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general description the max20303 evaluation kit (ev kit) is a fully assembled and tested circuit for evaluating the max20303 wearable charge-management solution with i 2 c compatibility for feature-rich, low-power wearable applications. the device includes a linear battery charger, smart power selector, two ultra-low quiescent current buck regulators, a buck- boost regulator, a boost regulator, a charge pump, two low-dropout (ldo) linear regulators, three led current sinks, five gpio pins, and an lra/erm compatible haptic driver with internal pattern storage. refer to the max20303 ic data sheet for detailed infor - mation regarding the operation and features of the device. features rohs compliant proven pcb layout fully assembled and tested i 2 c serial interface 319-100070; rev 0; 9/17 ordering information appears at end of data sheet. detailed description of hardware the max20303 ev kit evaluates the max20303 wear - able charge-management solution. the default settings of the ev kit differ from other versions of the ic to allow for flexible evaluation. refer to tables 1 through table 3 for descriptions of the default settings and the readback values of the direct registers and ap registers on reset. evaluates: max20303 max20303 evaluation kit
maxim integrated 2 table 1. register bit default values register bits default value pfn2pud_cfg hi-z pfn1pud_cfg hi-z writeprotect disabled ilimblank disabled ilimcntl 500ma mtchgtmr 60min fchgtmr 600min pchgtmr 240min tshdntmo 10s chgautore auto-restart vpchg 3.15v ipchg 5% ifchg chgdone 30% ifchg chgen enabled chgautostp enabled batrechg 50mv batreg 4.20v coldlim 1129.41mv hotlim 35.29mv bstiset 200ma bstiadpten enabled bstfaststrt 100ms bstfetscale disabled bstvset 12v buck1fetscale disabled buck2fetscale disabled bstseq boosten after 100% bsten disabled buck1vset[5:0] 1.2v buck1izcset 20ma buck2vset 1.8v buck2izcset 30ma buck2iset 150ma buck1iset 150ma bootdly 120ms buck2sftstrt 50ms soft-start buck1sftstrt 50ms soft-start register bits default value buck2en disabled buck1en disabled ldo1md ldo ldo1en disabled ldo2md ldo ldo2en disabled passdiscena enabled ldo2vset 3.0v stayon enabled sfoutvset 3.3v ldo1vset 1v sysminvlt 3.6v sfouten chgin cpvset 6.6v cpen disabled cpseq cpen after 100% pwrrstcfg 0b0110 buck2seq buck2en after 100% buck1seq buck1en after 100% bbsten disabled ldo2seq ldo2en after 100% ldo1seq ldo1en after 100% thmen enabled bbstvset 4v bbstiset 100ma batocthr 1000ma bbstripred lower ripple bbstind 4.7h bbstseq bbsten after 100% emfen enabled hptsel lra alcmod enabled hptsysuvlo 3v hptdrvtmo disabled ilimmax 1000ma t chgin_shdn 120c www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 3 see table 3 through table 7 for pin descriptions of the three connectors j1-j5. table 2. i 2 c direct register default values table 3. read opcode default values register name default value 0x00 hardwareid 0x02 0x01 firmwareid 0x02 0x0b systemerror 0x00 0x0c intmask0 0x00 0x0d intmask1 0x00 0x0e intmask2 0x40 0x0f apdataout0 0x00 0x10 apdataout1 0x00 0x11 apdataout2 0x00 0x12 apdataout3 0x00 0x13 apdataout4 0x00 0x14 apdataout5 0x00 0x15 apdataout6 0x00 0x17 apcmdout 0x00 0x18 apresponse 0x00 0x19 apdatain0 0x00 0x1a apdatain1 0x00 0x1b apdatain2 0x00 register name default value 0x1c apdatain3 0x00 0x1d apdatain4 