - l i m i t c o m p a r a t o r 1 0 k v i n
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 12 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. operation the MPM3506A is a high - frequency , synchronous , rectified , step - down , switch - mode converter with built - in power mosfets , inductor , and two capacitors . it offers a very compact solution that achieve s a 0.6 a continuous output current with excellent load and line regulation over a 4.5v to 36 v input supply range . the MPM3506A operates in a fixed - frequency, peak - current C control mode to regulate the output voltage. a n internal clock initiates a pwm cycle. the inte grated high - side power mosfet (hs - fet) turn s on and remains on until the current reaches the value set by the comp voltage. when the power switch is off, it remains off until the next clock cycle starts. if the current in the hs - fet does not reach the valu e set by the comp value with in 92 % of one pwm period, the hs - fet is forced off . internal regulator a 5v internal regulator powers most of the internal circuitries. this regulator takes v in and operates in the full v in range. when v in exceeds 5.0v, the outp ut of the regulator is in full regulation. when v in is less than 5.0v, the output will decrease . t he part integrates an internal decoupling capacito r, so an external vcc output capacitor is not necessary . aam operation the MPM3506A has a dvanced a synchrono us m odulation (aam ) power - save mode for light load. aam voltage ( v aam ) is fixed internal ly . the internal 250mv aam voltage sets the transition point from aam to pwm. under a heavy - load condition, the v comp is higher than v aam . when the clock goes high, the hs - fet turns on and remains on until v ilsense reaches the value set by the comp voltage. the internal clock re - sets every time v comp is higher than v aam . under a light - load condition, the value of v comp is low. when v comp is less than v aam and v fb is les s than v ref , v comp ramps up until it exceeds v aam . at this time, the internal clock is blocked, causing the MPM3506A to skip pulses for p ulse f requency m odulation (pfm ) mode , achiev ing the light - load power save (see fig ure 2) . f igure 2 : simplified aam control logic error amplifier (ea) the error amplifier compares the fb voltage to the internal 0.8 1 v reference ( v ref ) and outputs a current proportional to the difference between the two. this output curr ent then charge s or discharge s the internal compensation network to form the comp voltage ( which control s the power mosfet current ) . the optimized internal compensation network minimizes the external component count and simplifies the control loop design. under - voltage lockout (uvlo) under - voltage lockout (uvlo) protects the chip from operating at an insufficient supply voltage. the MPM3506A uvlo comparator monitors the output voltage of the internal regulator ( vcc ) . the uvlo rising threshold is about 4 .05 v while its falling threshold is 3. 6 5v. e n / sync en /sync is a digital control pin that turns the regulator on and off. drive en /sync high to turn on the regulator; drive en /sync low to turn off the regulator . an internal 1m? resistor from en /sync to gnd allo ws en /sync to be floated to shut down the chip. en /sync is clamped internally using a 6.5v series zener diode (see fig ure 3 ) . connecting t he en /sync input through a pull - up resistor to the voltage on v in limits the en /sync input current to less than 100a. for example, with 12v connected to v in , r pullup (12v C 6.5v) 100a = 55k?. connecting en /sync directly to a voltage source without a pul l - up resistor requires limiting the amplitude of the voltage source to 6v to prevent damage to the zener diode. 4 .
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 13 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. f igure 3 : 6.5v zener diode connection connect a n external clock with a range of 800khz to 2 mhz to synchronize the internal clock rising edge to the external clock rising edge. the pulse width of the external clock signal should be less than 700n s. internal soft start (ss) the soft start prevents the co nverter output voltage from overshooting during start - up. when the chip starts up , the internal circuitry generates a soft - start voltage (ss) that ramps up from 0v to 5v. when ss is lower than v ref , the error amplifier uses ss as the reference. when ss is higher than v ref , the error amplifier uses v ref as the reference. the ss time is set internally to 1. 3 ms. over - current protection and hiccup the MPM3506A has cycle - by - cycle peak current limit protection and valley - current detection protection. the inductor current is monitored during the hs - fet on state. if the inductor current exceeds the current limit value set by the comp high - clamp voltage, the hs - fet turns off immediately. t hen the low - side mosfet (ls - fet) turn s on to discharge the energy , and the indu ctor current decrease s . the hs - fet remains off unless the inductor valley current is lower than a certain current threshold ( the valley current limit ) , even though the internal clk pulses high . i f the inductor current doesnt d rop below th e valley current limit when the clk pulses high , the hs - fet will miss the clk , and the switching frequency will decrease to half the nominal value. both the peak and valley current limit s assist in keep ing the inductor current from running