AAT2601B Datasheet, PDF (20/39 Pages) Skyworks Solutions Inc. – Total Power Solution for Portable Applications

Functional Block Diagram
SYSOUT
500mΩ
SYSOUT
LDO
CHGIN
DATA SHEET
AAT2601B
Total Power Solution for Portable Applications
100 mΩ
BAT
ENBAT
USE_USB
Charger
Control
Ref
ADPP
STAT
ISET
TS
CT
SDA
SCL
EN_TEST
EN_HOLD
EN_KEY
ON_KEY
EN2
EN3
EN4
EN5
AVIN2
I²C
and
Enable
Control
UVLO
VIN
BUCK
Ref
Enable
VIN
REF
RESET
PVIN
LX
OUTBUCK
PGND
CNOISE
AVIN1
AGND
Functional Description
The AAT2601B is a complete power management solu-
tion. It seamlessly integrates an intelligent, stand-alone
CC/CV (Constant Current/Constant Voltage), linear-mode
single-cell battery charger with one step-down Buck con-
verter and five low-dropout (LDO) regulators to provide
power from either a wall adapter or a single-cell Lithium
Ion/Polymer battery. Internal load switches allow the LDO
regulators and DC-DC converter to operate from the best
available power source of either an AC wall adapter, USB
port supply or battery.
If only the battery is available, then the voltage regula-
tors and converter are powered directly from the battery
through a 100mΩ load switch. (The charger is put into
sleep mode and draws less than 1μA quiescent current.)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
20
202181B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013