AAT2557 AnalogicTech, AAT2557 Datasheet - Page 5

• Manufacturer Part Number: AAT2557
• Description: 500mA Battery Charger and 300mA LDO Regulator for Portable Systems
• Manufacturer: AnalogicTech

Electrical Characteristics
V
1. The AAT2557 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
2557.2007.06.1.0
Battery Charger
Operation
Voltage Regulation
Current Regulation
Charging Devices
Logic Control/Protection
ADP
by design, characterization, and correlation with statistical process controls.
I
I
ΔV
Symbol
SHUTDOWN
V
TERM
I
I
ΔI
R
LEAKAGE
TK
V
BAT _ EOC
V
V
V
V
V
V
V
V
I
K
DS(ON)
CH
= 5V; T
CH
STAT
UVLO
I
I
EN(H)
EN(L)
STAT
RCH
/I
ADP
OP
CH
SET
OVP
MIN
I _ A
CHG
/I
/V
/I
CHG
CH
CH
A
= -40°C to +85°C, unless otherwise noted. Typical values are T
Description
Adapter Voltage Range
Under-Voltage Lockout (UVLO)
UVLO Hysteresis
Operating Current
Shutdown Current
Reverse Leakage Current from BAT Pin V
End of Charge Accuracy
Output Charge Voltage Tolerance
Preconditioning Voltage Threshold
Battery Recharge Voltage Threshold
Charge Current Programmable Range
Charge Current Regulation Tolerance
ISET Pin Voltage
Current Set Factor: I
Charging Transistor On Resistance
Enable Threshold High
Enable Threshold Low
Output Low Voltage
STAT Pin Current Sink Capability
Over-Voltage Protection Threshold
Pre-Charge Current
Charge Termination Threshold Current
CH
/I
SET
1
Conditions
Rising Edge
Charge Current = 200mA
V
Measured from V
V
STAT Pin Sinks 4mA
I
CH
BAT
BAT
ADP
= 100mA
LDO Regulator for Portable Systems
= 4.25V, EN_BAT = GND
= 4V, ADP Pin Open
= 5.5V
500mA Battery Charger and 300mA
BAT _ EOC
A
= 25°C.
4.158
2.85
Min
4.0
1.6
15
3
4.20
Typ
150
-0.1
800
0.5
0.3
0.4
0.5
3.0
0.9
4.4
10
10
10
2
AAT2557
4.242
Max Units
3.15
500
6.5
1.1
0.4
0.4
4
1
1
2
8
mV
mA
mA
mA
µA
µA
%
%
%
%
Ω
V
V
V
V
V
V
V
V
V
V
5