 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?d n b y 2 6 1 3 74[ ]1 <? ?+? 5 / 6 w? 3 9 wr??1 * ? -? ? *??r??1| 9 6 &u?? 1 / 7 w|r ?1} i 3 6 b| ?? h??]?? ??? yr 9?@ ??8b|]k ? ? ? n b y 2 6 1 3 7 -0 -j]? ? 3 1 1 l i {? 3 n i { *? ? ? h n b y 2 6 1 3 7|8b4[s ??j]? f ? ? ? hj]? n p t g f u|t0? +? ? 6?? hw ?? 6?? z?? 6 ? t -?r - tra 5 g= z? ? e d . e d? hyj? ?le y+" ]? ?a 5= z| ? r n b y 2 6 1 3 7t j ?? ?r [ ?? i 0 ? ?"|'r? -?r??? *? [??]? ? ? ?t ja? y+" z ? i h-ra? a? y+" ? - 4? ( 6? ? iu?? n b y 2 6 1 3 7g ? 9 .&2z| 4 n n y 4 n n 2 5[ m u e g o . f q v? n b y 2 6 1 3 7 ?+? . 5 1 d? , 9 6 d k1 t *?2 . 5 1 d? , 2 3 6 d? t *? n b y 2 6 1 3 7 d? j| ? ?0 .? ? ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` b ?? ^ ? m d e u w| ($ ?? c ? 0 5? ?? y m e t q?? ???1 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` v ? 5 / 6 w? 3 9 w t 6 w ! 2 1 &r??1 *? ? 1 / 7 w? ) 1 / 9 6 ! y ! w j o * -r ? 3 1 1 l i {? 3 n i { - ? h ? -????? ? ? ?? -tw? ?"|???2e ?? y+ " ? a? y+" ? ? ? 8b|]k ?? ? 2 & t|?1 ?e ? ] ? ? ? 8b4[s ??j]? f ? ? ? le y+a 5? ? ? z ? ? ?? ?r 'r????]? ? 6 & t|'r? ?" n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ________________________________________________________________ maxim integrated products 1 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` [ m|? ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ? g? 19-4108; rev 2; 9/10 ta5 n b y j nu+^at ?|ia n b y j ny !i|@?|?j t?%? |g ? ??@ia| -@?a ? t !ig??i?? \$?|eiv?l n b y j n |^at ? ?s ? e- ["d|k ?t ?? 7 n b y j n|? d i j o b / n b y j n . j d / d p n - ? e? , -,? ) q c * 0 o ] s p i t*e| v? * f q ! > ! a fd n b y 2 6 1 3 7 dn @?d? 2 4 5 *ep 13 11 10 lx dl drv v cc en lim MAX15026 1 + 14 dh in 312 bst pgood 69 gnd comp 78 rt fb tdfn (3mm x 3mm) top view *ep = exposed pad. part temp range pin-package MAX15026betd+ -40c to +85c 14 tdfn-ep* MAX15026cetd+ -40c to +85c 14 tdfn-ep* MAX15026batd+ -40c to +125c 14 tdfn-ep* MAX15026catd+ -40c to +125c 14 tdfn-ep* n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v in = 12v, r rt = 27k , r lim = 30k , c vcc = 4.7f, c in = 1f, t a = -40c to +85c (MAX15026b/cetd+), t a = t j = -40c to +125c (MAX15026b/catd+), unless otherwise noted. typical values are at t a = +25c.) (note 2) stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note 1: dissipation wattage values are based on still air with no heatsink. actual maximum power dissipation is a function of heat extraction technique and may be substantially higher. package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four-layer board. for detailed information on package thermal consid- erations, refer to china.maxim-ic.com/thermal-tutorial . in to gnd ...............................................................-0.3v to +30v bst to gnd ............................................................-0.3v to +36v lx to gnd .................................................................-1v to +30v en to gnd................................................................-0.3v to +6v pgood to gnd .....................................................-0.3v to +30v bst to lx..................................................................-0.3v to +6v dh to lx ................................................-0.3v to (v bst + 0.3v) drv to gnd .............................................................-0.3v to +6v dl to gnd ................................................-0.3v to (v drv + 0.3v) v cc to gnd ...............-0.3v to the lower of +6v and (v in + 0.3v) all other pins to gnd.................................-0.3v to (v cc + 0.3v) v cc short circuit to gnd ...........................................continuous drv input current.............................................................600ma pgood sink current ............................................................5ma continuous power dissipation (t a = +70c) (note 1) 14-pin tdfn-ep, multilayer board (derate 24.4mw/c above +70c) ..............................1951mw operating temperature range MAX15026b/cetd+ .........................................-40c to +85c MAX15026b/catd+ .......................................-40c to +125c junction temperature ......................................................+150c storage temperature range .............................