away during an over - load or short - circuit condition. if t he output voltage drop s below the u nder - v oltage (uv) threshold , 50 % below the reference , typically the MPM3506A enters hiccup mode to re - start the part periodically (simultaneously the peak current limit is kicked) . this protection mode is useful when the output is dead short ed to ground and greatly reduces the average short - circuit current to alleviate thermal issue s and protect the regulator. the MPM3506A exits hiccup mode once the over - current condition is removed. thermal shutd own (tsd) thermal shutdown prevent s the chip from operating at exceedingly high temperatures. when the die temperature exceed s 165 c , the device stops switching . when the temperature drops below its lower threshold ( 145 c, typically) the power supply resum es operation . floating driver and bootstrap charging an internal bootstrap capacitor powers the floating power mosfet driver. a dedicated internal regulator (see f igure 4) charges and regulates the bootstrap capacitor voltage to ~5v. when the voltage betwe en the bst and sw nodes drops below regulation, a pmos pass transistor connected from v in to bst turns on. the charging current path is from v in , bst , and then to sw. the external circuit should provide enough voltage headroom to facilitate charging. as lo ng as v in is significantly higher than sw, the bootstrap capacitor remains charged. when the hs - fet is on ( v in v sw ), the bootstrap capacitor cannot charge. when the ls - fet is on , v in C v sw reaches its maximum value for fast charging. when there is no inductor current ( v sw = v out ) , the difference between v in and v out can charge the bootstrap capacitor. the floating d river has its own uvlo protection , with a rising threshold of 2.2v and a hysteresis of 150mv. f igure 4 : internal bootstrap charging circuit
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 14 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. start - u p and shutdown if v in exceed s its thresholds, the chip starts up . the reference block starts first, gener ating stable reference voltage and currents ; then the internal regulator is enabled. the regulato r provides a stable supply for the remaining circuitries. three events can shut down the chip: v in low , en low , and thermal shutdown. during the shutdown proce dure, the signaling path is blocked first to avoid any fault triggering. the comp voltage and the internal supply rail are then pulled down. the floating driver is not subject to this shutdown command.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 15 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. application informat ion setting the output voltage the external resistor divider set s the output voltage (see typical application on page 1). also, t he feedback resistor ( r1 ) sets the feedback loop bandwidth with the internal compensation capacitor (see typical application on page 1). choose r1 around 75 k when v out ? 1 v. r2 is then given using equation (1) : (1) f igure 5 : feedback network see fig ure 5 for the feedback network and table 1 for a list of the recommended resistor value s for common output voltages. t able 1 : resistor selection for common output voltages v out (v) r1 (k?) r2 (k?) 1.0 75 300 33 1.2 75 150 33 1.5 75 91 22 1.8 75 62 22 2.5 75 36 22 3.3 75 24 22 5 75 14.3 22 selecti ng the input capacitor the input current to the step - down converter is discontinuous, therefore it requires a capacitor to supply the ac current while maintaining the dc input voltage. use low esr capacitors for the best performance. use ceramic capacitors with x5r or x7r dielectrics for best results because of their low esr and small temperature coefficients. for most applications, use a 4.7 f capacitor. since c1 absorbs the input switching current , it requires an adequate ripple current rating. the rms c urrent in the input capacitor can be estimated with equation (2) and equation (3) : (2) the worse - case condition occurs at v in = 2v out , where: (3) for simplification, choose an input capacitor with an rms current rating greater than half of the maximum load current. the input capacitor can be electrolytic, tantalum , or ceramic. when using electrolytic or tantalum capacitors, add a small, high - quality ceramic capacitor (e.g . 0.1f ) placed as close to the ic as possible. when using ceramic capacitors, en sure that they have enough capacitance to provide sufficient charge in order to prevent excessive voltage ripple at the input. the input voltage ripple caused by capacitance can be estimated with equation (4) : (4) selecting the output capacitor the output capacitor (c2) maintain s the dc output voltage. use ceramic , tantalum, or low esr electrolytic capacitors. for best results, use low esr capacitors to keep the output voltage ripple low. the output voltage ripple can be estimated with equation (5) : (5) where l 1 is the inductor value and r esr is the equivalent series resistance (esr) value of the output capacitor. for ceramic capacitors, the capacitance dominates the impedance at the switching frequency , and the capacitance causes the majority of the output voltage ripple. for out r1 r2 v 1 0.81v ? ? f b r 1 r 2 c 3 v o u t ? ? ? ? ? ? ? ? ? ? ? ? in out in out load 1 c v v 1 v v i i 2 i i load 1 c ? load out out in in s in i v v v1 f c1 v v ?? ? ? ? ? ? ?? ? ?? out out out esr s 1 in s vv 1 v 1 r f l v 8 f c2 ?? ?? ? ? ? ? ? ? ?? ?? ? ? ? ?? ??
