19-6569; rev 0; 12/12 ordering information and typical operating circuit appears at end of data sheet. general description the MAX14656 is a usb charger detector compliant with usb battery charging specification revision 1.2. the usb charger detection circuitry detects usb standard downstream ports (sdps), usb charging downstream ports (cdps), or dedicated charger ports (dcps), and controls an external lithium-ion (li+) battery charger. the device implements usb battery charging specification revision 1.2-compliant detection logic. the device also includes apple ? charger detection that allows identification of resistor divider networks on d+/d-. the internal double-pole double-throw (dpdt) usb switch is compliant to hi-speed usb, full-speed usb, low-speed usb, and uart signals. the devices internal switch features low on-resistance, low on-resistance flat - ness, and very low capacitance. the id pin controls the dpdt switch position. the MAX14656 features high-esd protection up to 15kv human body model (hbm)on cd+, cd-, and id pins. the MAX14656 is available in a 16-bump, 0.4mm pitch, 1.8mm x 1.9mm wlp package and operates over the -40oc to +85oc extended temperature range. applications dscs and camcorders tablet pcs smartphones e-readers benefts and features consumes less power ? low battery standby current 5a (typ) delivers usb compliance and flexibility ? compliant to usb battery charging specification ? revision 1.2 ? data contact detection for foolproof connector insertion detection ? dedicated charger detection ? standard downstream port detection ? charging downstream port detection ? apple charge r detection ? sony ? charger detection* facilitates system design ? integrated precision 1.5a overvoltage protection (ovp) ? negative audio capable dpdt hi-speed usb switches ? automatic switch and charger interface control ? full control by i 2 c interface ? interrupt for device status change saves board space ? v bus connection capable of 36v ? 15kv hbm esd protection ? 1.8mm x 1.9mm wlp package * contact factory for the list of compatible chargers. apple is a registered trademark of apple, inc. sony is a registered trademark and registered service mark of kabushiki kaisha ta sony corporation. evaluation kit available MAX14656 usb charger detection with integrated overvoltage protector abridged data sheet
maxim integrated 9 bump description bump confguration bump name function a1 v b usb connector v bus connection. bypass v b with a 1f capacitor to gnd. a2 out overvoltage-protected usb transceiver v bus power output. bypass out with a 1f capacitor to gnd. a3 idbf push-pull digital id buf fer output a4 int active-low, open-drain, interrupt request fault output. connect int to an external pullup resistor. b1 cd- usb connector d- connection b2 ce active-low, open-drain, charger control enable output. connect ce to an external pullup resistor. b3 sda i 2 c serial-data input/output. connect sda to an external pullup resistor. b4 scl i 2 c serial-clock input. connect scl to an external pullup resistor. c1 cd+ usb connector d+ connection c2 gnd ground c3 bat battery connectio n input. bypass ba t with a 1f capacitor to gnd. c4 ut uar t tx line from device d1 id usb connector id connection. bypass id with a 1nf (max) capacitor to gnd. d2 td- usb transceiver d- connection d3 td+ usb transceiver d+ connection d4 ur uart rx line from device wlp (1.8mm 1.9mm) top view (bumps on bottom) ut cd+ scl cd- int v b + 12 34 a gnd bat ce sda ur id td- td+ outi dbf b c d MAX14656 MAX14656 usb charger detection with integrated overvoltage protector www.maximintegrated.com abridged data sheet
maxim integrated 24 figure 11. human body esd test model figure 12. human body current waveform 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. human body model figure 1 1 shows the human body model, and figure 12 shows the current waveform it generates when dis charged into a low-impedance state. this model consists of a 100pf capacito r charged to the esd voltage of interest that is then discharged into the device through a 1.5ki resistor. 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. ordering information +denotes a lead(pb)-free/rohs-compliant package. part temp range pin- package top mark MAX14656ewe+t -40c to +85c 16 wlp aag package type package code outline no. land pattern no. 16 wlp w161c1+1 21-0491 refer to application note 1891 figure 11 figure 12 charge-current- limit resistor discharge resistance storage capacitor c s 100pf r c 1m r d 1.5k high- voltage dc source device under test 100% 36.8% t rl time t dl peak-to-peak ringing (not drawn to scale) i r 0 0 i peak (amps) 90% 10% MAX14656 usb charger detection with integrated overvoltage protector www.maximintegrated.com abridged data sheet
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