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AAT3686IXN-4.2-T1 Datasheet(PDF) 2 Page - Advanced Analog Technology, Inc. |
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AAT3686IXN-4.2-T1 Datasheet(HTML) 2 Page - Advanced Analog Technology, Inc. |
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2 / 24 page  Pin Descriptions Pin Configuration TDFN34-16 TDFN44-16 (Top View) (Top View) ADP GND CHR USB BAT 3 EN ADPP# TS USBL USBSEL CT ADPSET USBH STAT1 STAT2 DATA 4 5 1 2 6 7 8 14 13 12 16 15 11 10 9 ADP GND CHR USB BAT 3 EN ADPP# TS USBL USBSEL CT ADPSET USBH STAT1 STAT2 DATA 4 5 1 2 6 7 8 14 13 12 16 15 11 10 9 Pin # (TDFN34-16/ TDFN44-16) Name Type Function 1 USB In USB power supply input. 2 BAT In/Out Battery charging and sensing. 3 ADP In Adapter input. 4 GND Ground Ground connection. 5 CHR In/Out Resistor divider to set USB voltage regulation for charge reduction mode. Leave this pin open for default 4.5V USB regulation point. Tie to USB pin to disable this function. 6 EN In Enable pin. Logic high enables the IC. 7 ADPP# Out Adapter present indicator. This pin is open drain until ADP pin reaches threshold. 8 TS In/Out Connect to 10k Ω NTC thermistor. 9 DATA In/Out Status report to microcontroller via serial interface, open-drain. 10 STAT2 Out Battery charge status indicator pin to drive an LED: active low, open-drain. 11 STAT1 Out Battery charge status indicator pin to drive an LED: active low, open-drain. 12 CT In/Out Timing capacitor to adjust internal watchdog timer. Set maximum charge time for adapter powered trickle, CC, and CV charge modes. The watchdog timer only sets the timers for adapter battery charging; there is no timeout for the battery charging from the USB input. If timing function is not needed, termi- nate this pin to ground. 13 USBSEL In When USB is present, use this pin to toggle between 100mA and 500mA limit. 14 USBL In/Out Connect resistor here to set charge current for low-current USB port. 15 USBH In/Out Connect resistor here to set charge current for high-current USB port. 16 ADPSET In/Out Use resistor at this pin to set adapter charging current. EP Exposed paddle (bottom); connect to GND directly beneath package. AAT3686 USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger 2 3686.2006.10.1.9 |
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