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 16 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. simplification , the output voltage ripple can be estimated with equation (6) : (6) for tantalum or electrolytic capacitors, the esr dominates the impedance at the switching frequency. for simplification, the output ripple c an be approximated with equation (7) : (7) the characteristics of the output capacitor affect the stability of the regulation system. the MPM3506A can be optimized for a wide range of capacitance and esr values . external bootstrap diode an external bootstrap diode can enhance the efficiency of the regulator given the following conditions: ? v out is 5 v or 3.3v ; ? t he d uty cycle is high: d= >65% in these cases, add an external bst diode from vcc to bst (see fig ure 6 ) . f igure 6 : optional external bootstrap diode to enhance efficiency the recommended external bst diode is in4148. pc b layout guidelines ( 8 ) efficient pcb layout is critical to achieve stable operation , esp ecially for input capacitor placement. for best results, refer to fig ure 7 and follow the guidelines below : 1. use a large ground plane connect ed directly to p gnd. if the bottom layer is ground plane, a dd vias near p gnd. 2. ensure t he high - current paths at gnd and v in have short, direct, and wide traces . 3. place the ceramic input capacitor close to v in and p gnd. 4. keep the connection of the input capacitor and v in as short and wide as possible. 5. place t he external feedback resistors next to fb . 6. keep the feedback net work away from the switching node. n ote : 8 ) the recommended layout is based on fig ure 8 and the typical application c ircuit s on page 1 8 . top layer bottom layer f igure 7 : recommended pcb layout out out out 2 in s1 vv v 1 v 8 f l c2 ?? ? ? ? ?? ? ? ? ?? out out out esr in s1 vv v 1 r f l v ?? ? ? ? ? ?? ? ?? in out v v m p m 3 5 0 6 a o u t a g n d s w o u t f b v c c n c b s t n c p g e n i n n c p g n d c 1 r 2 r 1 c 2 v o u t g n d v i n r 3 6 . 3 m m 6 . 7 m m p g n d v o u t g n d
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 17 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. d esign example table 2 is a design example following the application guidelines for the specifications below : t able 2 : design example v in 24 v v out 3.3 v i o 0.6 a the detailed application schematic is shown in fig ure 8 . the typical performance and circuit w aveforms have been shown in the typical performance characteristics section. for more device applications, please refer to the related e valuation b oard d atasheets.
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 18 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. typical application circuits f igure 8 : v out = 5v, i out = 0. 6 a f igure 9 : v out = 3.3v, i out = 0.6 a m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 1 4 . 3 k c 2 4 7 f c 1 4 . 7 f 5 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 2 2 p f p g m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 2 4 k c 2 4 7 f c 1 4 . 7 f 3 . 3 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 2 2 p f p g
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 19 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. f igure 10 : v out = 2.5v, i out = 0.6 a f igure 1 1 : v out = 1.8v, i out = 0.6 a m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 3 6 k c 2 4 7 f c 1 4 . 7 f 2 . 5 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 2 2 p f p g m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 6 2 k c 2 4 7 f c 1 4 . 7 f 1 . 8 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 3 2 v t r a n s i e n t : 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 2 2 p f p g
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 20 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. f igure 1 2 : v out = 1.5v, i o ut = 0.6 a f igure 1 3 : v out = 1.2v, i out = 0.6 a m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 9 1 k c 2 4 7 f c 1 4 . 7 f 1 . 5 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 3 0 v t r a n s i e n t : 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 2 2 p f p g m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 1 5 0 k c 2 4 7 f c 1 4 . 7 f 1 . 2 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 2 4 v t r a n s i e n t : 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 3 3 p f p g
MPM3506A C synchronous step - down module converter MPM3506A rev. 1.0 www.monolithicpower.com 21 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited . ? 2015 mps. all rights reserved. f igure 1 4 : v out = 1v, i out = 0.6 a m p m 3 5 0 6 a i n e n / s y n c v c c p g p g n d f b s w b s t v i n e n r 1 7 5 k r 2 3 0 0 k c 2 4 7 f c 1 4 . 7 f 1 v / 0 . 6 a c o n t i n u o u s : 4 . 5 v - 2 0 v t r a n s i e n t : 3 6 v v o u t a g n d o u t r 3 1 m r 4 1 0 0 k c 3 3 3 p f p g
MPM3506A C synchronous step - down module converter notice: t he information in this document is subject to change without notice. users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal r esponsibility for any said applications. MPM3506A rev. 1.0 www.monolithicpower.com 22 7/21/2015 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2015 mp s. all rights reserved. package information qfn - 19 (3 mm x5 mm x1.6 mm ) s i d e v i e w b o t t o m v i e w n o t e : 1 ) a l l d i m e n s i o n s a r e i n m i l l i m e t e r s . 2 ) s h a d e d a r e a i s t h e k e e p - o u t z o n e . a n y p c b m e t a l t r a c e a n d v i a a r e n o t a l l o w e d t o c o n n e c t t o t h i s a r e a e l e c t r i c a l l y o r m e c h a n i c a l l y . 3 ) l e a d c o p l a n a r i t y s h a l l b e 0 . 1 0 m i l l i m e t e r s m a x . 4 ) j e d e c r e f e r e n c e i s m o - 2 2 0 . 5 ) d r a w i n g i s n o t t o s c a l e . p i n 1 i d m a r k i n g t o p v i e w p i n 1 i d i n d e x a r e a r e c o m m e n d e d l a n d p a t t e r n p i n 1 i d 0 . 1 5 x 4 5 o t y p 0 . 1 5 x 4 5 o n o t e 2 n o t e 2

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