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Número de pieza
componentes Descripción
MB3790 Ver la hoja de datos (PDF) - Fujitsu
Número de pieza
componentes Descripción
Fabricante
MB3790
Battery Backup IC
Fujitsu
MB3790 Datasheet PDF : 21 Pages
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MB3790
(Continued)
Parameter
Symbol
Conditions
Low voltage detection 1
V
BATL1
V
BATH1
Low voltage detection-1
hysteresis width
DV
BAT1
Battery-1
Monitoring
Section
Battery-2
Monitoring
Section
Low voltage detection 2
V
BATL2
V
BATH2
Low voltage detection-2
hysteresis width
DV
BAT2
Low voltage detection
difference
DV
BAT
Battery-1 input current
I
BATA
I
BATB
Battery-1 output voltage
difference
DV
B1
during backup, CTL = GND
Alarm output voltage
V
OHA
V
OLA
Alarm output rise time
t
rA
Alarm output fall time
t
fA
Alarm output delay time
t
pdA
Battery-2 recharging
voltage
V
CHG
Battery-2 recharging current I
CHG
Battery-2 output voltage
difference
during backup
DV
B2
V
BAT
Ta = – 30°C to +70°C
V
BAT
Ta = – 30°C to +70°C
V
BATH1
– V
BATL1
V
BAT
Ta = – 30°C to +70°C
V
BAT
Ta = – 30°C to +70°C
V
BATH2
– V
BATL2
V
BATL1
– V
BATL2
V
BAT
= 3 V, V
IN
= 0 V
V
BAT
= 3 V, V
IN
= 5 V
I
BAT1
= 100
µ
A
I
BAT1
= 10
µ
A
I
OHA
= 4 mA
I
OLA
= 5 mA
C
L
= 100 pF
50 mV overdrive
I
CHG
= –10
µ
A
V
CHG
= 2.0 V
I
BAT2
= 10
µ
A
(V
IN
= +5 V, Ta = +25
°
C)
Value
Unit
Min. Typ. Max.
2.55 2.65 2.75 V
2.52 2.65 2.78 V
2.59 2.69 2.79 V
2.56 2.69 2.82 V
20 40 60 mV
2.27 2.37 2.47 V
2.24 2.37 2.50 V
2.31 2.41 2.51 V
2.28 2.41 2.54 V
20 40 60 mV
0.26 0.28 0.30 V
–100 — 500 nA
–100 — 500 nA
— 0.30 0.35 V
— 0.10 0.15 V
4.5 4.8 — V
— 0.2 0.4 V
— 2.0 3.0
µ
s
— 0.2 1.0
µ
s
— 2.0 10
µ
s
2.80 3.00 3.20 V
1.0 2.0 — mA
— 0.10 0.15 V
10
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