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1 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 general description the aat4681 smartswitch enables separate stand-alone ac adapter and pmu usb chargers to independently con - trol a single low r ds(on) power mosfet between battery and system power output. a 20v version is available for multi-cell li-ion applications and a 6v version is available for single-cell li-ion applications. the two p-channel power mosfets required in umpc applications for controlling independent charger ics can be consolidated to a single device, saving space and reducing cost. the single 20m? p-channel device in the aat4681/-1 has four times lower r ds(on) than the equiva - lent path resistance formed by two series devices. ordering options are available for multi-cell and single- cell li-ion versions. for the single-cell application, a 6v device with dual independent gate control is available. for 2-cell and 3-cell applications a 20v ordinary p-channel device is available in the same package and pin configu - ration. both devices are available in the tdfn-10l 3mm x 3mm package. features? multi-cell 20v device and single-cell 6v device ? dual independent gate controls ? independent linear regulator and smps power switch states are maintained ? 3mm x 3mm tdfn-10l package ? temperature range: -40c to 85c applications ? smart phones ? sub notebooks ? smartbooks ? netbooks ? ultra-mobile pcs ? wireless media devices typical application gq gnd ds gc stat ds g 20m gate control from stand-alone charger gate control from pmu usb charger statusoutput linear/power- switch gate control linear control detection systempower r1 v io n/c n/c ds gc n/c ds g gate control from stand-alone charger system power 30m aat4681, aat4681-1 aat4681-2 discontinued downloaded from: http:///
2 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 pin descriptions pin # pin name function aat4681/-1 aat4681-2 1, 2, 3 s s source connection. 4 gq n/c gate control from pmu charger. 5 gc gc gate control from stand-alone charger. 6 stat n/c open drain status output. stat signal high means qc is on and stat signal low means gq is on 7 gnd n/c ground connection 8, 9, 10 d d drain connection. pin configuration tdfn33-10l (top view) aat4681/-1 aat4681-2 s gc gq ss dstat gnd dd 3 4 5 1 2 8 7 6 10 9 s gc n/c ss dn/c n/c dd 3 4 5 1 2 8 7 6 10 9 discontinued downloaded from: http:///
skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 3 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications 1 absolute maximum ratings are those values beyond which the life of a device may be impaired. 2. pulse width <300s, duty cycle <1%. 3. t j is calculated from the ambient temperature t a and power dissipation p d according to the following formula: t j = t a + p d ja . 4. thermal resistance is specified with approximately 1 square inch of 1 oz. copper. absolute maximum ratings 1 symbol description value units aat4681, aat4681-1 v d , v s drain or source voltage to gnd 6.0 v v stat stat to gnd -0.3 to 6.0 v i stat stat current 10 ma v gc , v gq gate voltage levels to gnd -0.3 to 6.0 v i d continuous drain current @ t a = 85c aat4681 7 a aat4681-1 5 i dm pulsed drain current 2 10 a i s continuous source current (source-drain diode) -1.5 a aat4681-2 v ds drain-source voltage -20 v v gs gate-source voltage 12 v i d continuous drain current t a = 25c 4.0 a t a = 70c 3.2 a i dm pulsed drain current 24 a i s continuous source current (source-drain diode) -1.5 a thermal characteristics 3 symbol description value units t j operating junction temperature range -40 to +125 c t lead maximum soldering temperature (at leads, 10 sec.) 300 c tdfn33-10l thermal impedance ja maximum junction-to-ambient thermal resistance 50 c/w p d maximum power dissipation 4 2 w discontinued downloaded from: http:///
4 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 1. where v sys is the greater of v d or v s . 2. pulse width < 300s, duty cycle < 1%. electrical characteristicst a = -40 c to +85 c, unless otherwise noted. typical values are at t a = +25 c. symbol description conditions min typ max units aat4681/-1 v sys input voltage range 1 1.8 5.5 v v uvlo under-voltage lockout for v sys < v uvlo , gc active 1.4 v i q quiescent current v d = 4.2v, t j = 55c 3.6 15 a i dss drain-source leakage current v gs = 0v, v ds = C5.5v, t j = 55c -5 a r ds(on) p-channel on resistance 2 v d = v gc = 4.2v, v gq = gnd, i d = 5a, t a = 25c aat4681 18 25 m? aat4681-1 23 28 v hys gq-gc transition hysteresis 300 mv t gsw gq-gc transition delay slew rate of qg @ 1ms 10 s v statlow stat logic output low i stat(sink) = 1ma 0.025 0.4 v i stat(sink) stat logic high leakage current v stat = 5.5v, v gc = 5.5v, v gq = gnd 0.005 1 a aat4681-2 bv dss drain-source breakdown voltage v gs = 0v, i d = -250a -20 v r ds(on) drain-source on-resistance 2 v gs = -4.5v, i d = -4.0a 27 40 m? i d(on) on-state drain current v gs = -4.5v, v ds = -5v (pulse) 2 -24 a v gs(th) gate threshold voltage v gs = v ds , i d = -250a -0.8 v gq ? gc gate drive voltag e gqgc 0v v hy s discontinued downloaded from: http:///
skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 5 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications aat4681/-1 typical electrical characteristics hysteresis, gq ramp time = 2.5ms (s = 5.5v; gc = 0.5v; r stat = 5k; v io = 5.5v) time (100s/div) voltage (100mv/div) gqgc stat hysteresis, gq ramp time = 500s (s = 5.5v; gc = 0.5v; r stat = 5k; v io = 5.5v) time (20s/div) voltage (100mv/div) gqgc stat timing (s = 5.5v; gc = 0.5v; gq ramp time = 2.5ms; r stat = 5k; v io = 5.5v) time (1ms/div) voltage (1v/div) gqgc stat shutdown current vs. shutdown voltage v sd (v) i sd (a) 00 .1 0. 20 .3 0. 40 .5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 v g = 0.85v v g = 0.90v v g = 0.95v v g = 1v v g = 1.05v v g = 1.1v v g = 1.2v v g = 1.5v v g = 2v v g = 3v v g = 4v v g = 5v v g = 6v r ds(on) vs. i sd i sd (a) r ds(on) (m) 22 .5 33 .5 45 4.5 12 14 16 18 20 22 24 26 28 v g = 2v v g = 3v v g = 4v v g = 5v v g = 6v on-resistance vs. junction temperature (v s = 6v; i ds = 5a; puse it s; dut ce t j ( ormaie r ds(o (m? -5 00 50 100 -2 52 57 5 150 125 0.60 0.80 1.00 1.20 1.40 1.60 1.80 discontinued downloaded from: http:///
6 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 aat4681/-1 typical electrical characteristics on-resistance vs. gate voltage g c (v s = 6v; v gq = 0v, i ds = 5a; pulse width < 300s, duty cycle < 1%) v s - v gc (v) r ds(on) (m) 00 .5 11 .5 22 .5 33 .5 44 .5 56 5.5 10 15 20 25 30 35 40 45 50 on-resistance vs. gate voltage g c v s = 6v, v gc = 0v, i ds = 5a; pulse width < 300s, duty cycle < 1%) v s - v gq (v) r ds(on) (m) 00 .5 11 .5 22 .5 33 .5 44 .5 56 5.5 10 15 20 25 30 35 40 45 50 on-resistance vs. gate voltage g c v s = 6v, v gq = 0v, i ds = 7a; pulse width < 300s, duty cycle < 1%) v s - v gc (v) r ds(on) (m) 00 .5 11 .5 22 .5 33 .5 44 .5 56 5.5 10 15 20 25 30 35 40 45 50 on-resistance vs. gate voltage g q v s = 6v, v gq = 0v, i ds = 7a; pulse width < 300s, duty cycle < 1%) v s - v gq (v) r ds(on) (m) 00 .5 11 .5 22 .5 33 .5 44 .5 56 5.5 10 15 20 25 30 35 40 45 50 discontinued downloaded from: http:///
skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 7 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications aat4681-2 typical electrical characteristics output characteristics -v ds (v) -i ds (a) 00 .5 11 .5 2 v g = -1.5v v g = -2v v g = -2.5v v g = -3v v g = -3.5v v g = -4v v g = -4.5v v g = -5v v g = -6v v g = -7v v g = -8v v g = -9v v g = -10v 0 1 2 3 4 5 6 7 8 9 transfer characteristics -v gs (v) -i d (a) 01 23 45 0 2 4 6 8 10 12 14 125c25c -50c on-resistance vs. drain current -i d (a) r ds(on) () 02 46 8 0 0.02 0.04 0.06 0.08 0.1 v g = -2.5v v g = -4.5v on-resistance vs. gate-source voltage -v gs (v) r ds(on) () 02 46 81 0 0 0.02 0.04 0.06 0.08 0.1 on-resistance vs. junction temperature (v gs = -4.5v; i d = -5.9a) t j (c) normalized r ds(on) (m) -5 00 50 100 -2 52 57 5 150 125 0.60 0.80 1.00 1.20 1.40 1.60 1.80 threshold voltage vs. junction temperature t j (c) v gs(th) variance (v) -5 00 50 100 -2 52 57 5 150 125 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 discontinued downloaded from: http:///
8 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 aat4681-2 typical electrical characteristics gate charge -q g , charge (nc) -v gs (v) 0246 81 01 21 41 61 82 02 22 42 6 0 2 4 6 8 10 source-drain diode forward voltage v sd (v) i s (a) 00 .2 0. 40 .6 0. 81 .0 1.2 0.1 1 10 100 t j = 150c t j = 25c discontinued downloaded from: http:///
skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 9 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications * switch to gq when gq > gc even if qc is not equal to zero. functional block diagram gq gn d d s gc stat sw bs w co mp uv lo s en s sw b sw gc (gate control from stand-alone charger) gq (gate control from pmu usb charger) p-ch gate voltage control source vin vin gc linear 0v gc 0v* linear gq 0v 0v gc loat loat gc discontinued downloaded from: http:///
10 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 figure 1: aat4681ide evaluation board figure 2: aat4681ide evaluation board top side layout. bottom side layout r1 s 1 s 2 d 8 d 10 d 9 s 3 gq 4 gn d 7 gc 5 stat 6 tdfn3 3-10l u1 aat4681ide gq so u rce gc st at gn d dra in vi o figure 3: aat4681ide evaluation board schematic. discontinued downloaded from: http:///
skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 11 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications 1. xyy = assembly and date code. 2. sample stock is generally held on part numbers listed in bold . 3. t a = 85c. 4. t a = 70c. 5. the leadless package family, which includes qfn, tqfn, dfn, tdfn and stdfn, has exposed copper (u nplated) at the end of the lead terminals due to the manufacturing process. a solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. ordering information package marking 1 continuous drain current (a) part number (tape and reel) 2 tdfn33-10l j8xyy 7.0 3 aat4681ide-t1 tdfn33-10l f5xyy 5.0 3 AAT4681IDE-1-T1 tdfn33-10l y4xyy 3.2 4 aat4681ide-2-t1 skyworks green? products are compliant with all applicable legislation and are halogen-free. for additional information, refer to skyworks de?nition of green? , document number sq04-0074. package information tdfn33-10l 5 to p view 3.00 0.05 3.00 0.05 pin 1 dot by marking pin 1 identification r0.200 bottom view 1.70 0.05 0.500 bs 0.23 0.05 0.0 0.05 2.0 0.05 side view 0.05 0.05 0.203 r 0.75 0.05 all dimensions in millimeters. discontinued downloaded from: http:///
12 aat4681 da ta sheet 20m p-channel smartswitch for umpc battery charging applications skyworks solutions, inc. ? phone [781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202246b ? skyworks proprietary information ? products and product information are subject to change without notice. ? september 11, 2012 copyright ? 2012 skyworks solutions, inc. all rights reserved. information in this document is provided in connection with skyworks solutions, inc. (skyworks) pr oducts or services. these materials, including the information contained herein, are provided by sky works as a service to its customers and may be used for informational purposes only by the customer. skyworks a ssumes no responsibility for errors or omissions in these materials or the information contained her ein. sky- works may change its documentation, products, services, speciications or product descriptions at any time, without notice. skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conlicts, incompatibilities, or other dificulties arising from any fut ure changes. no license, whether express, implied, by estoppel or otherwise, is granted to any intellectual prope rty rights by this document. skyworks assumes no liability for any materials, products or informatio n provided here- under, including the sale, distribution, reproduction or use of skyworks products, information or ma terials, except as may be provided in skyworks terms and conditions of sale. the materials, products and information are provided as is without warranty of any kind, whether e xpress, implied, statutory, or otherwise, including fitness for a particular purpose or use, merchantability, performance, quality or non-infringement of any intellectual proper ty right; all such warranties are hereby expressly disclaimed. skyworks does not warrant the accuracy or completeness of the information, text, graphics or other items contained within these materials. skyworks shall not be liable for any damages, in- cluding but not limited to any special, indirect, incidental, statutory, or consequential damages, i ncluding without limitation, lost revenues or lost profits that may result from the use of the materials or information, whether or not the recipient of materials has been advised of the possibility of such damage. skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, o r other equipment in which the failure of the skyworks products could lead to personal injury, death , physical or en- vironmental damage. skyworks customers using or selling skyworks products for use in such applicatio ns do so at their own risk and agree to fully indemnify skyworks for any damages resulting from such improper use or sale. customers are responsible for their products and applications using skyworks products, which may dev iate from published speciications as a result of design defects, errors, or operation of products ou tside of pub- lished parameters or design speciications. customers should include design and operating safeguards to minimize these and other risks. skyworks assumes no liability for applications assistance, custom er product design, or damage to any equipment resulting from the use of skyworks products outside of stated pub lished speciications or parameters. skyworks, the skyworks symbol, and breakthrough simplicity are trademarks or registered trademarks of skyworks solutions, inc., in the united states and other countries. third-party brands and names are for identiication purposes only, and are the property of their respective owners. additional information , including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by refere nce. discontinued downloaded from: http:///

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