AAT3685 Datasheet, PDF (4/23 Pages) Advanced Analogic Technologies – Lithium-Ion/Polymer Battery Charger

AAT3685
Lithium-Ion/Polymer Battery Charger
Electrical Characteristics¹
V_ADP = 5V, T_A = -25°C to +85°C, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol Description
Conditions
Min
Typ
Max Units
Operation
ADP/USB Input Voltage Range
4.0
5.5 V
V_UVLO
Under-Voltage Lockout
Rising Edge
Under-Voltage Lockout Hysteresis
3.0
V
150
mV
I_OP
I_SLEEP
I_Leakage
Operating Current
Sleep Mode Current
Reverse Leakage Current from
BAT Pin
CC Charge Current = 500mA
AAT3685: V_BAT = 4.25V
AAT3685-1: V_BAT = 4.25V
V_BAT = 4V, ADP/USB Pin
Open
0.75
1.5 mA
0.3
1.0 _μA
1
3
1.0
μA
Voltage Regulation
V_{BAT_EOC}¹ End of Charge Voltage Accuracy
4.158
4.2
4.242 V
ΔV_BAT/V_BAT EOC Voltage Tolerance
0.5
%
V_MIN
Preconditioning Voltage Threshold
2.8
3.0
3.15 V
V_RCH Battery Recharge Voltage Threshold
V_{BAT_EOC} - 0.1
V
V_{ADP/USB_CHR} Charge Reduction Regulation
No Connection on CHR Pin 4.3
4.5
4.64 V
V_CHR CHR Pin Voltage Accuracy
1.9
2.0
2.1 V
Current Regulation
I_CH
ΔI_CH/I_CH
Charge Current
Charge Current Regulation
Tolerance
50
1000 mA
10
%
V_SETH SETH Pin Voltage
V_SETL SETL Pin Voltage
K_IUH
Current Set Factor: I_CHARGE/I_SETH
K_IUL
Current Set Factor: I_CHARGE/I_SETL
Charging Devices
CC Mode
CC Mode
2.0
V
2.0
V
2000
2000
Charging MOSFET Transistor
R_{DS(ON)U On Resistance}
V_IN = 5.5V
0.4
0.5
0.65 Ω
1. The AAT3685 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.
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3685.2006.10.1.3