AAT3692 Datasheet, PDF (12/19 Pages) Skyworks Solutions Inc. – Dual Input 1.6A Linear Charger with 28V OVP in a 3x4 TDFN Package

DATA SHEET
AAT3692
Dual Input 1.6A Linear Charger with 28V OVP in a 3x4 TDFN Package
System Operation Flowchart
Power On Reset
OVP Switch Off
Yes
NOBAT Indicates No
Battery
No
Enable
No
Adapter Charge
USBCH =
ADPCH = 0V
Yes
OVP (7.2V) ≥
No
VUSB or VADP ≥
VUVLO_ADP or VUVLO_USB
(3V)
Yes
USBCH = USB,
ADPCH = ADP
No
Recharge Test
VRCH > VBAT
Preconditioning
Test
VMIN > VBAT
Yes
Preconditioning
(Trickle Charge)
No
Yes
Current Phase Test
Yes
Constant
Current Charge
VIN > VBAT_EOC
Mode
No
VADPCH > VUVLO_ADPCH
(3.5V)
Yes
No
No
VUSBCH > VUVLO_USBCH
(3.5V)
Voltage Phase Test
Yes
IBAT > ITERM
Constant
Voltage Charge
Mode
No
Charge Completed
USB Charge
No
Yes
Preconditioning
Test
VMIN > VBAT
Yes
Preconditioning
(Trickle Charge)
No
Recharge Test
VRCH > VBAT
Yes
Current Phase Test
Yes
Constant
Current Charge
VIN > VBAT_EOC
Mode
No
Auto Charge
Reduction
Loop
Control
Yes
VUSBCH < 4.5V
No
Voltage Phase Test
Yes
IBAT > ITERM
Constant
Voltage Charge
Mode
No
Charge Completed
Thermal Loop
Current
Reduction in
C.C. Mode
Yes
Device Thermal
Loop Monitor
T_J > 115°C
No
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
12
201895B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 27, 2012