AAT3690IWP-4.2-T1 Advanced Analog Technology, Inc., AAT3690IWP-4.2-T1 Datasheet - Page 2

• Manufacturer Part Number: AAT3690IWP-4.2-T1
• Description: 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger
• Manufacturer: Advanced Analog Technology, Inc.

Pin Descriptions
Pin Configuration
2
Pin #
1, 10
EP
11
12
2
3
4
5
6
7
8
9
USBSET
ADPSET
Name
STAT2
STAT1
GND
USB
ADP
BAT
EN
TS
CT
Ground
In/Out
In/Out
In/Out
In/Out
In/Out
Type
Out
Out
In
In
In
Function
USB power supply input.
Battery charging and sensing.
Adapter power supply input.
Ground connection.
Enable pin. Logic high enables the IC. When open, this pin is internally
pulled up to the higher voltage of ADP and USB inputs.
Connect to 10kΩ NTC thermistor. When TS is open, the battery tempera-
ture sensing function is disabled.
Battery charge status indicator pin to drive an LED: active low, open-drain.
Battery charge status indicator pin to drive an LED: active low, open-drain.
Timing capacitor to adjust internal watchdog timer. Set maximum charge
time for adapter powered CC and CV charge modes. The watchdog timer
only sets the timers for adapter battery charging; there is no timeout for the
battery charging from the USB input. If timing function is not needed, termi-
nate this pin to ground.
Connect a resistor between this pin and GND to set USB charging current.
Connect a resistor between this pin and GND to set adapter charging
current.
Exposed paddle (bottom); connect to GND directly beneath package.
GND
USB
ADP
BAT
EN
TS
1
2
3
4
5
6
TDFN33-12
(Top View)
Lithium-Ion/Polymer Battery Charger
12
11
10
9
8
7
ADPSET
USBSET
USB
CT
STAT1
STAT2
1.0A USB Port/Adapter
3690.2007.01.1.2