AAT3698 Datasheet, PDF (2/21 Pages) Skyworks Solutions Inc. – 1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package

DATA SHEET
AAT3698
1.6A Linear Li-Ion Battery Charger in a 3x3 TDFN Package
Pin Description
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
EP
Name
INCHR
IN
LDOOUT
POK
STAT
ABO
TERM
GND
EN
ISET
IC
NOBAT
ABI
BAT
Type
I/O
I
O
O
O
O
I
I
I
I
I
I
I
O
Function
OVP output switch and battery charger input; decouple to GND with 1μF capacitor.
Input from USB port or adapter connector.
5V/50mA LDO output through OVP device; bypass to GND with 1μF capacitor.
Power OK flag pin; open drain, active low.
Charge status indicator pin; open drain, active low.
Auto booting output.
Connect the R_TERM resistor between the TERM pin and ground to set the charge termination
current. When the TERM pin is connected to INCHR, charge current termination level is set
to 10% of the programmed fast charge current.
Power ground.
Enable pin, active low. Internally connected to ground through a 200kΩ pull-down resistor.
Connect R_SET resistor to this pin to set charging current. Connect a 10kΩ resistor from this
pin to the system to monitor this pin's voltage.
Internally connected; connect this pin to ground.
No battery detection input. If the NOBAT pin is left unconnected, charging is disabled. Inter-
nally pulled to LDOOUT pin through a 1.6MΩ pull-up resistor.
Auto booting input. Internally connected to ground through a 200kΩ pull-down resistor.
Connect to Li-Ion battery.
Exposed paddle; connect to ground.
Pin Configuration
TDFN33-14
(Top View)
INCHR ¹
IN ²
LDOOUT ³
POK ⁴
STAT ⁵
ABO ⁶
TERM ⁷
14 _BAT
13 _ABI
12 _NOBAT
11 _IC
10 _ISET
9 _EN
8 _GND
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
2
201902B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012