Battery Charger. AAT3683 Datasheet

AAT3683 Charger. Datasheet pdf. Equivalent

Part AAT3683
Description 1A Linear Li-Ion Battery Charger
Feature AAT3683 1A Linear Li-Ion Battery Charger General Description www.datasheet4u.com Features • • • • .
Manufacture Advanced Analogic Technologies
Total Page 24 Pages
Datasheet
Download AAT3683 Datasheet



AAT3683
General Description
The AAT3683 BatteryManager is a highly integrat-
www.datasheeedt4sui.ncogmle-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
BatteryManager
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:
— Charging Device
— Reverse Blocking Diode
— 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



AAT3683
AAT3683
1A Linear Li-Ion Battery Charger
Pin Descriptions
www.datasheet4u.comPin
AAT3683-2,
AAT3683-3 AAT3683-4
1 n/a
n/a 16
22
33
44
5 n/a
n/a 5
67
76
8 15
9 11
10 12
1, 8, 9, 10,
n/a 13, 14
EP EP
Name
STAT
STAT1
TERM
GND
CT
ADPP#
STAT2
TS
BAT
IN
ISET
EN
N/C
Type
O
O
I
I
O
O
I/O
O
I
I
I
Function
Charge status pin, open drain.
Charge status pin, open drain.
Charge termination current programming input pin (internal default
10% termination current if TERM is open).
Ground.
Charge timer programming input pin (no timer if grounded).
Input supply power-good status pin, open drain.
Charge status pin, open drain.
Battery temperature sense pin. (Leave this TS pin open to disable
this function in AAT3683-2).
Connect to Li-Ion battery.
Input from USB port/AC adapter connector.
Charge current programming input pin.
Active high enable pin (with internal pull-down).
Not connected.
Exposed paddle (bottom); connect to ground as closely as possible
to the device.
Pin Configuration
AAT3683-2,
AAT3683-3
STDFN2.2x2.2-10
(Top View)
AAT3683-4
QFN33-16
(Top View)
STAT
TERM
GND
CT
ADPP#
1
2
3
4
5
10 EN
8 ISET
8 IN
7 BAT
6 TS
N/C 1
TERM 2
GND 3
CT 4
12 EN
11 ISET
10 N/C
9 N/C
2 3683.2007.06.1.0





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