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AAT3683IOQ-4.2-3-T1 Datasheet

  • AAT3683IOQ-4.2-3-T1

  • 1A Linear Li-Ion Battery Charger

  • 588.26KB

  • 24頁

  • ANALOGICTECH

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AAT3683
1A Linear Li-Ion Battery Charger
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擄C to +85擄C temperature range.
Features
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BatteryManager
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USB or AC Adapter Input
Programmable from 100mA to 1A
4.0V to 6.5V Input Voltage Range
High Level of Integration with Internal:
鈥?Charging Device
鈥?Reverse Blocking Diode
鈥?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碌A(chǔ) 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
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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
Other Li-Ion Battery-Powered Devices
Typical Application
鈥?/div>
ENABLE
EN
ENABLE
BATT+
BAT
C
BAT
TERM
EN
BATT+
BAT
C
BAT
R
T
TERM
VIN
C
IN
IN
VIN
C
IN
IN
BATT
BATT-
R
TERM
BATT
-
AAT3683-2
STAT
ADPP#
CT
C
T
GND
TS
ISET
AAT3683-4
STAT1
R
TERM
TEMP
TS
ISET
GND
R
SET
TEMP
STAT2
CT
R
SET
Battery
Pack
C
T
Battery
Pack
3683.2007.06.1.0
1

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