for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642,or visit maxim's website at www.maxim-ic.com. general description the max8610?ax8613/max8611v are highly efficient complete power-supply solutions for digital still cam- eras (dscs) and digital video cameras (dvcs). seven internal-mosfet dc-dc converters provide up to 95% efficiency and generate all critical power supplies in dsc systems. they also feature true shutdown , as well as internal compensation to minimize external component count. one additional converter operates with an external mosfet for optimum design flexibility. in all, eight converter channels include: synchronous-rectified step-up with true shutdown. two synchronous-rectified step-down (max8611/ max8613/max8611v) or step-up (max8610/max8612) converters power dsc system, i/o, and afe blocks. low-v out (down to 1v), synchronous-rectified step-down to power a dsp core. high-output-voltage step-up for ccd bias. transformerless inverter for negative ccd bias. high-output-voltage step-up for white leds, oled display, or other output. auxiliary dc-dc boost (max8611/max8610/ max8611v) or inverting (max8612/max8613)controller. the max8611/max8613 /max8611v operate in 1-cell lithium-ion (li+) and dual-battery (li+ and 2 aa) designs.the max8610/max8612 operate in 2 aa designs. applications features ? 95% efficient synchronous-rectified dc-dcs ? 90% efficient boost-buck operation ? 85% efficient dc-dcs for ccd, lcd, wled,and/or oled ? auxiliary power for motors(max8610/max8611/max8611v) ? internal compensation ? true shutdown step-up converters ? overload protection ? soft-start for controlled startup current ? low-dropout (100% duty cycle) step-downs ? regulated current for up to 6 white leds ? open-led overvoltage protection ? transformerless inverting converter for ccd ? adjustable 1mhz to 2mhz switching frequency ? 3% frequency accuracy ? 1 a shutdown supply current ? ccd voltage sequencing ? voltage tracking for core and logic(max8611/max8613/max8611v) ? compact 48-pin, 6mm x 6mm thin qfn package max8610?ax8613/max8611v 8-channel pmics for digital camera power supplies ________________________________________________________________ maxim integrated products 1 ordering information 19-3617; rev 6; 7/07 evaluation kit available part temp range pin-package pkg code max8610 etm+** -40 c to +85 c 48 tqfn-ep* 6mm x 6mm t4866-1 max8611 etm+ -40 c to +85 c 48 tqfn-ep* 6mm x 6mm t4866-1 max8611vetm+** -40 o c to +85 c 48 tqfn-ep* 6mm x 6mm t4866-1 max8612 etm+** -40 c to +85 c 48 tqfn-ep* 6mm x 6mm t4866-1 max8613 etm+** -40 o c to +85 c 48 tqfn-ep* 6mm x 6mm t4866-1 true shutdown is a trademark of maxim integrated products, inc. selector guide and pin configuration appear at end of datasheet. * ep = exposed paddle. + denotes lead-free package. ** future product?ontact factory for availability. ccdbst step-down aux ledbst v su 5v v core 1.4v motor 5v ccd -7.5vup to 6 white leds input 1.5v to 5.5v onsuonsd onmonbst onaux step-up dc-dc v main 3.3v v afe 3.4v batt ccd +15v ccdinv onled seqccd onafe rext main dc-dc afe dc-dc max8611 oninv typical operating circuit dscs and dvcs pdas and mp3 players abridged downloaded from: http:///
max8610?ax8613/max8611v 8-channel pmics for digital camera power supplies ______________________________________________________________________________________ 21 figure 2. max8611 (li+ or combination li+/2 aa input) typical application circuit. the main (m) and afe outputs operate as step - down converters and are powered from the step-up (su) for efficient boost-buck operation. max8611 lxinv 21 ref r7604k r8100k 25 fbinv l510 h gd pvbst v batt v batt swbst lxbstfbbst 26 r91.3m r10100k l64.3 h d2 lxafe pvafe 8 97 pgafe fbafe r12 100k r11243k l3 3 h rext r18 100k 39 pvled v batt swled lxled pg2 fbhled fblled d3 c13 10 f l7 10 h r16 100k r151.6m drvaux c22*1 f c21*1 f v batt fbaux r131.1m r14100k c141 f d4 l8 10 h ccaux r20 100k c182.2nf pvinv 20 v batt c251 f ref 40 c15 0.22 f batt v batt (3v to 5v) l1 1 h lxsupvsu su 4544 fbsu r1 402k r2 100k r3 232k r4 100k r5 40.2k r6 100k pgsu v su 5v lxm pvm l2 3 h v m 3.3v fbmpgm pvsd lxsd l4 4.7 h fbsdpgsd c10 10 f v sd 1.4v v afe 3.4v v ccdbst 14v v ccdinv -7.4v pg1 ep gnd onsuonm onsd onled onbst seqccd onafe onaux 46 3 v batt 1536 22 27 10 14 1 12 6 17 16 13 2 45 48 42 43 47 41 18 24 v aux 23 19 37 38 32 33 34 35 11 31 30 29 28 d1 c222 f c1 22 f c422 f c3 22 f c5open c6 22 f c910 f (2x) oninv c11 10 f c19open c12 10 f c20open c7 22 f c8open c241 f v su c23 1 f v su r1710 white leds v led * c21, c22 are optional. abridged downloaded from: http:///
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