AAT3680 Datasheet, PDF (1/18 Pages) Advanced Analogic Technologies – Lithium-Ion Linear Battery Charge Controller

AAT3680
Lithium-Ion Linear Battery Charge Controller
General Description
The AAT3680 BatteryManager™ is a member of
AnalogicTech's Total Power Management IC™
family. This device is an advanced Lithium-Ion (Li-
Ion) battery charge and management IC, specifi-
cally designed for low cost compact portable appli-
cations. In a single 8-pin package, the AAT3680
precisely regulates battery charge voltage and
charge current. This device is capable of two trick-
le charge current levels controlled by one external
pin. Battery charge temperature and charge state
are carefully monitored for fault conditions. In the
event of an over current, short circuit or over tem-
perature failure, the device will automatically shut
down, thus protecting the charging device and the
battery under charge. A battery charge state mon-
itor output pin is provided to indicate the battery
charge status though a display LED. The battery
charge status output is a serial interface which may
also be read by a system microcontroller.
The AAT3680 is available in an 8-pin MSOP or 12-
pin TSOPJW package, specified over -20 to 70°C
range.
Features ^{BatteryManager™}
• 4.5V to 15V Input voltage range
• 1% Accurate Preset Voltages: 4.1V, 4.2V,
8.2V, 8.4V
• Low operation current, typically 0.5mA
• Programmable Charge Current
• Automatic recharge sequencing
• Battery temperature monitoring
• Deep discharge cell conditioning
• Fast trickle charge option with thermal over-ride
• Full battery charge auto turn off / sleep mode
• Over voltage, current and temperature
protection
• Power on reset
• LED Charge Status Output or System
Microcontroller serial interface
• Temperature range -20 to 70°C
• 8 pin MSOP, 12 pin TSOPJW package
Applications
• Cellular Phones
• Personal Digital Assistants (PDA's)
• Desktop Chargers
• USB Chargers
Typical Application
RSENSE
Q1
0.2Ω
FZT788B
VP
C1
4.7µF
R1
2.5k
DRV
T2X
CSI
BAT
AAT3680
VP
TS
VSS
STAT
D1
R2
1k
BATT+
C2
10µF
VP
RT1
BATT-
TEMP
Battery
RT2
Pack
3680.2003.4.0.91
1