PRODUCT DATASHEET
AAT2552178
SystemPowerTM
Total Power Solution for Portable Applications
Electrical Characteristics1
VADP = 5V; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min
Typ
Max
Units
Battery Charger Operation
VADP
Adapter Voltage Range
Under-Voltage Lockout (UVLO)
UVLO Hysteresis
Operating Current
Shutdown Current
4.0
3
6.5
4
V
V
mV
mA
μA
μA
Rising Edge
VUVLO
150
0.5
0.3
0.4
IOP
ISHUTDOWN
ILEAKAGE
Charge Current = 200mA
VBAT = 4.25V, VEN_BAT = GND
VBAT = 4V, ADP Pin Open
1
1
2
Reverse Leakage Current from BAT Pin
Voltage Regulation
VBAT_EOC End of Charge Accuracy
VMIN
4.158
2.8
4.20
3.0
-0.1
4.242
3.2
V
V
V
Preconditioning Voltage Threshold
Battery Recharge Voltage Threshold
VRCH
Measured from VBAT_EOC
ICHARGE = 200mA
Current Regulation
ICH
ΔICH/ICH
VSET
Charge Current Programmable Range
Charge Current Regulation Tolerance
ISET Pin Voltage
30
-10
500
10
mA
%
V
2
KI_A
Current Set Factor: ICH/ISET
800
Charging Devices
Ω
RDS(ON)
Charging Transistor On Resistance
VADP = 5.5V
0.5
0.8
Logic Control/Protection
VEN(H)
VEN(L)
VSTAT
ISTAT
VOVP
Enable Threshold High
Enable Threshold Low
Output Low Voltage
STAT Pin Current Sink Capability
Over-Voltage Protection Threshold
Pre-Charge Current
1.6
V
V
V
mA
V
%
%
0.4
0.4
8
STAT Pin Sinks 4mA
ICH = 100mA
4.4
10
10
ITK/ICHG
ITERM/ICHG
Charge Termination Threshold Current
1. The AAT2552 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
w w w . a n a l o g i c t e c h . c o m
2552.2008.02.1.2
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