-60c to +150c lead temperature (soldering, 10s) .................................+300c soldering temperature (reflow) .......................................+260c parameter symbol conditions min typ max units general 4.5 28 input voltage range v in v in = v cc = v drv 4.5 5.5 v quiescent supply current v fb = 0.9v, no switching 1.75 2.75 ma shutdown supply current i in_sby en = gnd 290 500 a enable to output delay 480 s v cc high to output delay en = v cc 375 s v cc regulator 6v < v in < 28v, i load = 25ma output voltage v cc v in = 12v, 1ma < i load < 70ma 5.0 5.25 5.5 v v cc regulator dropout v in = 4.5v, i load = 70ma 0.28 v v cc short-circuit output current v in = 5v 100 200 300 ma v cc undervoltage lockout v cc_uvlo v cc rising 3.8 4.0 4.2 v v cc undervoltage lockout hysteresis 400 mv error amplifier (fb, comp) fb input voltage set-point v fb 585 591 597 mv fb input bias current i fb v fb = 0.6v -250 +250 na fb to comp transconductance g m i comp = 20a 600 1200 1800 s amplifier open-loop gain 80 db amplifier unity-gain bandwidth capacitor from comp to gnd = 50pf 4 mhz v comp-ramp minimum voltage 160 mv comp source/sink current i comp v comp = 1.4v 50 80 110 a n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? _______________________________________________________________________________________ 3 parameter symbol conditions min typ max units enable (en) en input high v en_h v en rising 1.14 1.20 1.26 v en input low v en_l v en falling 0.997 1.05 1.103 v en input leakage current i leak_en v en = 5.5v -1 +1 a oscillator switching frequency f sw r rt = 27k 540 600 660 khz 1mhz switching frequency r rt = 15.7k 0.9 1 1.1 mhz 2mhz switching frequency r rt = 7.2k 1.8 2.0 2.4 mhz switching frequency adjustment range (note 3) 200 2000 khz rt voltage v rt 1.19 1.205 1.22 v pwm ramp peak-to-peak amplitude v ramp 1.8 v pwm ramp valley v valley 0.8 v minimum controllable on-time 65 100 ns maximum duty cycle f sw = 600khz 85 88 % minimum low-side on-time r rt = 15.7k 75 110 150 ns output drivers/driver supply (drv) drv undervoltage lockout v drv_uvlo v drv rising 4.0 4.2 4.4 v drv undervoltage lockout hysteresis 400 mv low, sinking 100ma, v bst = 5v 1 3 dh on-resistance high, sourcing 100ma, v bst = 5v 1.5 4.5 low, sinking 100ma, v bst = 5.2v 1 3 dl on-resistance high, sourcing 100ma, v bst = 5.2v 1.5 4.5 sinking 4 dh peak current c load = 10nf sourcing 3 a sinking 4 dl peak current c load = 10nf sourcing 3 a dh/dl break-before-make time dh at 1v (falling) to dl at 1v (rising) 10 (18, note 5) ns dl/dh break-before-make time dl at 1v (falling) to dh at 1v (rising) 10 (20, note 6) ns soft-start soft-start duration 2048 switching cycles reference voltage steps 64 steps current limit/hiccup current-limit threshold adjustment range cycle-by-cycle valley current-limit threshold adjustment range valley limit = v lim /10 30 300 mv electrical characteristics (continued) (v in = 12v, r rt = 27k , r lim = 30k , c vcc = 4.7f, c in = 1f, t a = -40c to +85c (MAX15026b/cetd+), t a = t j = -40c to +125c (MAX15026b/catd+), unless otherwise noted. typical values are at t a = +25c.) (note 2) n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 4 _______________________________________________________________________________________ parameter symbol conditions min typ max units lim reference current i lim v lim = 0.3v to 3v (note 4) 45 50 55 a lim reference current tempco v lim = 0.3v to 3v 2300 ppm/c number of consecutive current- limit events to hiccup 7 events soft-start timeout 4096 switching cycles soft-start restart timeout 8192 switching cycles hiccup timeout out of soft-start 4096 switching cycles peak low-side sink current limit sink limit = 1.5v, r lim = 30k (note 4) 75 mv boost boost switch resistance v in = v cc = 5v, i bst = 10ma 3 8 power-good output pgood threshold rising 90 94.5 97.5 % v fb pgood threshold falling 88 92 94.5 %v fb pgood output leakage i leak_pgd v in = v pgood = 28v, v en = 5v, v fb = 1v -1 +1 a pgood output low voltage v pgood_l i pgood = 2ma, en = gnd 0.4 v thermal shutdown thermal-shutdown threshold temperature rising +150 c thermal-shutdown hysteresis temperature falling 20 c electrical characteristics (continued) (v in = 12v, r rt = 27k , r lim = 30k , c vcc = 4.7f, c in = 1f, t a = -40c to +85c (MAX15026b/cetd+), t a = t j = -40c to +125c (MAX15026b/catd+), unless otherwise noted. typical values are at t a = +25c.) (note 2) note 2: all devices are 100% tested at room temperature and guaranteed by design over the specified temperature range. note 3: select r rt as: where f sw is in hertz. note 4: t a = +25c. note 5: 10ns for MAX15026b, 18ns for the MAX15026c. note 6: 10ns for MAX15026b, 20ns for the MAX15026c. r 17.3 10 f 1x10 )x(f rt 9 sw 7 sw = + ? () 2 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? _______________________________________________________________________________________ 5 efficiency vs. load current (MAX15026b/c) MAX15026 toc01 load current (a) efficiency (%) 810 6 2 4 10 20 30 40 50 60 70 80 90 100 0 012 v out = 3.3v v out = 1.2v v out = 5v v out = 1.8v efficiency vs. load current (v in = 12v, v cc = v drv = 5v) MAX15026 toc02 load current (a) efficiency (%) 10 6 8 4 2 012 v out = 3.3v v out = 1.2v v out = 5v v out = 1.8v 10 20 30 40 50 60 70 80 90 100 0 v out vs. load current MAX15026 toc03 load current (a) % output from nominal 10 68 4 2 012 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0 -1.0 v cc vs. load current MAX15026 toc04 load current (ma) v cc (v) 80 20 40 60 5.230 5.235 5.240 5.245 5.250 5.255 5.260 5.265 5.225 0 100 v cc line regulation MAX15026 toc05 v in (v) v cc (v) 25 20 15 10 5 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 4.3 030 5ma 50ma v cc vs. temperature MAX15026 toc06 temperature ( c) v cc (v) 60 35 10 -15 5.238 5.240 5.242 5.244 5.246 5.248 5.236 -40 85 switching frequency vs. resistance MAX15026 toc07 resistance (k ) switching frequency (khz) 80 60 40 20 500 1000 1500 2000 2500 0 0 100 switching frequency vs. temperature MAX15026 toc08 temperature ( c) switching frequency (khz) 60 35 10 -15 500 1000 1500 2000 2500 0 -40 85 r rt = 7.2k r rt = 15.7k r rt = 27k r rt = 85k supply current vs. switching frequency MAX15026 toc09 switching frequency (khz) supply current (ma) 1000 10 20 30 40 50 60 70 80 90 0 100 10,000 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v (v in = 12v, t a = +25c. the following tocs are for MAX15026b/c, unless otherwise noted.) (see the circuit of figure 5.) n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 6 _______________________________________________________________________________________ ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v )? * (v in = 12v, t a = +25c. the following tocs are for MAX15026b/c, unless otherwise noted.) (see the circuit of figure 5.) lim reference current vs. temperature MAX15026 toc10 temperature ( c) lim reference current ( a) 60 35 10 -15 10 20 30 40 50 60 70 0 -40 85 sink and source current-limit thresholds vs. resistance (r ilim ) MAX15026 toc11 resistance (k ) current-limit thresholds (v) 60 50 40 30 20 10 -0.3 -0.2 -0.1 0 0.1 0.2 -0.4 070 sink current-limit source current-limit load transient on out MAX15026 toc12 400 s/div ac-coupled v out 200mv/div i out 10a 1a startup and disable from en (r load = 1.5 ) MAX15026 toc13 4ms/div v out 1v/div v in 5v/div pgood 5v/div startup rise time (MAX15026b) MAX15026 toc14 1ms/div v in 5v/div v out 1v/div power-down fall time MAX15026 toc15 4ms/div v in 5v/div v out 1v/div startup rise time (MAX15026c) MAX15026 toc16 1ms/div v in 5v/div v out 1v/div 0v output soft-start with 0.5v prebias at no load (MAX15026c) MAX15026 toc17 1ms/div v in 5v/div v out 1v/div 0.5v output prebias output short-circuit behavior monitor output voltage and current MAX15026 toc18 4ms/div 500mv/div 0 v out i out 20a/div 0 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? _______________________________________________________________________________________ 7 1in 2v cc 3 pgood 4en 5 lim 6 comp 7fb 8rt 9 gnd 10 drv 11 dl 12 bst 13 lx 14 dh ep ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` [ m? [ m a ? ?|r?g?"c?? 2 g|?#?? s j ol 5? h o e ?+? 6 w ! 2 1 &?? { j o? w d d 6 / 3 6 w#v?1ri w d d ? e s w q?? '"c?? 5 / 8 g|? f t s?#?? s w d d l 5? h o e2i?"m ?? |??vi w d d ? h y ??? '"c?? 3 / 3 g| ?#?? s w d d l 5? h o e ' ? 5|?? ?rgj]? s q h p p e? o??@???1 ?3?i|'r? { f o? h o e ?r { f o? w d d ?u? ?+ f o -? ??]?2 v w m p ?r? " ?? m j n [ h o e? . { ? ? 4 1 n w ! ) s m j n > ! 7 l *? 4 1 1 n w ! ) s m j n > ! 7 1 l * *? ? " ?"l e ?? ?? ?" ] j w?r? sw?? e {? d p n q [ g c? . t d p n q [ h o e? .l e w? ] j ( cr? s g c {?r [ h o e? .