Data Sheet

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN5400 Family • Rev. 1.10 8
FAN5400 Family — USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
Electrical Specifications
Unless otherwise specified: according to the circuit of Figure 1; recommended operating temperature range for T
J
and T
A
;
V
BUS
=5.0 V; HZ_MODE; OPA_MODE=0; (Charge Mode); SCL, SDA, OTG=0 or 1.8 V; and typical values are for T
J
=25°C.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Boost Mode Operation (OPA_MODE=1, HZ_MODE=0)
V
BOOST
Boost Output Voltage at VBUS
2.5 V < V
BAT
< 4.5 V, I
LOAD
from 0 to
200 mA
4.80
5.07
5.17
V
2.7 V < V
BAT
< 4.5 V, I
LOAD
from 0 to
200 mA
4.85
5.07
5.17
I
BAT(BOOST)
Boost Mode Quiescent Current
PFM Mode, V
BAT
=3.6 V, I
OUT
=0
140
300
A
I
LIMPK(BST)
Q2 Peak Current Limit
1100
1380
1660
mA
UVLO
BST
Minimum Battery Voltage for Boost
Operation
While Boost Active
2.42
V
To Start Boost Regulator
2.58
2.70
VBUS Load Resistance
R
VBUS
VBUS to PGND Resistance
Normal Operation
1500
K
Charger Validation
100

Protection and Timers
VBUS
OVP
VBUS Over-Voltage Shutdown
V
BUS
Rising
6.09
6.29
6.49
V
Hysteresis
V
BUS
Falling
100
mV
I
LIMPK(CHG)
Q1 Cycle-by-Cycle Peak Current
Limit
Charge Mode
2.3
A
V
SHORT
Battery Short-Circuit Threshold
V
BAT
Rising
1.95
2.00
2.05
V
Hysteresis
V
BAT
Falling
100
I
SHORT
Linear Charging Current
V
BAT
< V
SHORT
20
30
40
mA
T
SHUTDWN
Thermal Shutdown Threshold
(7)
T
J
Rising
145
°C
Hysteresis
(7)
T
J
Falling
10
T
CF
Thermal Regulation Threshold
(7)
Charge Current Reduction Begins
120
°C
t
INT
Detection Interval
2.1
s
t
32S
32-Second Timer
(8)
Charger Enabled
20.5
25.2
28.0
s
Charger Disabled
18.0
25.2
34.0
t
15MIN
15-Minute Timer
15-Minute Mode (FAN5400,
FAN5402, FAN5404, FAN5405)
12.0
13.5
15.0
min
∆t
LF
Low-Frequency Timer Accuracy
Charger Inactive
–25
25
%
Notes:
5. Negative current is current flowing from the battery to V
BUS
(discharging the battery).
6. Q2 always turns on for 60 ns, then turns off if current is below I
SYNC
.
7. Guaranteed by design; not tested in production.
8. This tolerance (%) applies to all timers on the IC, including soft-start and deglitching timers.