AAT3663_08 Datasheet, PDF (1/23 Pages) Advanced Analogic Technologies – 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications

BatteryManager^TM
PRODUCT DATASHEET
AAT3663
1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications
General Description
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 oper-
ate from USB ports or an AC adapter inputs up to an
input voltage of 13.2V.
AAT3663 precisely regulates battery charge voltage and
current for 4.2V and 8.4V Li-Ion battery cells. The bat-
tery charging current is user programmed 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 opti-
mum 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 con-
dition, the device will automatically shut down, thus pro-
tecting the charger and the battery under charge.
Two status monitor output pins are provided to indicate
the battery charge status by directly driving external
LEDs. Additionally, an open-drain power-source detec-
tion 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 tem-
perature range.
Features
• 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
• Digital Still Cameras
• Global Positioning Systems (GPS)
• Point Of Service (POS) Terminals
• Portable DVD Players
• Portable Media Players (PMP)
• Two Way Radios
Typical Application
ON/OFF
V_IN
EN BATS
IN
BAT
AAT3663
STAT1
TS
STAT2
TERM
ADPP#
ISET
GND ^CT
10μF
BATT +
BATT-
TEMP
C_T
R_SET
R_TERM
Battery
Pack
3663.2008.01.1.2
www.analogictech.com
1