|? j1? 1 / 7 w ) 1 / 9 6 ! y ! r??1 * *?? . ?r ?1?l e ??r?1 ] j il? ? r?? s u? h o e? . { ? ? 3 1 1 l i {? 3 n i { *???il? h l e ?? ? h ] j ? q????1 e s w] {?] ? ? |? ?'"c?? 3 / 3 g|?#?? s e s wl 5? h o e ! )l e ?ob? 5 * ? ?q?r e m?1? e s w?1? h o e? .??? v w m p -| e m?? ? =?? {? c t u [ m y? . {? 2 1 1 o g|?#?? j]? { s m y {?? | ~ m y+ ?q?|??? +?4[ n p t g f u | ' ??? ??1 ]| 6?r? ?q?r e i?1? m y?1? c t u?1? .??? v w m p -| e i?? a fd] {? h o e s f q {?? h o e|m a ?5?2 2zv? s f q+?| h o e {? { n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 8 _______________________________________________________________________________________ ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ? vd oscillator dc-dc and oscillator enable logic v ref rt en enable comparator osc_enable bandgap ok generator v cc uvlo drv uvlo thermal shutdown and ilim current gen in uvlo bgap_ok bgap_ok en_int vl_ok vdrv_ok shutdown vin_ok v ref vin_ok vin_ok i bias v bgap bgap_ok bgap_ok v drv vin_ok v bgap lim in v cc internal voltage regulator main bias current generator v ref = 0.6v v bgap = 1.24v bandgap reference ck enable g m soft-start/ soft-stop logic and hiccup logic v ref hiccup ck enable dh_dl_enable v ref v ref ck ck dh_dl_enable hiccup timeout fb1 dac_vref pwm comparator ramp generator sink current-limit comparator pgood comparator valley current-limit comparator pwm pwm control logic boost driver high- side driver low- side driver ramp gatep hiccup timeout hiccup lim/20 lim/10 comp bst dh lx drv dl gnd fb pgood gnd MAX15026 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? _______________________________________________________________________________________ 9 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` .? n b y 2 6 1 3 74[ ]1 <? ?+? 5 / 6 w? 3 9 wr??1 * ?? r??1| 9 6 &u?? 1 / 7 w| -r?1 - } i 3 6 b| ?? h|???1 ? 6 / 1 w? 6 / 6 w *?r???# ) w j o * -?? 4 / 4 w n b y 2 6 1 3 7 -0 -j]? ? 3 1 1 l i {? 3 n i {| *? ? ? h - ?| ? h?? ??? h ? v n b y 2 6 1 3 7 ??8b4[s ?w ? j]? f ? ? @ ?i h ? hj]? n p t g f u|t0? +?? 6?? h" ?"?1 -0 -? ? a?? *?? 4 1 n w? 4 1 1 n w@&/ ? rtw?- ]? ? n p t g f u| s e t ) p o * 2t$ ? |l0 ? 6 1???j] 6 ? -?r - tra 5 g= z? ?j]? hyj? ?le y +" ]? ?a 5= z| ? r n b y 2 6 1 3 7t j ? ? ?r [ ?? i 0 ? ?"|'r? -?r??? *? [??]? n b y 2 6 1 3 7 ??]k ???????? ?? ?rr 9?i????1 - ???|?? ??1 k ?? ?'ac" v 4? ? a? -?|? i ?-ra?? k ? ? ? - ?4[s n p t g f u [ n p t g f u| ? -?|? i ?iu , 2 6 1 d n b y 2 6 1 3 7 ?2 4?? ? h e d . e d ! q x n <? n b y 2 6 1 3 7 ]1 <?g q x n?1 y+ <? 1? )l e ? vd * <? 5w??j]w?z?? ?+? h [r m d if h 1 a "m| v] k t? 9m? d p n q[ m ? j??1? e? ? |? t d p n q[ m |?10 - q x n w [s? ?4 9?] ?| ? ? o ?x n p t g f u ?uiu ]8|4 9 tui"m4 9? n p t g f u e .? ? s?? ? 2e| ? ? n p t g f u ?? o ?x n p t g f u % ? ? s? ] ; 9@| ?4 6r ? ? - h i? ? -??| ?? " ?" )?l e " ? 5 ) m j n * ] j * n p t g f uy ?2 ?| ?? ? ? n p t g f u ?t02'? ? s ? ] ] 6 / 3 6 w#v?1 ]#v?1 ) w d d *?] ? [? n p t g f u q? *a? 6 / 3 6 w??gj] 6 w ! 2 1 &???1 - s j o w d d {u??1"mr??1 ) w j o *? 3 9 w g 2 g|?#?? s j ol 5? h o e4 g 5 / 8 g| ?#?? s#v?1|r ) w d d *l 5? h o e w d d 1 ]0?? 2 3 6 n wp%i w j o m? 6 / 6 w w d d ? 6 / 3 6 w n b y 2 6 1 3 7 r? 1??? 5 ?? 5 -? w d d ?? 4 / 7 w )?o? * ]#v?1 5 1 1 n w| v w m p ? - 4 ???? 0?? ? ] w d d #v?1 -? j d i 8 1 n b|? ? ? ?q? ? j] ????2 ??| j] ? ? -6j] ? |? s ? n p t g f u ?q??? r|? ?? ?+? h? 7 1 1 l i { ?? w? 2 9 o d|] n p t g f u ) w h t > 6 w *?|q?? ? ) 2 9 o d y 7 1 1 l i { * > ! 2 2 n b] <?? 5? r|? ? 6 n b ! )"m? *p % -?j] ?|? ?? (70 C (2 x 11) C 5)ma ? 43ma n p t g f u ?q? ) e i e m * e i [ e mq? 3 -? ??q?m?a o ?x ? h n p t g f uu? ?+?? ? e m? q?|f p*? e i q?|fp? ?w )j <?l . ? 4?0 t?0 *8b?l? 5 *? e i [ e mr @ 4?? n p t g f ur]? ?b~| n p t g f u t0p% ?? 5???? e m ?q? ? q?4 -2 ?? ) e m *q?? e i ?q? ?? n b y 2 6 1 3 7 q?|8b?l <? ??'y4 n p t g f u ?z ??0 ?+mm ]? ?? .? w |t i h? ?i?8b?l 6?? 5u? ?+- e m [ e i q?u n p t g f u ?? .???? ?? 5 ? e ? + ? 9?0 5@? wm| ? 6?? 5 ? n p t g f u| w h t ?m j 2? n p t g f u ?/ ??'a& q|#' ? ]?"c 4[s | ?? n p t g f u t?|? f ? ? ? ]? ?t? rg s e t ) p o * ? 2 )?o ? *] o| - s e m - #?q?u??3 m y ? ? p? e .??? 4[s n p t g f u| ' ?u ?? .@? ? ]???t0? ?e? 4? e m? o ?q??? ) c t u * [] 1 ] c t u [ e i? .|] - s ?q?g s u w j o 2?? n p t g f u|t0 ?