AAT2550
Total Power Solution for Portable Applications
Electrical Characteristics1
VADP = 5V; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Battery Charger
Conditions
Min
Typ
Max Units
VADP
Adapter Voltage Range
4.0
5.5
V
V
Under-Voltage Lockout
UVLO Hysteresis
Rising Edge
3.0
150
0.75
0.3
VUVLO
mV
mA
µA
µA
µA
V
IQ
Quiescent Current
ICHARGE = 100mA
VBAT = 4.25V
3.0
1.0
ISLEEP
ILEAKAGE
ISHDN
Sleep Mode Current
Reverse Leakage Current
Shutdown Current
VBAT = 4V, ADP Pin Open
VEN = GND
1.0
1.0
2
VBAT EOC
End of Charge Voltage Accuracy
4.158
2.80
100
4.2
0.5
3.0
4.242
_
ΔVCH/VCH Output Charge Voltage Tolerance
%
VMIN
VRCH
ICH
Preconditioning Voltage Threshold
Battery Recharge Voltage Threshold
Charge Current
3.15
V
VBAT EOC - 0.1
V
_
1000
mA
%
ΔICH/ICH
VADPSET
KIA
Charge Current Regulation Tolerance
ADPSET Pin Voltage
10
2.0
Constant Current Mode
V
Current Set Factor: ICH/IADPSET
Charger Pass Device
4000
0.25
3.0
RDS(ON)
TC
VIN = 5.5V
0.20
0.35
0.4
Ω
Hour
Minute
Hour
V
Constant Current Mode Time-Out
Preconditioning Time-Out
Constant Voltage Mode Time-Out
Output Low Voltage
CT = 100nF, VADP = 5.5V
CT = 100nF, VADP = 5.5V
CT = 100nF, VADP = 5.5V
ISINK = 4mA
TP
25
TV
3.0
VSTAT
ISTAT
STAT Sink Current
8.0
4.4
10
mA
V
VOVP
ITK/ICH
ITERM/ICH
ITS
Over-Voltage Protection
Pre-Charge Current
%
Charge Termination Threshold Current
Current Source from TS Pin
7.5
80
%
70
90
µA
Threshold
310
330
15
350
TS1
TS2
TS Hot Temperature Fault
TS Cold Temperature Fault
mV
Hysteresis
Threshold
2.2
2.3
10
2.4
0.4
V
mV
mA
V
Hysteresis
IDATA
VDATA(H)
VDATA(L)
SQPULSE
TPeriod
FDATA
DATA Pin Sink Current
Input High Threshold
DATA Pin is Active Low
3.0
1.6
Input Low Threshold
V
Status Request Pulse Width
System Clock Period
200
ns
µs
kHz
°C
°C
°C
°C
50
20
Data Output Frequency
Thermal Loop Regulation
Thermal Loop Entering Threshold
TREG
90
TLOOP IN
110
85
_
TLOOP OUT Thermal Loop Exiting Threshold
_
TSD
Over-Temperature Shutdown Threshold
145
1. The AAT2550 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. End of Charge Voltage Accuracy is specified over the 0° to 70°C ambient temperature range.
2550.2006.07.1.0
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
