AAT3688AIWP-4.2-4-T1 AnalogicTech, AAT3688AIWP-4.2-4-T1 Datasheet - Page 2

• Manufacturer Part Number: AAT3688AIWP-4.2-4-T1
• Description: USB Port Lithium-Ion/Polymer Battery Charger
• Manufacturer: AnalogicTech

Pin Descriptions
Pin Configuration
2
2
BatteryManager
BatteryManager
Pin #
10
11
12
EP
1
2
3
4
5
6
7
8
9
USBSEL
Name
STAT2
STAT1
USBH
DATA
USBL
GND
USB
CHR
BAT
EN
TS
TM
TM
Ground
In/Out
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.
Ground connection.
Resistor divider to set USB voltage regulation for charge reduction mode. Leave this
pin open for default 4.5V USB regulation point. Tie to USB pin to disable this function.
Enable pin. Logic high enables the IC.
Connect to 10kΩ NTC thermistor.
Status report to microcontroller via serial interface, open-drain.
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.
When USB is present, use this pin to toggle between USBH and USBL charging levels.
Connect resistor here to set charge current for low-current USB port.
Connect resistor here to set charge current for high-current USB port.
Exposed paddle (bottom); connect to GND directly beneath package.
GND
CHR
USB
BAT
EN
TS
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1
2
3
4
5
6
TDFN33-12
(Top View)
USB Port Lithium-Ion/Polymer Battery Charger
USB Port Lithium-Ion/Polymer Battery Charger
12
11
10
9
8
7
USBH
USBL
USBSEL
STAT1
STAT2
DATA
PRODUCT DATASHEET
PRODUCT DATASHEET
AAT3688
AAT3688
3688.2007.12.1.6
3688.2007.12.1.6