DATA SHEET AAT3663 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications General Description Features The AAT3663 BatteryManager is a member of Skyworks 4.0V ~ 13.2V Input Voltage Range Total Power Management IC family. This device is an Compatible with USB or AC Adapter Sources integrated single/dual cell Lithium-Ion (Li-Ion) / polymer Programmable Fast Charge Current from 100mA to 1A battery charger IC designed to operate from USB ports Programmable Charge Termination Current or an AC adapter inputs up to an input voltage of 13.2V. Digital Thermal Loop Charge Reduction Less Than 0.4A Battery Leakage Current AAT3663 precisely regulates battery charge voltage and Programming Charge Timer current for 4.2V and 8.4V Li-Ion battery cells. The bat- Battery Temperature Sensing tery charging current is user programmed up to 1A by an Battery Temp Sense Open Circuit Detection external resistor. Automatic Recharge Sequencing Battery charge state is continuously monitored for fault Automatic Trickle Charge for Battery Pre-Conditioning conditions. A Digital Thermal Loop Control maintains the Automatic Charge Termination Shutdown/Sleep Mode maximum possible battery charging current for the opti- Less than 1A Shutdown Current mum set of input to output power dissipation and ambient Over-Voltage and Over-Current Protection temperature conditions. In the event of an over-current, Power On Reset and Soft Start over-voltage, short-circuit, or over-temperature fault con- 3 3mm 14-pin TDFN Package dition, the device will automatically shut down, thus pro- tecting the charger and the battery under charge. Applications Two status monitor output pins are provided to indicate Digital Still Cameras the battery charge status by directly driving external Global Positioning Systems (GPS) LEDs. Additionally, an open-drain power-source detec- Point Of Service (POS) Terminals tion output (ADPP ) is provided to report presence of an Portable DVD Players input power supply Portable Media Players (PMP) Two Way Radios The AAT3663 is available in a thermally enhanced, space-saving, 14-pin 3 3 mm TDFN package and is specified for operation over the -40C to +85C tem- perature range. Typical Application ON/OFF EN BATS BATT+ IN V IN BAT 10F BATT-- AAT3663 TEMP TS STAT1 STAT2 TERM Battery ISET ADPP Pack CT GND R R SET TERM C T Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 201878C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. October 11, 2012 DATA SHEET AAT3663 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications Pin Description Pin Symbol Type Function Enable pin, Active high with internal pull-down. If not used, pull high to the IN pin to continuously 1 EN I enable the charger IC when input power is applied. Charge timer programming pin. A 0.1F ceramic capacitor should be connected between this pin 2 CT I and GND. Connect directly to GND to disable the timer function. Charge current programming pin. Connect a resistor between this pin and GND to program the con- 3 ISET I stant fast charge current. 4 GND I/O IC ground connection. Connect this pin to power ground. 5 TS I/O Battery temperature sense input. Connect the Li-Ion battery pack NTC resistor terminal to this pin. Battery voltage sense pin. Connect this pin directly to the positive battery terminal. If this function 6 BATS I is not used, connect to the BAT pin directly. 7 BAT O Battery charge output pin. Connect to the positive battery terminal. 8, 9 IN I Power supply input pin. Connect the input USB port or Adapter power source to this pin Charge status pin, open-drain output. Connect the STAT2 LED with a series ballast resistor between 10 STAT2 O IN and this pin. Charge status pin, open-drain output. Connect the STAT1 LED with a series ballast resistor between 11 STAT1 O IN and this pin. Input supply power-good status pin, open-drain output. Connect the ADPP status LED with a series 12 ADPP O ballast resistor between IN and this pin. Charge termination current programming input pin. Connect a resistor between this pin and GND 13 TERM I to program the charge termination current. When TERM is open, the termination current is 10% (default sertting) of the set maximum charge current. 14 N/C No connection. Pin Configuration TDFN33-14 (Top View) 1 14 EN N/C 2 13 CT TERM 3 12 ISET ADPP 4 11 GND STAT1 5 10 TS STAT2 6 9 IN BATS 7 8 BAT IN Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 201878C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. October 11, 2012