1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 a a b b c c d d e e f f g g h h i i j j k k l l m m n n o o p p q q on ilim1 ilim0 1 on off 4.35v-5.5v en3 1.9v-3.6v on off en2 opt 0 0 25ma off 1 enotg en1 on off 0 pulse skip mode1 (scl) 0 current limit 1 1a (10x) ilim1 1 ilim0 0 100ma (1x) switching regulator modes, dvcc = 0v 500ma (5x) 1 bucks 0.5ma (lo pwr susp) x ldo 0 1 input current limit settings 0 1.8v-3.4v 1v-1.8v ext ntc int 3.4v-5.5v 3.3v vfloat= 4.2v mode0 (sda) 1 0 1 1 400ma 400ma 1a leakage current must be < 50na unless noted: resistors: ohms 0402 1% 1/16w capacitors: uf 0402 10% 25v 1.25a 4.35v-5.5v non-operating fault tolerance to 30v continuous scl dvcc dc590 mode en 01 dc590 sda 1 dc590 0 burst 4.35v-5.5v hv buck interface dc590 interface 0.5a leakage current must be <400na a DC1334A wednesday, october 15, 2008 11 g. barbehenn g. barbehenn c ltc3576eufe: switching power manager with usb on-the-go + triple step-down dc/dcs size date: dwg no. rev sheet of title: contract no. approvals drawn: checked: approved: engineer: designer: technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed ciruit board layout may signifi cantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and supplied for use with linear technology parts. vout vout dvcc sda scl sda scl dvcc dvcc vout vout vout e7 ntc c10 10uf 0603 6.3v 20% e9 gnd r16 100k r11 0 jp10 usbmicro-ab j1 1 2 3 4 5 6 7 8 9 vbus d- d+ id gnd shgnd shgnd shgnd shgnd r19 20 5% u1 ltc3576eufe 24 37 23 2 4 14 13 38 1 12 11 21 28 27 9 7 19 8 22 10 26 16 6 25 17 5 20 29 30 31 32 33 34 35 36 3 39 vin2 ilim0 sw2 ldo3v3 ntc sda scl ilim1 clprog dvcc enotg rst3 acpr wall sw1 fb1 en3 vin1 en2 en1 vc vin3 ovsens fb2 sw3 ovgate fb3 prog chrg idgate bat vout vbus vbus sw ntcbias gnd r2 6.2k 0603 e10 vout3 r17 324k jp4 c16 22uf 6.3v 0805 20% c13 10uf 0603 6.3v 20% r4 5.1k 5% r18 1.05meg c5 0.1 16v r9 100k r25 1.0 5% r22 20 5% e11 gnd e18 gnd j5 sqt-108-01-f-d-ra 1 3 5 7 9 11 13 2 4 6 8 10 12 14 15 16 vout vout acpr pg sync dvcc sda vc/track gnd gnd wall shdn ilim hvok/init scl hvin r26 1.0k 5% 0603 tp1 d- e8 rst3 tp2 d+ tp5 smt e12 vout2 u2 24lc025i/st 256x8 1 6 3 4 5 2 7 8 a0 sclk a2 vss sda a1 wp vcc jp3 q1 si2306bds 3 1 2 r23 1.0 5% r8 2.00k r21 1.13meg r14 402k jp9 r15 20 5% r3 5.1k 5% e13 gnd tp6 smt e1 vusb tp3 id c17 1uf 10v r1 1.0 5% r12 0 e14 vout1 r13 324k l2 4.7uh 1098as-4r7m c8 2.2uf 6.3v 20% e2 gnd r5 0 jp6 r10 100k c15 100uf 6.3v 1206 20% jp5 c3 0.1 16v l4 3.3uh lps4018-3r3mlc jp1 c6 27pf 50v 5% e17 chrg r7 3.01k r20 324k c9 18pf 50v 5% c11 2.2uf 6.3v 20% j4 df3-3p-2dsa 1 2 3 bat gnd ntc-ext c7 22uf 0805 6.3v 20% e4 gnd e21 ldo3v3 l1 2.0uh 1098as-2r0m usbmini-ab j2 1 2 3 4 5 6 7 8 9 vbus d- d+ id gnd shgnd shgnd shgnd shgnd j3 hd2x7 1 3 5 7 9 11 13 2 4 6 8 10 12 14 + + + + + + + + + + + + + + jp8 l3 4.7uh 1098as-4r7m e5 clprog e20 gnd c4 0.1uf 16v tp4 smt c12 12pf 50v 5% c14 2.2uf 6.3v 20% jp2 c2 22uf 6.3v 0805 20% e15 gnd c1 4.7uf 1206 50v e6 prog e3 vbus e19 vout jp7 q2 si2333ds 1 3 2 d1 chrg r24 1.0 5% r6 5.1k 5% e16 bat
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