functional diagram / typical application circuit 19-6457; rev 1; 1/14 ordering information/selector guide appears at end of data sheet. for related parts and recommended products to use with this part, refer to www.maximintegrated.com/max14576.related. general description the max14576/MAX14636/max14637 are usb charger detectors. the max14576/MAX14636/max14637 will pass usb battery charger specification revision 1.2 (usb bc 1.2) compliance tests. the MAX14636/max14637 can also detect apple chargers, and other nonstandard types. these devices are capable of detecting multiple usb bat - tery charging methods including standard downstream ports (sdp), charging downstream ports (cdp), and dedi - cated charger ports (dcp). the devices also feature usb bc 1.2 defined dead-battery option support. the max14576/MAX14636/max14637 feature analog switches that are capable of passing usb hi-speed, full- speed, and low-speed signals. the switches have low on- resistance (3i, typ) and low on-capacitance (4.5pf, typ). the cdn and cdp are high esd protected up to q15kv human body model (hbm), q15kv iec61000-4-2 air gap discharge, and q 8kv iec61000-4-2 contact discharge. the max14576/MAX14636/max14637 are available in a 10-pin (1.6mm x 2.1mm) utqfn package and operate over the -40nc to +85 nc extended temperature range. benefits and features s high level of integration ? capability to withstand -6v to +30v (absolute maximum) on vbus line ? usb battery charger detection will pass usb battery charger specification rev 1.2 compliance tests usb dcp, sdp, and cdp detection proprietary charger detection capability (MAX14636/ max14637) ? usb 2.0 hi-speed switch with 3 i (typ) on- resistance and 4.5pf (typ) on-capacitance ? high esd protection on cdp and cdn q15kvhbm q 15kviec 61000-4-2 air-gap discharge q8kviec 61000-4-2 contact discharge ? q15kv hbm esd protection vbus when bypassed with 0.1f or greater ceramic capacitor s save power in portable applications ? low supply current (150a, typ) s space saving ? 10-pin, 1.6mm x 2.1mm, utqfn package applications cell phones digital cameras ereaders tablets portable industrial products max14576 MAX14636 max14637 usb charger detection usb/micro-usb connector internal power i/ o control v bus vbus gnd d- d+ sw_open tdn tdp good_bat gnd 1mi chg_al_n micro- processor pmic vbus 1mi (MAX14636/ max14637) 1mi (MAX14636/ max14637) v io v io chg_det cdn cdp max14576/MAX14636/max14637 usb charger detectors abridged data sheet evaluation kit available for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com.
2 pin description pin configuration pin name function 1 sw_open data switches open indicator. sw_open is low when switches are closed. sw_open is high impedance when switches are open. sw_open is an open-drain output. connect sw_open to a pullup resistor externally. 2 tdn usb transceiver d- connection 3 tdp usb transceiver d+ connection 4 chg_al_n charging allow indicator. chg_al_n is low when vbus is valid and charging is allowed. chg_al_n is an open-drain output. connect chg_al_n to a pullup resistor externally. 5 good_bat good battery digital input. set good_bat low for a dead battery and enable usb bc 1.2 compliant dead battery charging. set good_bat high for a good battery. 6 gnd ground 7 cdp usb connector d+ connection 8 cdn usb connector d- connection 9 v bus usb vbus input. bypass vbus to ground with a 0.1f ceramic capacitor as close to the device as possible to achieve high 15kv hbm esd protection. 10 chg_det charger detection push-pull output. chg_det indicates the capability of the connected charger type (see tables 1, 2, 3). 1 2 7 6 34 5 good_bat sw_open tdn tdp chg_al_n vbus cdn cdp gnd chg_det 10 9 8 + utqfn (1.6mm x 2.1mm) top view max14576 MAX14636 max14637 maxim integrated max14576/MAX14636/max14637 usb charger detectors abridged data sheet
3 ordering information/selector guide package information for the latest package outline information and land patterns (foot - prints), 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 + denotes a lead(pb)-free package/rohs-compliant package. t = tape and reel part temp range apple charge current tomtom charge current top mark pin-package max14576evb+t -40nc to +85nc 100ma 100ma abd 10 utqfn MAX14636evb+t -40nc to +85nc full current full current abe 10 utqfn max14637evb+t -40nc to +85nc full current not supported abg 10 utqfn package type package code outline no. land pattern no. 10 ultra tqfn v101a2cn+1 21-0610 90-0386 maxim integrated max14576/MAX14636/max14637 usb charger detectors abridged data sheet
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