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AAT3683-2 Datasheet

  • AAT3683-2

  • 1A Linear Li-Ion Battery Charger

  • 450.51KB

  • 23頁

  • ANALOGICTECH

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PRODUCT DATASHEET
AAT3683
BatteryManager
TM
General Description
The AAT3683 BatteryManager is a highly integrated sin-
gle-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 7.5V.
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 maximum
possible battery charging current for the given set of
input to output power dissipation and ambient tempera-
ture 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 charg-
ing device, control system, and the battery under
charge. A status monitor output pin is provided to indi-
cate the battery charge status by directly driving an
external LED. An open-drain power source detection out-
put 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擄C to +85擄C temperature range.
1A Linear Li-Ion Battery Charger
Features
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USB or AC Adapter Input
Programmable from 100mA to 1A
4.0V to 7.5V Input Voltage Range
High Level of Integration with Internal:
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Charging Device
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Reverse Blocking Diode
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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
1渭A 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
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Applications
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Bluetooth Headsets, Headphones, Accessories
Cellular Phones
Digital Still Cameras
MP3, Portable Music, and Portable Media Players
Personal Data Assistants (PDAs) and Handheld
Computers
鈥?Other Li-Ion Battery-Powered Devices
Typical Application
ENABLE
EN
ENABLE
BATT+
BAT
C
BAT
IN
C
IN
TERM
VIN
EN
BATT+
BAT
C
BAT
R
T
TERM
VIN
C
IN
IN
BATT
BATT-
R
TERM
BATT
-
AAT3683-2
STAT
ADPP#
CT
C
T
GND
TS
AAT3683-4
TEMP
STAT1
STAT2
TS
ISET
GND
R
TERM
TEMP
ISET
R
SET
Battery
Pack
CT
C
T
R
SET
Battery
Pack
3683.2007.11.1.2
www.analogictech.com
1

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