AAT3783_12 Datasheet, PDF (2/20 Pages) Skyworks Solutions Inc. – 1-A Linear Li-Ion/Polymer Battery Charger with 28V Over-Voltage Protection

DATA SHEET
AAT3783
1-A Linear Li-Ion/Polymer Battery Charger with 28V Over-Voltage Protection
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15, 16
Name
INCHR
BATS
BAT
TS
ENOVP
OVP
FLT
STAT
ADPP
CT
ENCHR
TERM
GND
ISET
IN
Type
I/O
I
O
I/O
I
I
O
O
O
I
I
I
I/O
I
I
Function
Internal connection between the output of the OVP stage and the input of the battery
charger. Decouple with 2.2μF capacitor.
Battery sense pin. Connect directly to the battery's + terminal. If not used, BATS
must be connected to BAT.
Connect to Lithium-Ion battery.
Battery temperature sense pin.
Active low enable for OVP stage.
Over-voltage protection threshold pin. Leave open for the default 6.5V setting; con-
nect to a resistor to adjust the OVP setting (see Application Information).
Over-voltage fault flag, open drain.
Charge status pin, open drain.
Input power-good (USB port/adapter present indicator) pin, open-drain.
Charge timer programming input pin (no timer if grounded).
Active high enable pin (with internal pull-down) for charging circuitry.
Charge termination current programming input pin (internal default 10% termina-
tion current if TERM is open).
Connect to power ground.
Charge current programming input pin.
Input from USB port/ adapter connector.
Pin Configuration
TDFN34-16
(Top View)
INCHR ¹
BATS ²
BAT ³
TS ⁴
ENOVP ⁵
OVP ⁶
FLT ⁷
STAT ⁸
16 _IN
EP1
15 _IN
14 _ISET
13 _GND
EP2
12 _TERM
11 ENCHR
10 _CT
9 _ADPP
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
2
201903B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012