Data Sheet

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN5400 Family • Rev. 1.10 29
FAN5400 Family — USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
Table 19. MONITOR Register Bit Definitions
BIT#
NAME
STATE
Active When
0
1
MONITOR Address 10h
7
ITERM_CMP
V
CSIN
– V
BAT
< V
ITERM
V
CSIN
– V
BAT
> V
ITERM
Charging with TE=1
V
CSIN
– V
BAT
< 1mV
V
CSIN
– V
BAT
> 1mV
Charging with TE=0
6
VBAT_CMP
V
BAT
< V
SHORT
V
BAT
> V
SHORT
Charging
V
BAT
< V
LOWV
V
BAT
> V
LOWV
High-Impedance Mode
V
BAT
< UVLO
BST
V
BAT
> UVLO
BST
Boosting
5
LINCHG
Linear Charging Not Enabled
Linear Charging Enabled
Charging
4
T_120
T
J
< 120°C
T
J
> 120°C
3
ICHG
Charging Current Controlled by
I
CHARGE
Control Loop
Charging Current Not Controlled by
I
CHARGE
Control Loop
Charging
2
IBUS
I
BUS
Limiting Charging Current
Charge Current Not Limited by I
BUS
Charging
1
VBUS_VALID
V
BUS
Not Valid
V
BUS
is Valid
V
BUS
> V
BAT
0
CV
Constant Current Charging
Constant Voltage Charging
Charging