Battery Charger. AAT3663 Datasheet

AAT3663 Charger. Datasheet pdf. Equivalent

Part AAT3663
Description 1A Linear Li-Ion Battery Charger
Feature AAT3663 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications General Description w.
Manufacture Advanced Analogic Technologies
Total Page 22 Pages
Datasheet
Download AAT3663 Datasheet



AAT3663
AAT3663
1A Linear Li-Ion Battery Charger
for Single and Dual Cell Applications
General Description
BatteryManager
Features
www.datasheTeht4eu.AcoAmT3663 BatteryManageris a member of
AnalogicTech’s Total Power Management IC
family. This device is an integrated single/dual cell
Lithium-Ion (Li-Ion) / polymer battery charger IC
designed to operate from USB ports or an AC
adapter inputs up to an input voltage of 13.2V.
AAT3663 precisely regulates battery charge volt-
age and current for 4.2V and 8.4V Li-Ion battery
cells. The battery charging current is user pro-
grammed up to 1A by an external resistor.
Battery charge state is continuously monitored for
fault conditions. A Digital Thermal Loop Control
maintains the maximum possible battery charging
current for the optimum set of input to output power
dissipation and ambient temperature conditions. In
the event of an over-current, over-voltage, short-
circuit, or over-temperature fault condition, the
device will automatically shut down, thus protecting
the charger and the battery under charge.
Two status monitor output pins are provided to indi-
cate the battery charge status by directly driving
external LEDs. Additionally, an open-drain power-
source detection output (ADPP#) is provided to
report presence of an input power supply
The AAT3663 is available in a thermally enhanced,
space-saving, 14-pin 3x3 mm TDFN package and
is specified for operation over the -40°C to +85°C
temperature range.
Typical Application
• 4.0V ~ 13.2V Input Voltage Range
• Compatible with USB or AC Adapter Sources
• Programmable Fast Charge Current from
100mA to 1A
• Programmable Charge Termination Current
• Digital Thermal Loop Charge Reduction
• Less Than 0.4µA Battery Leakage Current
• Programming Charge Timer
• Battery Temperature Sensing
• Battery Temp Sense Open Circuit Detection
• Automatic Recharge Sequencing
• Automatic Trickle Charge for Battery
Pre-Conditioning
• Automatic Charge Termination
Shutdown/Sleep Mode
• Less than 1µA Shutdown Current
• Over-Voltage and Over-Current Protection
• Power On Reset and Soft Start
• 3x3mm 14-pin TDFN Package
Applications
• Bluetooth™ Headset
• Cell Phones
• Digital Still Cameras
• MP3 Players
• Personal Data Assistants (PDAs)
• Other Li-Ion Battery Powered Devices
ON/OFF
VIN
EN BATS
IN BAT
AAT3663
10μF
BATT +
BATT-
STAT1
TS
STAT2
TERM
ADPP#
ISET
GND CT
TEMP
CT
RSET
RTERM
Battery
Pack
3663.2007.10.1.0
1



AAT3663
AAT3663
1A Linear Li-Ion Battery Charger
for Single and Dual Cell Applications
Pin Description
www.datasPhienet#4u.coSmymbol
1 EN
2 CT
3 ISET
4 GND
5 TS
6 BATS
7 BAT
8, 9 IN
10 STAT1
11 STAT2
12 ADPP#
13 TERM
14 N/C
Type
I
I
I
I/O
I/O
I
O
I
O
O
O
I
Function
Enable pin, Active high with internal pull-down. If not used, pull high to the IN pin to
continuously enable the charger IC when input power is applied.
Charge timer programming pin. A 0.1µF ceramic capacitor should be connected
between this pin and GND. Connect directly to GND to disable the timer function.
Charge current programming pin. Connect a resistor between this pin and GND to
program the constant fast charge current.
IC ground connection. Connect this pin to power ground.
Battery temperature sense input. Connect the Li-Ion battery pack NTC resistor termi-
nal to this pin.
Battery voltage sense pin. Connect this pin directly to the positive battery terminal. If
this function is not used, connect to the BAT pin directly.
Battery charge output pin. Connect to the positive battery terminal.
Power supply input pin. Connect the input USB port or Adapter power source to this pin
Charge status pin, open-drain output. Connect the STAT1 LED with a series ballast
resistor between IN and this pin.
Charge status pin, open-drain output. Connect the STAT2 LED with a series ballast
resistor between IN and this pin.
Input supply power-good status pin, open-drain output. Connect the ADPP# status
LED with a series ballast resistor between IN and this pin.
Charge termination current programming input pin. Connect a resistor between this
pin and GND to program the charge termination current. When TERM is open, the
termination current is 10% (default sertting) of the set maximum charge current.
No connection.
Pin Configuration
TDFN33-14
(Top View)
EN 1
CT 2
ISET 3
GND 4
TS 5
BATS 6
BAT 7
14 N/C
13 TERM
12 ADPP#
11 STAT2
10 STAT1
9 IN
8 IN
2 3663.2007.10.1.0





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