| .??1 c t u [ m y? . {| ??? -? n p t g f ut0e . ? ?q? y|?1 i n p t g f u? m y ???1iu??? sw ????? ?? w w|? wi m y ?? ???3 w e s w [ c t u? . {|] 1 s ????d?l bg? || ??? 2? 8i| ??? 'r? ) f o *?? [?+? q? f o? ?3 n b y 2 6 1 3 7m ?0 -?[ ? 9m| ?e?1'?? -??s?| ? .? 3 1 5 9 2e j& h??? ??1| 2 0 7 5- 3?? r?1 f o[ m| ] ??3 s ??+? -?[ ]?? 9m| ?e?1? +? -r? ? ? n p t g f uq?l ed 2 s f o {? w d d s*?? ??? f o ?? i|0? <? ?" - s f o+ v w m p -r? t v| ] q h p p er ??]? ??? -|i? iu ?? ?" n b y 2 6 1 3 7 ??r ?2? ? ?"?@? 5 1 : 7 ?2 e ? i?m|?v ?? ?{? y ? ?"?? +??? 5 1 : 7 ?2e? ??r ? h h??b???| 9 2 : 3 ?2 e? ?w+??8b ??? .? r???| -|?? ? y - ?"? ?? ??, ) q h p p e * n b y 2 6 1 3 7t : ? ?? ??, w? * < ?|r?1@ 6??? ? ?" t ?? g c?1| : 5 / 6 & q h p p e? 'r?j]? o? ??? 3 q h p p er -2a?" 3 n b|? i ?r? u*a?1?| : 5 / 6 & q h p p e? ? ?3 ) ? *i ?r?1??*a?1? | : 3 & q h p p e s$???3 le ? q h p p e ? ???3 ?u???r i n b y 2 6 1 3 7 ? ?????r e i [ e m ? ? 't y -ra?? e i 0 e m +? w+ ?u q x n w ? q x n tis?? | ? e?1? g c?12? s ? ? q x n t ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 10 ______________________________________________________________________________________ " ? 5 ) m j n * " ? 5' ?? [a?? 6? ? s? n p t g f u|t0? + 6 ? h??'? #| 6 ? " ? 5 ??tw? -2?s t *? n p t g f ut0? |$ ?" ?" -0 - m j n |j]? ? ?| ] ? ??y4t0? | n p t g f u ?+ )?l ?? ?? ?" ] j * ?? ?" | ? *?? 4 1 n w? 4 1 1 n wb? ? 7 l ? 7 1 l ? n p t g f u y| ?? ?"? q?? m j n[ m?1| 2 0 2 1 a?? ?" ? m j n[ m?1| 2 0 3 1 i? ? 6 ? @ &?? n p t g f ut0e . m y ???? h o e ?? "?c?+?? n p t g f u t0 ?| ?e ? +? 6?g s mt - ?? ?" n b y 2 6 1 3 7 sy ?d| q x n2e 5?2e ] ?? ? ? <? ]?] ?e?1?2 <? -ju?" ? [a 5? ?| ??z?= z <?+ q ? ? 1 mm ]? ?a 5= z|? ?f? - - ]?? ?a"?2 ]? -? | -v - ? h ??le y+aa 5 = z?] ?e?1?? a ??u? ?e?1@& ? ? n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 11 v cc b cd e 2048 clk cycles 2048 clk cycles f g hi a uvlo en v out dac_vref dh dl uvlo undervoltage threshold value is provided in the electrical characteristics table. internal 5.25v linear regulator output. active-high enable input. regulator output voltage. regulator internal soft-start and soft-stop signal. regulator high-side gate-driver output. regulator low-side gate-driver output. v cc rising while below the uvlo threshold. en is low. v cc en v out dac_vref dh dl a symbol definition b v cc is higher than the uvlo threshold. en is low. en is pulled high. dh and dl start switching. normal operation. v cc drops below uvlo. v cc goes above the uvlo threshold. dh and dl start switching. normal operation. en is pulled low. v out enters soft-stop. en is pulled high. dh and dl start switching. normal operation. v cc drops below uvlo. c d e f g h i symbol definition d 2 / ! ?? 0?? ? n b y 2 6 1 3 7 i m y?1 ? h o e a?? "? -0 - * <? n p t g f u y|1 ]#?? n p t g f ut0e .? +? n p t g f u y|1 ] - ? m j n[ m?1| 2 0 3 1 ?? n p t g f u? ? s-r0 - n p t g f u| ? ) ?'a?" e i [ e m ?y? ?w ?%f q d cz ? 2i? ? ?y ? ? m y [ h o e|? 6?g sga|? {# s n b y 2 6 1 3 7??? # ? n p t g f u|??g a 6? { 1+2'z# y ?? n p t g f u| 6 le y+ - ? ? ? w?|a 5e . ttt -= zle y+ - ? ? ? ]? ? r? k? ? iu ?? " ? "| w+|?@&??iu ?"| w+| ? ??? ) 1 1 1 * +?? + ?? " h? @? k s ? ? 2 2 2 ! ) 8(?+ ? *? *d|? ??? n b y 2 6 1 3 7 +? e m [ e iq?@? w 5 1 : 7 2e )le ? *??e .le y +? ?? 5??i ?+? 1?? n b y 2 6 1 3 7'] 1?? ) v w m p *? 5 * < w d d ?1 v w m p? 5 ? ? n b y 2 6 1 3 7? w d d ?1?? w v w m p ? + v w m p ?"? 5 w 5 1 1 n w| ? - 4????1?? 0 ]? ? h ? 1??e . e m [ e i ???3 ? w+ z -? ? n b y 2 6 1 3 7|z -? ? ?"? ? ri h ? - , 2 6 1 d ?t ? h@3 e m [ e i????3- ' h |f ? ]? 3 1 d ? t s(? h ?+z ?e . ? s ? ???? ?? m e p?1| r2 ? h2 e i 0 e m -m|q?? r ? z -? ?p%? j e ? r )?l ? r ] j *2 ??u? ?+ ? y|z -? ? ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` bg? ?ir??1 *? n b y 2 6 1 3 7 <? ? ?+? i 3 9 w|r??? @ - s ]1? 1 / 7 w"c?1t ) w p v u 0 w j o *j"? "?t0 .? ??u?| ?? h q x nw+? 1t b o ] e h? | u p o ) n j o * ? 2 3 6 o t g t x ? ? h]?? i {? +?g|t ?1y x2? h " t 2 ]??i|4 9? ? ?z7| - ]? ? h t ]?r??1 w j o "m?1t ?"m4 9 ) e n b y * ?? | w e s p q 2 5? 9?0 5| ? 1 ]? [ |t j4[s ? [ q d c? w e s p q 3 5?0 5 ? 1 ]? [|t j ? [ q d c? ? |b x?d h@ ? ?? ?2{u w q| ?~?0b ??r?1 0 -?r [ g cu h o e? . {? j1 -2?? n b y 2 6 1 3 7 |r?1 ) ed 3 *? 2 l [ 6 1 l ? .? s 3 ?+ s 2 ? | w g c ? 1 / 6 : 2 w )?l f m f d u s j d b m d i b s b d u f s j t u j d t - * w p v u ?? 