MAX8900C(2011) 查看數據表（PDF） - Maxim Integrated
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MAX8900C
(Rev.:2011)
(Rev.:2011)
Maxim Integrated
MAX8900C Datasheet PDF : 35 Pages
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1.2A Switch-Mode Li+ Chargers with ±22V Input
Rating and JEITA Battery Temperature Monitoring
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 6V, VBAT = 4V, RSETI = 2.87kI, RDNI = 3.57kI, VTHM = VAVL/2, circuit of Figure 1, TA = -40NC to +85NC, unless otherwise
noted. Typical values are at TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Minimum On-Time
Maximum On-Time
Minimum Off-Time
tON-MIN
tON-MAX
tOFF
90
ns
9
Fs
75
ns
TA = +25NC, VTHM between
T1 and T3
4.179
4.200
4.221
IBAT = 0mA,
MAX8900A/
TA = -40NC to +85NC, VTHM
between T1 and T3
4.158
4.200
4.242
BAT Regulation Voltage (Note 3) VBATREG MAX8900B/
V
MAX8900C TA = +25NC, VTHM between 4.055 4.075 4.095
(Figure 10) T3 and T4 (Note 5)
TA = -40NC to +85NC, VTHM
between T3 and T4 (Note 5)
4.034
4.075
4.100
Charger Restart Threshold
(Note 6)
VRSTRT
VTHM between T1 and T3
VTHM between T3 and T4
-70 -100 -125
mV
-75
BAT Prequalification Lower
Threshold (Figure 6)
VPQLTH VBAT rising,180mV hysteresis
2.1
V
BAT Prequalification Upper
Threshold (Figure 6) (Note 3)
VPQUTH
VBAT rising, 180mV MAX8900A/MAX8900B
typical hysteresis MAX8900C
2.7
2.9
2.8
3.0
2.9
3.1
V
Fast-Charge Current
Fast-Charge Current Set Range
RSETI = 2.87kI
1166 1190 1214
VTHM between T2
and T4 (Figure 10)
RSETI = 6.81kI
490 500 510
mA
IFC
RSETI = 34.0kI
99
101 103
VTHM between T1 and T2 (Figure 10); the
fast-charge current is reduced to 50% the
50
%
value programmed by RSETI
(Figure 5)
Minimum
Maximum
50
mA
1200
Fast-Charge Setting Resistor
Range
RSETI (Figure 5)
Minimum
Maximum
2.87
kI
68.1
Done Current
Prequalification Current
RDNI = 3.83kI (Note 5) 93
99
105
VTHM between T2
and T4 (Figure 10)
RDNI = 7.68kI
(Note 5)
47
50
53
mA
IDN
RDNI = 38.3kI
9.5 10.5 11.5
VTHM between T1 and T2 (Figure 10); the
done current threshold is reduced to 50%
50
%
the value programmed by RDNI
VTHM between T2 RDNI = 3.83kI (Note 5) 95
105 115
and T4 (Figure 10), RDNI = 7.68kI (Note 5) 49
54
59
mA
VBAT = 2.6V
IPQ
RDNI = 38.3kI (Note 5) 10
11.5
13
VTHM between T1 and T2 (Figure 10); the
prequalification current is reduced to 50%
50
%
the value programmed by RDNI
5
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