AAT2556 Datasheet, PDF (5/27 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
Electrical Characteristics¹
V_ADP = 5V; T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C.
Symbol Description
Battery Charger
Operation
V_ADP
V_UVLO
Adapter Voltage Range
Under-Voltage Lockout (UVLO)
UVLO Hysteresis
I_OP
Operating Current
I_SHUTDOWN
Shutdown Current
I_LEAKAGE
Reverse Leakage Current from BAT Pin
Voltage Regulation
V_{BAT_EOC}
End of Charge Accuracy
V_CH/V_CH Output Charge Voltage Tolerance
V_MIN
Preconditioning Voltage Threshold
V_RCH
Battery Recharge Voltage Threshold
Current Regulation
I_CH
Charge Current Programmable Range
I_CH/I_CH Charge Current Regulation Tolerance
V_SET
ISET Pin Voltage
K_{I_A}
Current Set Factor: I_CH/I_SET
Charging Devices
R_DS(ON)
Charging Transistor On Resistance
Logic Control/Protection
V_EN(H)
V_EN(L)
V_STAT
I_STAT
V_OVP
I_TK/I_CHG
I_TERM/I_CHG
Input High Threshold
Input Low Threshold
Output Low Voltage
STAT Pin Current Sink Capability
Over-Voltage Protection Threshold
Pre-Charge Current
Charge Termination Threshold Current
Conditions
Rising Edge
Charge Current = 200mA
V_BAT = 4.25V, EN = GND
V_BAT = 4V, ADP Pin Open
Measured from V_{BAT_EOC}
V_ADP = 5.5V
STAT Pin Sinks 4mA
I_CH = 100mA
Min Typ Max Units
4.0
6.5
V
3
4
V
150
mV
0.5
1
mA
0.3
1
μA
0.4
2
μA
4.158 4.20 4.242
V
0.5
%
2.85
3.0
3.15
V
-0.1
V
15
500
mA
10
%
2
V
800
0.9
1.1

1.6
V
0.4
V
0.4
V
8
mA
4.4
V
10
%
10
%
1. The AAT2556 output charge voltage is specified over the 0° to 70°C ambient temperature range; operation over the -25°C to +85°C temperature range is guaranteed by
design.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202177B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013
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