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AAT3688 Datasheet(PDF) 2 Page - Advanced Analog Technology, Inc.

Part # AAT3688
Description  USB Port Lithium-Ion/Polymer Battery Charger
PDF  23 Pages
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Manufacturer  AAT [Advanced Analog Technology, Inc.]
Direct Link  http://www.aatech.com.tw
Logo AAT - Advanced Analog Technology, Inc.

AAT3688 Datasheet(HTML) 2 Page - Advanced Analog Technology, Inc.

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AAT3688
USB Port Lithium-Ion/Polymer Battery Charger
2
3688.2006.10.1.5
Pin Descriptions
Pin Configuration
TDFN33-12
(Top View)
USB
BAT
GND
1
CHR
EN
TS
USBH
USBL
USBSEL
STAT1
STAT2
DATA
2
3
4
5
6
12
11
10
9
8
7
Pin #
Name
Type
Function
1
USB
In
USB power supply input.
2
BAT
In/Out
Battery charging and sensing.
3
GND
Ground
Ground connection.
4
CHR
In/Out
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.
5
EN
In
Enable pin. Logic high enables the IC.
6
TS
In/Out
Connect to 10k
Ω NTC thermistor.
7
DATA
In/Out
Status report to microcontroller via serial interface, open-drain.
8
STAT2
Out
Battery charge status indicator pin to drive an LED: active low, open-drain.
9
STAT1
Out
Battery charge status indicator pin to drive an LED: active low, open-drain.
10
USBSEL
In
When USB is present, use this pin to toggle between USBH and USBL
charging levels.
11
USBL
In/Out
Connect resistor here to set charge current for low-current USB port.
12
USBH
In/Out
Connect resistor here to set charge current for high-current USB port.
EP
Exposed paddle (bottom); connect to GND directly beneath package.



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