AAT3690 Datasheet, PDF (2/20 Pages) Advanced Analogic Technologies – 1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger

AAT3690
1.0A USB Port/Adapter
Lithium-Ion/Polymer Battery Charger
Pin Descriptions
Pin #
1, 10
2
3
4
5
Name
USB
BAT
ADP
GND
EN
Type
In
In/Out
In
Ground
In
6
TS
In/Out
7
STAT2
Out
8
STAT1
Out
9
CT
In/Out
11
USBSET
In/Out
12
ADPSET
In/Out
EP
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.
Pin Configuration
TDFN33-12
(Top View)
USB ¹
BAT ²
ADP ³
GND ⁴
EN ⁵
TS ⁶
12 _ADPSET
11 _USBSET
10 _USB
9 _CT
8 _STAT1
7 _STAT2
2
3690.2007.01.1.2