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FAN54041UCX Fiches technique(PDF) 8 Page - Fairchild Semiconductor

No de pièce FAN54041UCX
Description  USB-OTG, 1.55 A, Li-Ion Switching Charger with Power Path and 2.3 A Production Test Support
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN54041UCX Fiches technique(HTML) 8 Page - Fairchild Semiconductor

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© 2012 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN54040
– FAN54047 • Rev. 1.0.2
8
Electrical Specifications (Continued)
Unless otherwise specified: according to the circuit of Figure 1; recommended operating temperature range for TJ and TA;
VBUS=5.0 V; HZ_MODE; OPA_MODE=0; (Charge Mode); SCL, SDA=0 or 1.8 V; and typical values are for TJ=25°C.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Charger PWM Modulator
fSW
Oscillator Frequency
2.7
3.0
3.3
MHz
DMAX
Maximum Duty Cycle
100
%
DMIN
Minimum Duty Cycle
0
%
Boost Mode Operation (OPA_MODE=1, HZ_MODE=0)
VBOOST
Boost Output Voltage at VBUS
2.5 V < VBAT < 4.5 V, ILOAD from 0 to
200 mA
4.80
5.07
5.20
V
3.0 V < VBAT < 4.5 V, ILOAD from 0 to
500 mA
4.77
5.07
5.20
IBAT(BOOST)
Boost Mode Quiescent Current
PFM Mode, VBAT=3.6 V, ILOAD=0
250
350
A
ILIMPK(BST)
Q2 Peak Current Limit
1350
1550
1950
mA
UVLOBST
Minimum Battery Voltage for Boost
Operation
While Boost Active
2.32
V
To Start Boost Regulator
2.48
2.70
VBUS Load Resistance
RVBUS
VBUS to PGND Resistance
Normal Operation
500
k
VBUS Validation
100
Protection and Timers
VBUSOVP
VBUS Over-Voltage Shutdown
VBUS Rising
6.09
6.29
6.49
V
Hysteresis
VBUS Falling
100
mV
ILIMPK(CHG)
Q1 Cycle-by-Cycle Peak Current
Limit
Charge Mode
3
A
VSHORT
Battery Short-Circuit Threshold
VBAT Rising
1.95
2.00
2.05
V
Hysteresis
100
mV
ISHORT
Linear Charging Current
VBAT < VSHORT
Power Path
13
mA
Linear
30
TSHUTDWN
Thermal Shutdown Threshold
(7)
TJ Rising
145
°C
Hysteresis
(7)
TJ Falling
25
TCF
Thermal Regulation Threshold
(7)
Charge Current Reduction Begins
120
°C
tINT
Detection Interval
2.1
s
t32S
32-Second Timer
(8)
Charger Enabled
20.5
25.2
28.0
s
Charger Disabled
18.0
25.2
34.0
t15MIN
15-Minute Timer
15-Minute Mode (FAN54040,
FAN54042, FAN54046, FAN54047)
12.0
13.5
15.0
min
∆tLF
Low-Frequency Timer Accuracy
Charger Inactive
–25
25
%
Notes:
5.
Negative current is current flowing from the battery to VBUS (discharging the battery).
6.
Q2 always turns on for 60 ns, then turns off if current is below ISYNC.
7.
Guaranteed by design; not tested in production.
8.
This tolerance (%) applies to all timers on the IC, including soft-start and deglitching timers.


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