general description the max14575aCmax14575c evaluation kits (ev kits) are fully assembled and tested circuit boards that demon - strate the functionality of the max14575aCmax14575c adjustable current-limit switches in an 8-pin tdfn pack - age. each ev kit features jumpers for configuration and evaluation of all versions of the ic, which include autore - try, latchoff, and continuous current-limit versions. input power to the ev kits is provided by a standard 5v usb bus or an external 5v power supply. benefts and features evaluate preselected threshold or adjustable threshold by simple jumper configuration easy connections through binding posts status leds give visual indication of power present and fault conditions proven pcb layout fully assembled and tested 19-6683; rev 0; 5/13 ordering information appears at end of data sheet. designation qty description bp1, bp3 2 red binding posts keystone 7006 bp2, bp4 2 black binding posts keystone 7007 c1 1 1f 10%, 25v x5r ceramic capacitor (0603) murata grm188r61e105k c2 1 0.1f 10%, 25v x5r ceramic capacitor (0603) murata grm188r61e104k c3, c4 2 10f 10%, 25v x5r ceramic capacitors (0805) tdk c2012x5r1e106k j1 1 usb type-b right-angle receptacle molex 67068-9000 ju1 1 8-pin, dual-row header, 0.1in centers ju2, ju5, ju10, ju11 4 2-pin, single-row headers, 0.1in centers ju3 1 4-pin header, 0.1in centers led1 1 green led (1206) kingbright aptl3216cgck designation qty description led2 1 red led (1206) lite-on ltst-c150ckt r1 1 309? 1% resistor (0805) r2 1 10k? 1% resistor (0805) r3 1 332? 1% resistor (0805) r4, r9, r11 3 475k? 1% resistors (0805) r5, r12 0 not installed, resistors (0805) r6 1 499k? 1% resistor (0805) r7 1 84.5k? 1% resistor (0805) r8, r15 2 51.1k? 1% resistors (0805) r10 1 1k? 1% resistor (0805) r16 1 12-turn, 500k? potentiometer murata pv37w504c01b00 tp1 1 white test point tp2, tp4, tp5, tp7 4 black test points tp3, tp6 2 red test points tp8 1 yellow test point u1 1 see the ev kit-specifc component list u2 1 nc7wz07 5 shunts 1 pcb: max14575a/b/c evkit component list max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c
maxim integrated 2 quick start required equipment max14575aCmax14575c ev kit 5v, 2.6a power supply procedure the ev kits are fully assembled and tested. follow the steps below to verify board operation: 1) verify that a shunt is installed across pins 1-3 on jump - er ju3 (powers the device and peripherals at tp6) and that a shunt is installed across pins 1-2 on jumper ju5 (enables the device). 2) verify that a shunt is installed across pins 1-2 on jumper ju10 (connects the flag output on the device to led). 3) verify that a shunt is not installed across pins 1-2 on jumper ju2 (an installed jumper forces led2 on). 4) install a shunt at the desired location on jumper ju1 to set the current limit according to table 1. 5) connect the 5v, 2.6a power supply at tp6. 6) verify that the green led (led1) is lit, indicating that the device is powered. 7) connect tp8 or bp3 to the system in which the device will be evaluated, or connect a variable load to tp8. 8) if current limit is reached, led2 glows red and device goes into its defined overcurrent fault response. see the max14575a/max14575al/max14575b/ max14575c ic data sheet for more details. detailed description of hardware the max14575aCmax14575c ev kits are fully assem - bled and tested circuit boards that demonstrate the functionality of the max14575aCmax14575c adjustable current-limit switches in an 8-pin tdfn package. each ev kit features jumpers for configuration and evaluation of all versions of the device, which include autoretry, latchoff, and continuous current-limit versions. input power to the ev kit is provided by a standard 5v usb bus or an external 5v power supply. included with the ev kit is a usb type-a male to usb type-b male cable, providing a convenient way to power the ev kits peripherals without disturbing evaluation of the current-limiting function of the device. input power can also be supplied by an external dc source. * for evaluation of the max14575al, samples must be ordered separately and installed in place of u1 by the customer. ** ep = exposed pad. note: indicate that you are using the max14575aCmax14575c when contacting these component suppliers. supplier