0x00 0x1e apdatain5 0x00 0x20 ldodirect 0x00 0x21 mpcdirectwrite 0x00 0x28 hptramaddr 0x00 0x29 hptramdatah 0x4a 0x2a hptramdatam 0x74 0x2b hptramdatal 0x63 0x2c ledstepdirect 0x00 0x2d led0direct 0x00 0x2e led1direct 0x00 0x2f led2direct 0x00 0x30 hptdirect0 0x04 0x31 hptdirect1 0x00 0x32 hptrti2camp 0x00 0x33 hptpatramaddr 0x00 opcode register default value gpio_confg_read (0x02) apdatain0 0x00 apdatain1 0x00 apdatain2 0x00 apdatain3 0x00 apdatain4 0x00 gpio_control_read (0x04) apdatain0 0x00 mpc_confg_read (0x07) apdatain0 0x00 apdatain1 0x00 apdatain2 0x00 apdatain3 0x00 apdatain4 0x00 inputcurrent_confg_ read (0x11) apdatain0 0x06 thermalshutdown_ confg_read (0x12) apdatain0 0x03 opcode register default value charger_confg_read (0x15) apdatain0 0x3f apdatain1 0x73 apdatain2 0xc3 apdatain3 0x00 chargerthermallimits_ confg_read (0x17) apdatain0 0xa0 apdatain1 0xa0 apdatain2 0x05 apdatain3 0x05 chargerthermalreg_ confgread (0x19) apdatain0 0x00 apdatain1 0x00 apdatain2 0x1f apdatain3 0x00 apdatain4 0x00 charger_control_read (0x1b) apdatain0 0x03 www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 4 table 3. read opcode default values (continued) opcode register default value charger_jeitahyst_ controlread (0x1d) apdatain0 0x06 bst_confg_read (0x31) apdatain0 0x00 apdatain1 0x04 apdatain2 0x04 apdatain3 0x1c apdatain4 0x07 buck1_confg_read (0x36) apdatain0 0x04 apdatain1 0x90 apdatain2 0x16 apdatain3 0x00 apdatain4 0x07 buck2_confg_read (0x3b) apdatain0 0x00 apdatain1 0x80 apdatain2 0x00 apdatain3 0x00 apdatain4 0x07 ldo1_confg_read (0x41) apdatain0 0x00 apdatain1 0x14 apdatain2 0x07 ldo2_confg_read (0x43) apdatain0 0x00 apdatain1 0x15 apdatain2 0x07 chargepump_confg_ read (0x47) apdatain0 0x00 apdatain1 0x00 apdatain2 0x07 sfout_confg_read (0x49) apdatain0 0x05 monmux_confg_read (0x51) apdatain0 0x00 opcode register default value bbst_confg_read (0x71) apdatain0 0x00 apdatain1 0x02 apdatain2 0x0f apdatain3 0x50 apdatain4 0x07 hpt_confg_read0 (0xa1) apdatain0 0x0e apdatain1 0xd0 apdatain2 0x17 apdatain3 0x03 apdatain4 0x05 apdatain5 0x01 hpt_confg_read1 (0xa3) apdatain0 0x01 apdatain1 0x00 apdatain2 0x02 apdatain3 0x8b apdatain4 0x7f apdatain5 0x04 hpt_confg_read2 (0xa5) apdatain0 0x4c apdatain1 0x32 apdatain2 0xff apdatain3 0x04 apdatain4 0x24 apdatain5 0x06 hpt_sys_threshold_ confg_read (0xa7) apdatain0 0x8b hpt_lock_confg_ read (0xa9) apdatain0 0x00 hpt_emf_threshold_ confg_read (0xab) apdatain0 0x19 www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 5 table 4. connector j1 table 5. connector j2 pin signal description 1 gnd ground 2 chgin +28v/-5.5v protected charger input 3 sys system load connection 4 bat battery connection 5 thm battery thermistor measurement connection 6 tpu battery temperature thermistor measurement pullup. do not exceed 1ma load on tpu. 7 set external resistor for battery charge current level setting 8 led0 current sink output 0 9 led1 current sink output 1 10 led2 current sink output 2 11 bstout boost regulator output 12 gnd ground pin signal description 1 gnd ground 2 mon monitor multiplexer output 3 alrt fuel gauge alert output 4 int interrupt open-drain output 5 rst reset output. active-low, open-drain output 6 sda i 2 c serial data input/open-drain output 7 scl i 2 c serial clock input 8 mpc1 multipurpose control i/o 1 9 mpc0 multipurpose control i/o 0 10 pfn2 