1 / 6 : 2 wu ) 1 / 9 6 y w j o *? . ? s 2 ? j j j w?? e? |?+? +g j j j w?? e )l e j j j w?? e ) ed 5 * ] j *bi??m j j j w?? e 6 s 2 s 3 |? ? rr v v out fb 12 1 = ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? v v d dv (1d)v v out in max max drop2 max drop1 in < + ? ? v v tf out n on(min) sw i > ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 12 ______________________________________________________________________________________ n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 13 ?? ? h ? h g t x -0 - s u h o e? .|? ?? g t x s s u ? .| ?? | g t x ]?? l i { s s u ]?? l ???? 7 1 1 l i { | ? h -' s s u > 3 8 / 3 l ? h ? |? ?'? [r??cp%? w ? h y?? [ j 3 s? r ]?c]? r ??? [ ? r ? ? | ] n b y 2 6 1 3 7 ?+|? ? x e flk? ? ? ) m *? ? [? ) j t b u * [? ? ) s e d *? ? ??e i?? y y c ? [? 3 ?? | ? ) m j s * m j s?m s n t? p% j 3 s ? r mgm|? v y{? m j s??o= z? ?| v? o? ?u? t?b? m j s ?| j 3 s ? r wm? 4 1 & ) m j s > 1 / 4 *| y y?f? 3 ?? ? -2??a? r? .iu w q|sa m ?0 - ? hr??1r?12 ?? | m j si?? ???,? | w j o w p v u [ j p v u ??o? )- c?o h? ? i h * ? h? s s u ?? )?l ?? ? h ] j * @yg i|? ? - ? ??a?ti h ?r s w?|? ? ? ?c;?a ]??t?? w | y?? ??~?0bc ]?i h 1 a w |? ? ?? s n t? | ]? i h ? ?? r? ?8i?ab ?? -?|? ? ? ?? [? ) j t b u *? ? 2i??? ??"m" ? ) j d m ) n b y * * y ? ["m" ?? ? n p t g f ut0? m j nl ? ) j m j n *|?? ? ]?d h? ? [? ) j t b u *bg+i?? i sat 1.35 x i cl(typ ) | j d m ) u z q * ?" ????o?p 2 / 4 6t j 3 6 &| s e t ) p o * [ 2 1 &| m j n ?e? ?$ ? -? y4 ?| ?? v x% g ) ?? d p j m d s b g u| n t t 2 3 8 9 . 2 5 3 n m2 4 e||?? * ?? ?? ?" ?? s? n p t g f u|t0? s e t ) p o * +? 6?? h"c 6 ?"? ? 2i?"?= z? n p t g f u|t0? ?}?g|"m ?? ? | ?? -0 - j m p b e ) n b y * ?w?f? |{u ??f? ? ??e . 6 ?"?1 ) w j u i *|"c? bm?? n p t g f u|?1? | s e t ) p o * ?? n p t g f u|t0? ]??o ? -? n p t g f u|k ?t ?? "m s e t ) p o * vr i lir ith ds on max load max > ? ? ? ? ? ? ? (, ) ( ) 1 2 l vvv vf i lir out in out in sw out = ? () r 17.3 10 f 1x10 )x(f rt 9 sw 7 sw = + ? () 2 fb r 1 out r 2 MAX15026 d 3 / ! -r?1 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 14 ______________________________________________________________________________________ ? ?s? ?"? m j n [ h o e? . { j]? ) s m j n *? ?" ) w j u i * [ s m j n ? .| ?? | s m j n |]?? l w j u i |]?? n w s m j n ? ?? 7 l u 7 1 l ? .b|? ?"? 4 1 n w u 4 1 1 n ws" b'??? 2 &|? 2' ? ?"??|?"c r??? r? if?? - ]?-??a?| y?? @ ]? ? 5? | [r??1?fr???? o ] ? ? 5?|?f? ) j s n t *g?+ ?? ir??1??r?1 y? ) w j o > 3 w p v u * j s n t ?? "m?% j s n t ) n b y * > j m p b e ) n b y * 0 3??kb r??? e ; ??? )?# ? ]? t p t . d p o * p? ; ???|v -4? ?? ???? |m ?{? j? ]??t -? y ) t? *c? ?? f t s|??@ r?? r??| f? lk???? f t s [ ??1z klk l0u??vr?f?1 [~?0b r?f? y] j ? tr??@? w$ ?[? |1 ]2 ? t ??|? ??? f t s[?|1 ]? v ripple ? v esr + v q ?? f t s [r?? p?|r?1?f?? | j q . q ?? ?f? y y? )l e ? ? ] j * zk ?+8 ]?*??|? "?k?b0 -?o t ? e? 5 ?r?b{u 6?i?r?? x ?~?0b|g? p ? ~$e .r?1???|?? ? ?r?? f t s ?i ? ) f t m * ? ?e .?r?? ? ? ??? <?2 ?m|4 9 ?r0b0b . ) u s f t q p o t f *s ?t | 5r q )l w? ] j * r?? f t s? | v1 ]?? f t m? |1 ] ) w f t m * 2 ?? 9? ? ? ?e .t??1 ] g? f t s| ? 0 ?? ????#??@ '?e? ??~? ? [?1?f|v'-#?? [@ ? ? ? ]? f t m s"mr?1???? ? ?? ?| *? -2 ?+ ? ?e .?g| f t s f t m2 ???? | j t u f q ? ? ? u t u f q ? ? ?|? . u s f t q p o t f ? <?|0b .@& g p ? ]?d ? h w? n b y 2 6 1 3 7 ? ] kt 9m ? -2 ? 9 m| ($r? [r ?rj]? hw?j]w? ? ?? ? ? r if? h05r??? ?t e b -g f t s| ?? ?????a g % 0|b -2?r? ? f t s| ??? t?# ?? n b y 2 6 1 3 7| ? h???r'?#? ?? ????? h2 xr?f? h?a2 ? h?t|g -? 8 ]? 9m|cg s? h 2 y{?g| r q [$?? ? esr v i c it v esl v esr step out step response q = = = e esl step step response o t i t f ? 1 3 v i esr v i cf i vv esr p p q pp out sw pp in o = = = ? ? ? ? 8 u ut sw out in fl v v ? ? ? ? ? ? ? ? ? ? ? ? ii vvv v rms load max out in out in = ? () () r v a lim ith = 10 50 ? ]8|w?? e o ?i???| ? [ ??]?d? h2 r??| o ? c v d lt |r | m d if??? h[? ?k ??? r??[? ?? | f t s?r??|?i 5]?d? h ) g p * ??? 5d?? 2 ! ) 1 e c * b s??? 2 0 2 1| ? h2? ? w?|]?d? h?e? ]? ( c 5| l0 ??4 9? ? ??;??? x e y ??ve ? 2 * ]?d? h g p |$$?c? 2 9 1 ?? 5|$?? ??m? 3 * ?$$? . 2 9 1 )d? ? * d?c? 2 pg$?? ?? ?m? 7 1 2#? - #| 5?? v [|~?0b ? +'? ??? t w f t s|r ??? ? m d ? ? []?d? h g p ? .0? ?? f t s? | ? g [ p ) g q p = ! g [ p = ! g p *z?= zbg j j w?? e ) q j ? . jo * ? +'?