phone website keystone electronics corp. 800-221-5510 www.keyelco.com kingbright corporation 909-468-0500 www.kingbrightusa.com lite-on, inc. 408-946-4873 www.us.liteon.com molex 800-786-6539 www.molex.com murata americas 800-241-6574 www.murataamericas.com tdk corp. 847-803-6100 www.component.tdk.com part designation description MAX14575AEVKIT# u1* 250ma to 2.5a adjustable current-limit switch (8 tdfn-ep**) maxim max14575aeta+ (top mark: bmv) max14575bevkit# 250ma to 2.5a adjustable current-limit switch (8 tdfn-ep**) maxim max14575beta+ (top mark: bmx) max14575cevkit# 250ma to 2.5a adjustable current-limit switch (8 tdfn-ep**) maxim max14575ceta+ (top mark: bmy) ev kit-specifc component list component suppliers max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
maxim integrated 3 power supply the ev kit peripherals are powered by a user-supplied usb port at j1 or by a 5v dc power supply connected between v ext and gnd. jumper ju3s position selects the power source. with a shunt shorting pins 1-2 on ju3, the ev kit is powered at v ext , while a shunt shorting pins 1-3 means that the ev kit is powered by the supply pres - ent at the input of the device. placing the shunt on pins 1-4 on ju3 allows the peripheral devices to be powered from an external power supply connected at tp3. the device must always be powered by an external supply connected at tp6 or bp1. see table 1 for jumper settings. flag indicator led the ev kit includes a built-in led to give visual notifica - tion of an overcurrent fault. if jumper ju10 has a shunt installed at 1-2 and jumper ju2 has no shunt installed, then an overcurrent fault causes led2 to glow red. see table 1 for jumper settings. preset and adjustable current limits the ev kit includes three common overcurrent limits as jumper-configurable options, as well as a fourth jumper-configurable option for an adjustable limit. set the current limit to 250ma and install a shunt across pins 1-2 on jumper ju1. for the 1.5a current limit, install a shunt across pins 3-4 on ju1. for the 2.5a current limit or the adjustable limit, install a shunt across pins 5-6 or 7-8 on ju1, respectively. the adjustable limit is set using the potentiometer (r16). see table 1 for jumper settings. * default position. jumper shunt position description ju1 1-2 250ma current limit 3-4* 1.5a current limit 5-6 2.5a current limit 7-8 adjustable current limit (adjust current limit with r16) ju2 1-2 force fag not installed* normal operation ju3 1-2* peripherals are powered by usb (j1) 1-3 peripherals are powered by the same supply as the device 1-4 peripherals are powered by an external 5v supply ju5 1-2* enables the device not installed disables the device ju10 1-2* enables the fault indicator led (led2) not installed disables the fault indicator led (led2) ju11 1-2 shorts input and output of the device not installed* normal operation table 1. jumper settings (ju1Cju3, ju5, ju10, ju11) max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
maxim integrated 4 figure 1. max14575aCmax14575c ev kit schematic max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
maxim integrated 5 figure 2. max14575aCmax14575c ev kit component placement guidecomponent side figure 4. max14575aCmax14575c ev kit pcb layout layer 2 figure 3. max14575aCmax14575c ev kit pcb layout component side 1.0? 1.0? 1.0? max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
maxim integrated 6 figure 6. max14575aCmax14575c ev kit pcb layout solder side figure 5. max14575aCmax14575c ev kit pcb layout layer 3 1.0? 1.0? max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
maxim integrated 7 # denotes rohs compliant. part type MAX14575AEVKIT # ev kit max14575bevkit # ev kit max14575cevkit # ev kit ordering information max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c www.maximintegrated.com
? 2013 maxim integrated products, inc. 8 revision number revision date description pages changed 0 5/13 initial release revision history 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. max14575aCmax14575c evaluation kits evaluate: max14575a/max14575al/ max14575b/max14575c maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. 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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