confgurable power mode control pin ( kout ) 11 pfn1 confgurable power mode control pin ( kin ) 12 gnd ground www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 6 table 6. connector j3 table 7. connector j4 table 8. connector j5 note: indicate that you are using the max20303 when contacting these component suppliers. pin signal description 1 cell fuel gauge voltage 2 n.c. not connected 3 cpout charge pump output 4 sfout safe out ldo 5 bk2out buck2 regulator output 6 bk1out buck1 regulator output 7 n.c. not connected 8 bbout buck-boost regulator output pin max20303 description 1 drp erm/lra haptic driver positive output 2 drn erm/lra haptic driver negative output 3 l1in ldo1 input 4 l1out ldo1 output 5 l2in ldo2 input 6 l2out ldo2 output 7 vdig internal reference supply 8 cap internal reference supply pin max20303 description 1 sys system load connection 2 n.c. not connected 3 n.c. not connected 4 n.c. not connected 5 n.c. not connected 6 mpc4 multipurpose confguration i/o 4 7 mpc3 multipurpose confguration i/o 3 8 mpc2 multipurpose confguration i/o 2 component suppliers supplier website murata americas www.murata.com/en-us www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 7 max20303 ev kit bill of materials title: bill of materials date: 03/23/2017 design: max20303_evkit_a note: dni--> do not install(packout) ; dnp--> do not procure item ref_des qty mfg part # manufacturer value description comments 1 c1 1 c1608x7r1v105m080ac tdk 1uf capacitor; smt (0603); ceramic chip; 1uf; 35v; tol=20%; tg=-55 degc to +125 degc; tc=x7r 2 c2 1 c0402x5r6r3-225mnp; c0402c225m9pac;grm155r60j225me; jmk105bj225mv venkel/kemet/mu rata/taiyo yuden 2.2uf capacitor; smt; 0402; ceramic; 2.2uf; 6.3v; 20%; x5r; -55degc to + 85degc; 0 +/-15% degc max. 3 c3, c5, c6, c10 4 c1005x5r0j475k050bc tdk 4.7uf capacitor; smt (0402); ceramic chip; 4.7uf; 6.3v; tol=10%; tg=-55 degc to +85 degc; tc=x5r 4 c4 1 grm155r60j106me44; grm155r60j106me47; c1005x5r0j106m050bc; cl05a106mq5nun; c0402c106m9pac murata; tdk; samsung electronics; kemet 10uf capacitor; smt (0402); ceramic chip; 10uf; 6.3v; tol=20%; tg=-55 degc to +85 degc; tc=x5r 5 c7 1 c0402c273k4rac kemet 0.027uf capacitor; smt (0402); ceramic chip; 0.027uf; 16v; tol=10%; model=; tg=- 55 degc to +125 degc; tc=x7r 6 c8, c15 2 c1005x5r1a105m050 tdk 1uf capacitor; smt (0402); ceramic chip; 1uf; 10v; tol=20%; tg=-55 degc to +85 degc; tc=x5r 7 c9, c13, c14, c16, c18 5 grm155r60j226me11 murata 22uf capacitor; smt (0402); ceramic chip; 22uf; 6.3v; tol=20%; tc=x5r 8 c11 1 c1005x5r1v105k050bc tdk 1uf capacitor; smt (0402); ceramic chip; 1uf; 35v; tol=10%; tg=-55 degc to +85 degc; tc=x5r 9 c12 1 c1608x5r1e106m080ac; cl10a106ma8nrnc tdk/samsung electronics 10uf capacitor; smt (0603); ceramic chip; 10uf; 25v; tol=20%; tg=-55 degc to +85 degc; tc=x5r 10 c17 1 grm155r71a104ka01; c1005x7r1a104k; c0402c104k8rac murata/tdk/keme t 0.1uf capacitor; smt (0402); ceramic chip; 0.1uf; 10v; tol=10%; model=grm series; tg=-55 degc to +125 degc; tc=x7r; 11 j1, j2 2 ts-112-t-a samtec ts-112-t-a connector; male; through hole; precision machined terminal strip; straight; 12pins 12 j3-j5 3 ts-108-t-a samtec ts-108-t-a connector; male; through hole; precision machined terminal strip; straight; 8pins 13 l1, l4 2 dfe201610e-4r7m=p2 murata 4.7uh inductor; smt (2016); metal alloy chip; 4.7uh; tol=+/-20%; 1.3a 14 l2, l3 2 dfe201612e-2r2m murata 2.2uh inductor; smt (0806); wirewound chip; 2.2uh; tol=+/-20%; 1.8a 15 r1 1 crcw08051k00fk; erj-6enf1001v; mcr10ezhf1001; rc0805fr-071kl vishay dale; panasonic; rohm; yageo 1k resistor; 0805; 1k; 1%; 100ppm; 0.125w; thick film 16 r3 1 crcw060339k0fk vishay dale 39k resistor, 0603, 39k ohm, 1%, 100ppm, 0.10w, thick film 17 u1 1 max20303 maxim max20303 evkit part- ic; wearable power namagement solution; package outline; wlp 56 pins; 0.5mm pitch; pkg. code: w563a4+1; pkg. outline: 21-100104 - 18 pcb 1 max maxim pcb pcb:max total 31 www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 8 max20303 ev kit schematic 1uf 10uf 2.2uh 22uf 4.7uh 2.2uf 4.7uf 1uf 10uf 39k 22uf ts-112-t-a 1k ts-108-t-a 4.7uh 22uf max203030.0 27nf 4.7uf 4.7uf 4.7uf 1uf 1uf 22uf 0.1uf 22uf ts-108-t-a 2.2uh ts-108-t-a ts-112-t-a c7 l1 c8 c4 c14 c1 c5 c11 c15 j4 l3 l4 j1 r1 j3 l2 c2 c18 c10 c9 u1 c3 r3 c12 c6 c16 c13 c17 j5 j2 sys bk2out cpout l2in cpn bk2lx scl sda bk1lx vdig pfn1 sfout led0 pfn2 mon alertb set bbhvlx bstlvlx bat sys vdig chgin l1in l1out chgin mpc0 pfn1 rstb intb alrtb set bat sys bstout led0 led1 led2 thm tpu cell cpout sfout bk2out bk1out bbout led2 l2in l1in mpc3 thm rstb tpu cap led1 bblvlx bk1out mpc2 drp drn l2out l1out bstout intb cap l2out mon scl mpc1 sda pfn2 bsthvlx mpc0 mpc1 mpc4 mpc2 mpc3 mpc4 sys 2 1 2 1 2 1 2 1 b4 b5 b2 d4 d3 6 g5 d5 5 h2 1 2 3 4 5 6 7 8 9 10 11 12 1 3 4 6 7 10 11 12 1 2 3 4 5 6 7 8 b3 d6 g3 g1 f7 f2 f1 e3 c6 c1 h1 b1 b7 b6 a7 h6 a6 c2 c4 c5 d1 e5 e6 e7 g2 g4 g6 h3 h5 h7 a3 a1 d7 e1 e4 d2 f4 f5 f3 h4 a2 a4 f6 c3 g7 8 7 5 4 3 2 1 a5 e2 2 9 8 c7 1 2 3 4 5 6 7 8 bk1lx bk1gnd chgin sys bat bstlvlx bsthvlx bk1out l1in l1out mpc2 mpc3 int bstgnd bblvlx rst thm tpu set sfout bstout bbhvlx alrt agnd cap mon pfn2 led0 bbgnd qstrt ctg vdig gsub pfn1 led1 bbout cell mpc0 mpc1 mpc4 dgnd led2 bk2out l2in cpout cpn cpp sda scl bk2lx bk2gnd l2out sys hdgnd drp drn www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 9 max20303 ev kittop silkscreen max20303 ev kit pcb layout rev-a 06/17 www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 10 max20303 ev kittop copper max20303 ev kit pcb layout (continued) www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 11 max20303 ev kitgnd plane max20303 ev kit pcb layout (continued) www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 12 max20303 ev kitsystem plane max20303 ev kit pcb layout (continued) www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 13 max20303 ev kitbottom copper max20303 ev kit pcb layout (continued) www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 14 max20303 ev kitbottom silkscreen max20303 ev kit pcb layout (continued) www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
maxim integrated 15 #denotes rohs compliant ordering information part type MAX20303EVKIT# ev kit www.maximintegrated.com evaluates: max20303 max20303 evaluation kit
? 2017 maxim integrated products, inc. 16 revision history revision number revision date description pages changed 0 9/17 initial release maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and specifcations without notice at any time. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. evaluates: max20303 max20303 evaluation kit for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com.

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