AAT3663 Datasheet, PDF (1/22 Pages) Advanced Analogic Technologies – 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications

AAT3663
1A Linear Li-Ion Battery Charger
for Single and Dual Cell Applications
General Description
BatteryManager^™
Features
The AAT3663 BatteryManager™ is a member of
AnalogicTech’s Total Power Management IC™
family. This device is an integrated single/dual cell
Lithium-Ion (Li-Ion) / polymer battery charger IC
designed to operate from USB ports or an AC
adapter inputs up to an input voltage of 13.2V.
AAT3663 precisely regulates battery charge volt-
age and current for 4.2V and 8.4V Li-Ion battery
cells. The battery charging current is user pro-
grammed up to 1A by an external resistor.
Battery charge state is continuously monitored for
fault conditions. A Digital Thermal Loop Control
maintains the maximum possible battery charging
current for the optimum set of input to output power
dissipation and ambient temperature conditions. In
the event of an over-current, over-voltage, short-
circuit, or over-temperature fault condition, the
device will automatically shut down, thus protecting
the charger and the battery under charge.
Two status monitor output pins are provided to indi-
cate the battery charge status by directly driving
external LEDs. Additionally, an open-drain power-
source detection output (ADPP#) is provided to
report presence of an input power supply
The AAT3663 is available in a thermally enhanced,
space-saving, 14-pin 3x3 mm TDFN package and
is specified for operation over the -40°C to +85°C
temperature range.
• 4.0V ~ 13.2V Input Voltage Range
• Compatible with USB or AC Adapter Sources
• Programmable Fast Charge Current from
100mA to 1A
• Programmable Charge Termination Current
• Digital Thermal Loop Charge Reduction
• Less Than 0.4µA Battery Leakage Current
• Programming Charge Timer
• Battery Temperature Sensing
• Battery Temp Sense Open Circuit Detection
• Automatic Recharge Sequencing
• Automatic Trickle Charge for Battery
Pre-Conditioning
• Automatic Charge Termination
Shutdown/Sleep Mode
• Less than 1µA Shutdown Current
• Over-Voltage and Over-Current Protection
• Power On Reset and Soft Start
• 3x3mm 14-pin TDFN Package
Applications
• Bluetooth™ Headset
• Cell Phones
• Digital Still Cameras
• MP3 Players
• Personal Data Assistants (PDAs)
• Other Li-Ion Battery Powered Devices
Typical Application
ON/OFF
VIN
EN BATS
IN
BAT
AAT3663
10μF
BATT +
BATT-
STAT1
TS
STAT2
TERM
ADPP#
ISET
GND ^CT
TEMP
C_T
R_SET
R_TERM
Battery
Pack
3663.2007.10.1.0
1