MB3790 Fujitsu Media Devices, MB3790 Datasheet - Page 10

• Manufacturer Part Number: MB3790
• Description: Battery Backup IC
• Manufacturer: Fujitsu Media Devices

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DataSheet
10
4
MB3790
(Continued)
Battery-1
Monitoring
Section
Battery-2
Monitoring
Section
U
.com
Low voltage detection 1
Low voltage detection-1
hysteresis width
Low voltage detection 2
Low voltage detection-2
hysteresis width
Low voltage detection
difference
Battery-1 input current
Battery-1 output voltage
difference
during backup, CTL = GND
Alarm output voltage
Alarm output rise time
Alarm output fall time
Alarm output delay time
Battery-2 recharging
voltage
Battery-2 recharging current I
Battery-2 output voltage
difference
during backup
Parameter
V
V
DV
V
V
DV
DV
I
I
DV
V
V
t
t
t
V
DV
BATA
BATB
rA
fA
pdA
CHG
Symbol
BATL1
BATH1
BATL2
BATH2
OHA
OLA
CHG
DataSheet4U.com
BAT1
BAT2
BAT
B1
B2
V
Ta = – 30°C to +70°C
V
Ta = – 30°C to +70°C
V
V
Ta = – 30°C to +70°C
V
Ta = – 30°C to +70°C
V
V
V
V
I
I
I
I
C
50 mV overdrive
I
V
I
BAT1
BAT1
OHA
OLA
CHG
BAT2
BAT
BAT
BATH1
BAT
BAT
BATH2
BATL1
BAT
BAT
CHG
L
= 100 pF
= 5 mA
= 4 mA
= –10 A
= 100 A
= 10 A
= 10 A
= 3 V, V
= 3 V, V
= 2.0 V
– V
Conditions
– V
– V
BATL2
BATL1
BATL2
IN
IN
= 0 V
= 5 V
–100
–100
2.55
2.52
2.59
2.56
2.27
2.24
2.31
2.28
0.26
2.80
Min
4.5
1.0
20
20
—
—
—
—
—
—
—
(V
Value
IN
2.65
2.65
2.69
2.69
2.37
2.37
2.41
2.41
0.28
0.30
0.10
3.00
0.10
Typ
4.8
0.2
2.0
0.2
2.0
2.0
40
40
—
—
= +5 V, Ta = +25 C)
Max
2.75
2.78
2.79
2.82
2.47
2.50
2.51
2.54
0.30
0.35
0.15
3.20
0.15
500
500
0.4
3.0
1.0
60
60
10
—
—
Unit
mV
mV
mA
nA
nA
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
s
s
s