# t? f t sr ???0? ? ?]? d? h g p ?? f t s? | ? t g q p = g p = g [ p z?= zbg j j j w?? e ) q j e ? . j .? j o * j j w?? e ) ed 4 * ? + g [ p ?? g p c { g q p ?? f t s ?|$? ? -2??]?d? h ? m d if?? | ?k ? ?|$??p% -g ??|? ? ? ?? | j j w?? e? 5??d 4| s g [ d g [? ? |? ? ) g [ 2 * j j w?? e| s g d d g ? ?? ) g q 2 * ? ?? l0r ??f| mt ??m e[? d 4| j j w?? e|? h?? 2 * ? t qt? m d if ( c j12 $ ? 5 ?|??;]?d? h |d ) h b j o n p e *? | w j o ? ?r??1 w s b n q ? t q?|s? mt w g c 5 g cr??1??? )?o?? 1 / 6 : 2 w?l f m f d u s j d b m d i b s b d u f s j t u j d t - * w p v u 5?g|r?1 ? 9m?|? |d ) h b j o f b *?? gain ea = g m x r f | h n 5? 9m| kt 5d? g p ?d? 9md|? b?? 2 ?+?? p%? s g ? 3 * ? 1 / 8 6 y g q p ?? |? ? g [ 2 )??? m d ?? *? f rc f z ff po 1 1 2 075 = = . r vflv v v g esr f ramp o out out fb in m = () 2 v v esr fl v v gr in ramp o out fb out mf = () 2 1 gain gain mod ea = 1 gain v v esr fl v v mod in ramp o out fb out = () 2 f f o sw 10 f esr c zo out = 1 2 f lc po out out = 1 2 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 15 n b y 2 6 1 3 7 d g ? 4 * ? g q 2 > 1 / 6 y g t x 9? ? ?? )?q ? ? h g t x |?f *m ?+ d d g ? j j j w?? e ) ed 5 * ? +?'|r???? f t s ??? t?#?? f t s [?| ?? h0? ? *]?d? h ) g p *z?= zn @g j j j w? j j j w? ??2? h ?? [ y ?? y |? ? ) g [ 2 g [ 3 * -?? m d if[?| ?k ??? f p1 = 0 g q 2 ? ? ) j *[? ????? r ?1?? ? ? f t s ? ) g [ p *| ??? g q 3 -??? ? ? t j| ?r?fq ?? g q 4 ?q ? ?r?f ? [ ????b'$?? ? y?? g p ? i? s g ? ? 3 0 h n [ s 2 s 3 |@ ? s j bm? 2 0 h n e s??0|[? 2 9 1 $$?y?? n @g e[?? ? 2 * s g 2 1 l ? 1 / 9 ! y ! g q p 9?? ? ) g [ 2 *? p%? 3 * ? t q? m d if ( c j12 $ |? 5 ?|??;]?d? h |d ) h b j o n p e * ?? ? 9m?|? |d ) h b j o f b *?? gain ea = 2 x f o x c 1 x r f gain v v fl c mod in ramp o out out = 1 2 2 () c rf f fpo = 1 208 . f rc f z ff po 1 1 2 08 = = . f r cc cc p f fcf fcf 3 1 2 = + f rc p ii 2 1 2 = f rc f crr z ff z ii 1 2 1 1 2 1 2 = = + () c rf c cf fsw f = ? 1 1 c rf f fpo = 1 2075 . ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 16 ______________________________________________________________________________________ v ref r 1 v out r 2 g m r f comp c f c cf d 4 / ! j j w?? e v ref g m r 1 r 2 v out r i comp c i c cf r f c f d 5 / ! j j j w?? e ? [? 9m? g p |d? ? 5d b?? 2 ?+?? p%? d j ? 4 * ? + g q p = g p = g [ p = g t x 0 3 '? ?? ) g q 3 *? ? g [ p z 5dn#|fd y ? 1 e c] ?d? h ? a t${3? ? . 3 1 e c 0 ?? | & ]?u 2 0 3| ? h? +r??g? f t s ??? j - z?= z?? g q 3 > ! g [ p ? +'?#?? ???| f t s ? g [ p j -?? 2 0 3| ? h2? t? g q p = g p = g t x 0 3 = g [ p z?= z? ?y l0]?d? h |$?? ?b s? ?? ) g q 3 * 9?? ? |? h ?? -2?? ? 6 y g p z?]?d? h ) g p * [?|$?? ? ? 2 2 '?? f p2 = 5 x f po a{u g q 3 ? t - s j ? 5 *? 1 / 3 y g p t g q p | w?|? h 9?? ? ) g [ 3 * ?+ s 2 ? 6 * ? 2 0 3| ? h 9?? ?? ) g q 4 *@ d d g ? 7 * s 3 ? n p t g f u? n b y 2 6 1 3 7 ]1 <? -q? y j] ] ?3 <?| o ?x n p t g f u? % n p t g f u| flkt j? ? t0? ) s e t ) p o * * ? "m ' .??1 ) w e t ) n b y * * ? "c ?"?1 ) w u i ) n j o * * ? ?? w ) r h * ? (6r?? ) d s t t * ? ? r y o ?x n p t g f u?? ] ?3 <?o ?? w h t > 5 / 6 w i?t0? xg? ? y{"mi hb? t? r???or??1 ? r| n p t g f u i?"?r??1|t? ry - n p t g f u v?|2 z ?" ts|2z?"%j bi?"mr? ?1|t? r ? ? ry v?| ?? t|2z?"i? e m ?q? ?q?? n p t g f u?i? n p t g f ut0 ? | e w 0 e uy 0 -? n p t g f u| ' . ??? o? n p t g f u| ?z5? c?t0| fp iq?? v] m e p?1 ? epq? ? r? | ? r?? ? n p t g f u' ?? w ???%?z w d d 2} y q?| ? y ' h -z? p drive = v cc x q g_total x f sw | r h ` u p u b m ? y j] n p t g f u| ?? w? [ r v vv r fb out fb 21 = ? c c frc cf f sw f f = () ? 205 1 . r fc r zi i 1 2 1 2 = ? r fc i pi = 1 2 2 c vflc vr i ramp o out out in f = () 2 v v fc l in ramp ooutout 1 2 2 () gain gain mod ea = 1 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 17 n b y 2 6 1 3 7 ??? n b y 2 6 1 3 7g ?? 5 ?t0 n p t g f u??| . ??1?? o ?x n p t g f u ? - ? ?+i?8 i| ??? ) ?ob? 5 || d c t u *? | r h ? n p t g f u| ?? w w c t u ? n p t g f uq?t0? ????|?1$ ? ? d c t u ? 8i| w c t u ) ?? w c t u > 2 1 1 n w? 4 1 1 n w *' ?q??1y ] ? ? =??b? ? f t s ?#??n @|"c???? 2 1 1 o g ? r h|"m ? rs ?- `u2? 1|z 2 1t z s ? h| v? q d c ?5 a z? 9? 0 h v?? r2| ? h ) q u *s ???|? )?l ?ob ? 5 *% ? h -0 -+ ? p t = (v in - v cc ) x i ldo + v drv x i drv + v cc x i in | j m e p ?]?1? j e s w ? e s wq??? r |??? j j o ? n b y 2 6 1 3 7|??? yt j j e s w l e ?o ?