USB Port/AC Adapter
Lithium-Ion/Polymer Battery Charger
Electrical Characteristics
1
V
ADP
= 5V, T
A
= -25°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C.
Symbol
Operation
USB, ADP
V
ADPP
V
U_DSBL
V
UVLO
I
OP
I
SLEEP
I
Leakage
AAT3686
Description
USB Port or Adapter Voltage Range
Adapter Present Indicator
Threshold Voltage
ADP Voltage Level to Disable
USB Charging
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Operating Current
Sleep Mode Current
Conditions
Min
4.0
Typ
Max Units
5.5
V
V
V
V
mV
mA
µA
µA
4.242
3.15
4.64
2.1
1500
V
%
V
V
V
V
mA
%
V
V
V
USB Present
4.25
4.25
4.5
4.5
3.0
150
0.75
0.3
1
1.0
4.7
4.7
Rising Edge
CC Charge Current = 500mA
AAT3686: V
BAT
= 4.25V
AAT3686-1: V
BAT
= 4.25V
V
BAT
= 4V, USB,
ADP Pins Open
4.158
2.8
No Connection on CHR Pin
4.3
1.9
100
CC Mode
CC Mode
CC Mode
1.5
1.0
3
Reverse Leakage Current from
BAT Pin
Voltage Regulation
V
BAT_EOC
1
End of Charge Voltage Accuracy
ΔV
BAT
/V
BAT
EOC Voltage Tolerance
V
MIN
Preconditioning Voltage Threshold
V
RCH
Battery Recharge Voltage Threshold
V
USB_CHR
USB Charge Reduction Regulation
V
CHR
CHR Pin Voltage Accuracy
Current Regulation
I
CH
Charge Current
ΔI
CH
/I
CH
Charge Current Regulation Tolerance
V
ADPSET
ADPSET Pin Voltage
V
USBH
USBH Pin Voltage
V
USBL
USBL Pin Voltage
K
IA
Current Set Factor: I
CHARGE
/I
ADPSET
K
IUH
Current Set Factor: I
CHARGE
/I
USBH
K
IUL
Current Set Factor: I
CHARGE
/I
USBL
Charging Devices
Adapter Charging Transistor
R
DS(ON)A
On Resistance
USB Charging Transistor
R
DS(ON)U
On Resistance
4.2
0.5
3.0
V
BAT_EOC
- 0.1
4.5
2.0
10
2.0
2.0
2.0
4000
2000
2000
0.2
0.4
0.25
0.5
0.35
0.65
V
IN
= 5.5V
V
IN
= 5.5V
Ω
Ω
1. The AAT3686 output charge voltage is specified over the 0° to 70°C ambient temperature range; operation over the -25°C to +85°C
temperature range is guaranteed by design.
4
3686.2006.10.1.9
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
