AAT3686
USB Port/AC Adapter
Lithium-Ion/Polymer Battery Charger
Typical Characteristics
Adapter Mode Supply Current
vs. ADPSET Resistor
USB Charge Current vs. Time
(USBH; USBH = 8.06kΩ)
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
USB VBUS
(200mV/div)
USB Charge
Current
(200mA/div)
Charge Reduction
Mode Activated
Constant Current
Pre-Conditioning
USB Peripheral
Current
Consumption
(200mA/div)
0
2
4
6
8
10
1
10
100
1000
Time (sec)
ADPSET Resistor (kΩΩ)
Counter Timeout vs. Temperature
(CT = 0.1µF)
CT Pin Capacitance vs. Counter Timeout
2.0
10
8
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
6
Precondition Timeout
4
2
0
-2
-4
-6
-8
-10
Precondition + Constant Current Timeout
or Constant Voltage Timeout
-50
-25
0
25
50
75
100
0
2
4
6
8
10
Temperature (°°C)
Time (hours)
Temperature Sense Output Current
vs. Temperature
88
86
84
82
80
78
76
74
72
-50
-25
0
25
50
75
100
Temperature (°°C)
3686.2006.10.1.9
9
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
