AAT2556 Datasheet, PDF (14/27 Pages) Advanced Analogic Technologies – Battery Charger and Step-Down Converter for Portable Applications

DATA SHEET
AAT2556
Battery Charger and Step-Down Converter for Portable Applications
Battery Charging System Operation Flow Chart
Enable
Power On Reset
No
Yes
Power Input
Voltage
V_ADP > V_UVLO
Yes
Shut Down
No
Recharge Test
V_RCH > V_BAT
Fault Conditions
Yes
Monitoring
OV, OT
No
Preconditioning
Test
V_MIN > V_BAT
No
Yes
Preconditioning
(Trickle Charge)
Constant
Yes
Current Phase Test
Yes
Current Charge
V_ADP > V_BAT
Mode
No
Voltage Phase Test
Yes
I_BAT > I_TERM
Constant
Voltage Charge
Mode
No
Charge Completed
Charge
Control
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
14
202177B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013