AAT2557 AnalogicTech, AAT2557 Datasheet - Page 6

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

Typical Characteristics – Battery Charger
6
1000
100
10
220
210
200
190
180
170
4.206
4.204
4.202
4.200
4.198
4.196
4.194
1
1
4
4.5
V
BAT
4.25
Constant Charging Current
Constant Charging Current vs.
End of Charge Battery Voltage
4.75
= 3.3V
vs. Set Resistor Values
4.5
V
BAT
vs. Supply Voltage
5
4.75
= 3.6V
Supply Voltage
10
(R
5.25
5
SET
R
V
V
SET
= 8.06kΩ Ω )
ADP
ADP
5.25
V
5.5
BAT
(kΩ Ω )
(V)
(V)
= 4V
5.5
R
R
5.75
SET
SET
100
5.75
= 8.06kΩ
= 31.6kΩ
6
6
6.25
6.25
1000
6.5
6.5
LDO Regulator for Portable Systems
500mA Battery Charger and 300mA
Constant Charging Current vs. Temperature
600
500
400
300
200
100
4.23
4.22
4.21
4.20
4.19
4.18
4.17
210
208
205
203
200
198
195
193
190
0
2.7
-50
-50
Charging Current vs. Battery Voltage
End of Charge Voltage Regulation
2.9
-25
-25
R
3.1
SET
vs. Temperature
(R
= 16.2kΩ
0
Temperature (°C)
Temperature (°C)
0
SET
(R
3.3
R
R
R
SET
(V
SET
SET
SET
= 8.06kΩ Ω )
ADP
V
= 3.24kΩ
= 5.36kΩ
= 8.06kΩ
= 8.06kΩ Ω )
BAT
3.5
25
25
= 5V)
(V)
R
3.7
SET
50
50
AAT2557
= 31.6kΩ
3.9
2557.2007.06.1.0
75
75
4.1
100
100
4.3