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AAT3683 Datasheet, PDF (1/24 Pages) Advanced Analogic Technologies – 1A Linear Li-Ion Battery Charger | |||
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General Description
The AAT3683 BatteryManager is a highly integrat-
ed single-cell lithium-ion / polymer (Li-Ion) battery
charger that operates from a USB port or an AC
adapter input up to an input voltage of 6.5V.
The AAT3683 precisely regulates battery charge
voltage and current for 4.2V Li-Ion battery cells.
The battery charging current can be set by an
external resistor up to 1A.
Digital Thermal Loop Control maintains the maxi-
mum possible battery charging current for the given
set of input to output power dissipation and ambi-
ent temperature conditions.
Battery charge state is continuously monitored for
fault conditions. In the event of an over-current,
over-voltage, short-circuit, or over-temperature
condition, the device will shut down automatically,
thus protecting the charging device, control sys-
tem, and the battery under charge. A status mon-
itor output pin is provided to indicate the battery
charge status by directly driving an external LED.
An open-drain power source detection output is
provided to report the power supply status.
The AAT3683 is available in the Pb-free, thermally-
enhanced, space-saving 2.2x2.2mm 10-pin STDFN
(AAT3683-2 and -3) and 16-pin QFN33 (AAT3683-4)
packages and is specified for operation over the
-40°C to +85°C temperature range.
Typical Application
AAT3683
1A Linear Li-Ion Battery Charger
BatteryManagerâ¢
Features
⢠USB or AC Adapter Input
⢠Programmable from 100mA to 1A
⢠4.0V to 6.5V Input Voltage Range
⢠High Level of Integration with Internal:
â Charging Device
â Reverse Blocking Diode
â Current Sensing
⢠Digital Thermal Regulation
⢠Charge Current Programming (ISET)
⢠Charge Termination Current Programming (TERM)
⢠Charge Timer (CT)
⢠Battery Temperature Sensing (TS)
⢠TS Pin Open Detection
⢠Automatic Recharge Sequencing
⢠Automatic Trickle Charge for Battery Pre-
Conditioning (no trickle charge option available)
⢠Full Battery Charge Auto Turn-Off / Sleep
Mode / Charge Termination
⢠1µA Max. Shutdown Current
⢠Over-Voltage and Over-Current Protection
⢠Emergency Thermal Protection
⢠Power On Reset and Soft Start
⢠2.2x2.2mm STDFN-10 (AAT3863-2 and -3)
and QFN33-16 (AAT3683-4) Packages
Applications
⢠Bluetooth Headsets, Headphones, Accessories
⢠Cellular Phones
⢠Digital Still Cameras
⢠MP3, Portable Music, and Portable Media
Players
⢠Personal Data Assistants (PDAs) and
Handheld Computers
⢠Other Li-Ion Battery-Powered Devices
ENABLE
VIN
CIN
CT
EN
IN
BAT
TERM
AAT3683-2
STAT
ADPP#
CT
GND
TS
ISET
RTERM
RSET
BATT+
CBAT
BATT-
TEMP
Battery
Pack
ENABLE
VIN
CIN
CT
EN
IN
BAT
TERM
AAT3683-4
STAT 1
STAT 2
CT
GND
TS
ISET
RT
RTERM
RSET
BATT+
CBAT
BATT-
TEMP
Battery
Pack
3683.2007.06.1.0
1
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