+v ??d 6||?ob? 5 j m e p > j e s w , ! j j o & w e s w > ! w d d ?2 q u > ! w j o y ! ) j e s w , ! j j o * ?+ e `t? = z? t j = t a + (p t x ja ) | k b ? v?| ?u 1|z q u ? h? r2 | ? h u b ? 1t ? ?$b| k f e f d*e ) k f t e 6 2 . 6 [ k f t e 6 2 . 8 *???? 5?| 2 5[ m u e g o v? k b ? 3 5 / 5 d 0 x? +# ?+ h k f e f d*e ?| h$? wm ?? {? ?j +t ) u d * e ? m ? -0 -+ ?? t j = t c + (p t x jc ) ? 2 5[ m| u e g o v? -? 9 / 8 d 0 x+? k d z j +u 1|z ) d b *s ?z ?? q d cu 12z hp% s u e g o v?| a fd f {u wm a | ?5 l??e?0 -? 5?2z- 'j +u 1|z "c -' a wm| ?5l? v? w?| q d ct q d cz ? s?? ? h? h 9??? 5??? ? h |? ?0 -??[# t ?5l? s? 5???| { h o e#z ?io2 ]?g s0x?|?1 ] ??# [ ?#b? -a?5 {?z# i h?? ?+? ?g w | ?5 q d c ) 3 p { t ? *?e? i h s n b y 2 6 1 3 7 # 4[s n p t g f u 9?" q5? a?@i? m y h o e e i [ e m[#a& q'? c - ; {?? [??? .|g s#g] ? | ?5? v? ????| y ? hyj???| ? h? hl0 ?m2 1 { n b y 2 6 1 3 7| {??? h ? p wc| y ?3 a s ?? {u h o e@ s+? w j o l 5??w?? h ( c j1? 5 w d d ?? s u? 2 m j n? | {? { m y [ h o eg l f m w j o 6? {?4[s n p t g f u ?r " 2#i?" t ?? ) c t u m y e i [ e m *|[#be - e | y l? ) s u d p n q m j n [ g c * s??2 h o e?l |? h [ ( c? h # h 9?i? g c [w?? e| z#l? -c2 4?[? c q v bst g bst = ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 18 ______________________________________________________________________________________ n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 19 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?ob? 5 r5 10k r3 4.02k r1 11.8k dh lx q2 l1 1.4 h bst dl enable pgood v in drv gnd rt in v cc pgood lim en comp fb r7 4.02k r6 15.4k r4 27k r1* *r1 is a small-value resistor to decouple switching transients caused by the mosfet driver (2.2 ). c6 2.2 f c1 330 f panasonic eeefcie331p 4.5v to 28v c10 4.7 f c7 68pf c9 0.022 f c8 68pf c11 1500pf c4 470 f sanyo 4c54701 c5 22 f c3 0.47 f q1 ( ) v out coilcraft mss1278-142ml MAX15026 on-semiconductor ntmfs4835ntig ( ) on-semiconductor ntmfs4835ntig 5 / 6 w? 3 9 w]?? ?+ d 6?,? ?+? 5 / 6 w? 3 9 w]??|?ob? 5 d 6 / ! w j o > ! 5 / 6 w? 3 9 w n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? 20 ______________________________________________________________________________________ ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?ob? 5 )? * 5 / 6 w? 6 / 6 w]?? ?+ d 7?,? ?+? 5 / 6 w? 6 / 6 w]??|?ob? 5 d 7 / ! w d d > ! w j o > ! w e s w > ! 5 / 6 w? 6 / 6 w r1 r3 r lim dh lx l1 bst dl enable pgood v in drv gnd rt in v cc pgood lim en comp fb r2 rt c1 4.5v to 5.5v c4 c3 c2 q2 c f1 c bst q1 v out MAX15026 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ______________________________________________________________________________________ 21 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?ob? 5 )? * r1 r3 r lim dh lx l1 bst dl enable v aux 4.5v to 5.5v pgood v in +12v drv gnd rt in v cc pgood lim en comp fb r2 rt c1 c4 c3 c2 q2 c f1 c bst q1 v out MAX15026 ze 6 w?? ?+ d 8?,? , 2 3 w??q?j] n p t g f u2 r? , 6 w??? h ?|?ob? 5 d 8 / ! ?+? 6 w ze?? n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` v?g? ??" | v?jpg? [ fdz ?? china.maxim-ic. com/packages ??@ v? i|| , $ t . ?-, s p i t? v?d| -t :y4|?? oc v?d? v ?? s p i t?? ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` `g? process: bicmos 22 ______________________________________________________________________________________ v? o v? i jp s fdz s 14 tdfn-ep t1433+2 21-0137 90-0063 n b y 2 6 1 3 7 ??tc?a 5 / 6 w? 3 9 w q ?+ *?| e d . e d4[ c v d l <? n b y j ny n b y j n?-2j|? \? 5' ? y ?? - n b y j n? ?? \ . ??? \0| ? ??- t ? [ ?|z ? maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ______________________ 23 ? 2010 maxim integrated products n b y j n 5 n b y j n ! j o u f h s b u f e ! q s p e v d u t - ! j o d / |?* 0 5/08 1 5/09 1C4, 10, 15, 19 2 9/10 1C6, 10 n b y j n ? ?0 ? 9 4 3 9g( ?v i 2 1 1 1 9 4 ? e? ?? 9 1 1 ! 9 2 1 ! 1 4 2 1 ? ?? 1 2 1 . 7 3 2 2 6 2 : : ^? 1 2 1 . 7 3 2 2 6 3 : : ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?? ?% ?? s ???e ? ? ? "?t ? ? ? ?d ? g? b c t p m v u f ! n b y j n v n ! s b u j o h t f m f d u s j d b m ! d i b s b d u f s j t u j d t ?? ??, ) q h p p e * ] j2 ?ob? 5 ? n b y 2 6 1 3 7 d? ? ? ?d ? g? f m f d u s j d b m ! d i b s b d u f s j t u j d t ?o ?+v [ ?u???r ] j |
Price & Availability of MAX15026
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |