general description the MAX14667 is a dual usb charger adapter emulator with automatic host charger identification circuitry for usb dedicated chargers. the device allows usb wall adapters, travel chargers, and other dedicated chargers to identify themselves as a usb dedicated charger to usb devices, an apple charger to apple products, and a samsung galaxy tablet dedi - cated charger port to samsung galaxy tablet devices. the device features a control input that allows for charger mode selection. the MAX14667 supports usb battery charger (bc) revision 1.2 specification compliant devices, including all major brand usb devices from samsung, nokia, blackberry, lg, apple devices, and samsung galaxy devices in autodetection 1a or autodetection 2a modes. the MAX14667 is available in an 8-pin (2.9mm x 1.6mm) sot23 package, and is specified over the -40c to +85c extended temperature range. applications usb wall charger and travel adapter usb car charger and cigarette lighter adapter universal charger including ipod?/ipad?/iphone? benefts and features optimized for charging adapters ? flexible device and adapter connection order faster charging ? apple 2a charging capability ? samsung galaxy tablet 2a charging capability improved charger interoperability ? meets new usb bc revision 1.2 specification ? supports samsung galaxy smartphones ? backwards compatible with previous usb bc revisions ? meets china yd/t1591-2009 charging specification greater user flexibility ? cb_ pins control charger mode saves space on board ? 2.9mm x 1.6mm, 8-pin sot23 package ? high-esd human body model (hbm) protection on dp and dm ordering information appears at end of data sheet. for related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX14667.related . ipod ? /ipad ? /iphone ? are registered trademarks of apple, inc. gnd v cc v cc v cc gnd cb1 dc-dc cb2 dp1 dm1 usb a connector MAX14667 d+ d- v bus 150f 0.1f gnd dp2 dm2 usb a connector d+ d- v bus 150f 19-6729; rev 0; 6/13 typical operating circuit MAX14667 dual usb charger adapter emulator
(all voltages referenced to gnd.) v cc , cb_, dp_, dm_ .............................................. -0.3v to +6v continuous current into any terminal .............................. 50ma continuous power dissipation (t a = +70oc) sot23 (derate 5.2mw/oc above +70oc) ................ 412.4mw operating temperature range ............................ -40 c to +85oc maximum junction temperature ..................................... +150oc storage temperature range ............................. -65oc to +150oc lead temperature (soldering, 10s) ................................. +300oc soldering temperature (reflow) ...................................... +260oc sot23 junction-to-ambient thermal resistance ( ja ) ........ 194oc/w junction-to-case thermal resistance ( jc ) ............... 70oc/w (note 1) (v cc = 3.0v to 5.5v, t a = -40c to +85c, unless otherwise noted. typical values are at v cc = +5.0v, t a = +25c, unless otherwise noted.) (notes 2, 3) parameter symbol conditions min typ max units power supply operating power-supply range v cc 3 5.5 v apple/samsung divider valid range 4.75 5.5 v cc supply current i cc v cc = 5.0v 45 65 a power-on reset por 1.5 v por delay t por 100 ms analog switch analog signal range v dp _ , v dm _ 0 v cc v on-resistance of dp_/dm_ short r short v dp _ _ = 0.7v, i dm _ sink = 100a to gnd 4.5 11 dynamic cb_ switching time t on cb _ = v cc to 0, 0 to v cc 4 s internal resistors dp_/dm_ short pulldown r pd 350 500 700 k 40 v cc bias v ap1(2)a _ p(m) v cc = 4.75v, 5.5v 39 40 41 %vcc 54 v cc bias v ap1(2)a _ m(p) v cc = 4.75v, 5.5v 52.6 53.6 54.6 %vcc 25 v cc bias v ssg _ p/m v cc = 4.75v, 5.5v 24 25 26 %vcc maxim integrated 2 note 1: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four-layer board. for detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial . absolute maximum ratings stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to ab solute maximum rating conditions for extended periods may affect device reliability. package thermal characteristics electrical characteristics MAX14667 dual usb charger adapter emulator www.maximintegrated.com
(v cc = 4.75v to 5.5v, t a = -40c to +85c, unless otherwise noted. typical values are at v cc = +5.0v, t a = +25c, unless otherwise noted.) (note 2) (v cc = 3.0v to 5.5v, t a = -40c to +85c, unless otherwise noted. typical values are at v cc = +5.0v, t a = +25c, unless otherwise noted.) (notes 2, 3) note 2: all units are 100% production tested at t a = +25c. specifications over operating temperature range are guaranteed by design. note 3: the device is operational from 3.0v to 5.5v. for the resistor-divider equivalent network to function properly, keep v cc within the 4.75v to 5.5v range. note 4: the comparators are disabled during the por delay. parameter symbol conditions min typ max units dm1 comparator threshold v dm1f dm_ falling autodetection 1a 40 41 42 %v cc autodetection 2a 31 32 33 dm1 comparator hysteresis 1 %v cc dm2 comparator threshold v dm2f dm_ falling 6.31 7 7.62 %v cc dm2 comparator hysteresis 1 %v cc dp comparator threshold v dpr dp_ rising autodetection 1a 45 46 47 %v cc autodetection 2a 57 58 59 dp comparator hysteresis 1 %v cc parameter symbol conditions min typ max units logic input (cb) cb_ input logic high v ih 1.4 v cb_ input logic low v il 0.4 v cb_ input leakage current i cb _ v in = 0, v il , v ih , 5.5v -1 +1 a esd protection esd protection level (dp_ and dm_ only) v esd human body model 15 kv contact model 6 maxim integrated 3 electrical characteristics (continued) comparator characteristics (note 4) MAX14667 dual usb charger adapter emulator www.maximintegrated.com
(v cc = 5.0v, t a = +25c, unless otherwise noted.) dp_ / dm_ short on-resistance vs. v dp_ MAX14667 toc01 v dp_ (v) on-resistance () 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 2 4 6 8 10 0 0.5 5.5 i dp_ = 10ma v cc = 5.5v v cc = 3.0v supply current vs. supply voltage MAX14667 toc02 v cc (v) supply current (a) 5.0 4.5 3.5 4.0 10 20 30 40 60 50 70 80 0 3.0 5.5 cb_ = v cc t a = -40c t a = +25c t a = +85c supply current vs. logic level MAX14667 toc03 v cb_ supply current (a) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 20 40 60 80 100 120 140 0 0 5.5 v cc = 5.5v v cb1 or v cb2 = 0v logic-input threshold vs. supply voltage MAX14667 toc04 supply voltage (v) logic-input threshold (v) 5.0 4.5 4.0 3.5 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 3.0 5.5 cb_ falling cb_ rising usb-compliant device attach event MAX14667 toc05 1ms /div purple line = dp_ blue line = dm_ cb logic high to logic low event MAX14667 toc06 10s /div trace 1: cb_ trace 2: dp_ trace 3: dm_ ch1 ampl 5.30v ch2 ampl 680mv maxim integrated 4 7slfdo2shudljdudfhulvlfv MAX14667 dual usb charger adapter emulator www.maximintegrated.com
sot23 top view MAX14667 dp2 1 2 gnd cb2 dp1 3 4 v cc dm2 8 7 dm1 cb1 6 5 + pin name function 1 dp1 usb d+ connection for connector one 2 gnd ic ground; return to the transformer output 3 cb2 control bit for connector two 4 dp2 usb d+ connection for connector two 5 dm2 usb d- connection for connector two 6 v cc power supply. bypass v cc with a 0.1f ceramic capacitor as close as possible to the pin. 7 cb1 control bit for connector one 8 dm1 usb d- connection for connector one maxim integrated 5 pin description pin confguration MAX14667 dual usb charger adapter emulator www.maximintegrated.com
v cc dp por cb2 cb1 control logic connector 2 v dp dm1 v dm1 dm2 v dm2 dp v dp dm1 v dm1 dm2 v dm2 500k? v cc v cc 500k? dp1 dm1 dp1 dm1 control logic connector 1 MAX14667 maxim integrated 6 )xflrdoldjud MAX14667 dual usb charger adapter emulator www.maximintegrated.com
detailed description the MAX14667 is a dual usb host adapter emulator with automatic host charger identification circuitry for usb dedicated chargers. the device allows usb wall adapters, travel chargers, and other dedicated chargers to identify themselves as a usb-dedicated charger to usb devices, an apple charger to apple products, and a samsung galaxy tablet dedicated charger port to samsung galaxy tablet devices. resistor-dividers the MAX14667 features internal resistor-divider equiva - lent networks for biasing data lines to provide support for apple-compliant devices as well as samsung galaxy tablets. mode control the device features two digital inputs, cb1 and cb2, for mode selection. connect cb_ to a logic-level high voltage to place the corresponding channel in autodetection 2a charger mode or to a logic-level low voltage to place the corresponding channel in autodetection 1a charger mode. see table 1. autodetection the MAX14667 features autodetection 1a and autodetec - tion 2a for dedicated chargers in which the device moni - tors the voltages at dm_ and dp_ to determine the type of device attached. when the voltage at dm_ is v dm1f or higher, and the voltage at dp_ is v dpr or lower, the voltage remains unchanged. if the voltage at dm_ is forced below the v dm1f threshold, the internal switch disconnects dm_ and dp_ from the resistor-dividers and dm_ and dp_ are shorted together for usb-dedicated charging mode. if the samsung galaxy tablet device is connected, dm_ and dp_ are shorted together and con - nected to the correct resistor-divider for samsung galaxy tablet dedicated charging mode. once the charging voltage is removed, the short between dp_ and dm_ is disconnected. 15kv esd protection as with all maxim devices, esd-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. the dp_ and dm_ lines have extra protection against static electricity. maxims engineers have developed state-of-the-art structures to protect these pins against esd of 15kv without damage. the esd structures withstand high esd in normal opera - tion and while the device is powered down. after an esd event, the MAX14667 continues working without latchup, whereas competing products can latch and must be powered down to remove latchup. esd protection can be tested in various ways. the dp_ and dm_ lines of this product family are characterized for protection to the fol - lowing limits: 1) 15kv using the human body model 2) 6kv using the contact discharge method esd test conditions esd performance depends on a variety of conditions. contact maxim for a reliability report that documents test setup, test methodology, and test results. table 1. digital input state for MAX14667 cb usb b.c. 1.2 specifcation samsung galaxy tablet apple 1 autodetection 2a supports all compliant devices charge at 2a appears as apple 2a charger 0 autodetection 1a supports all compliant devices charge at 2a appears as apple 1a charger maxim integrated 7 MAX14667 dual usb charger adapter emulator www.maximintegrated.com
+ denotes a lead(pb)-free/rohs-compliant package. t = tape and reel. part temp range pin- package top mark MAX14667eka+t -40c to +85c 8 sot23 aeth package type package code outline no. land pattern no. 8 sot23 k8+2 21-0078 90-0176 maxim integrated 8 package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. chip information process: bicmos ordering information MAX14667 dual usb charger adapter emulator www.maximintegrated.com
revision number revision date description pages changed 0 6/13 initial release ? 2013 maxim integrated products, inc. 9 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. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. MAX14667 dual usb charger adapter emulator for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com.
|
