MB3790 Datasheet, PDF (10/21 Pages) Fujitsu Component Limited. – Battery Backup IC

MB3790
(Continued)
Parameter
Symbol
Conditions
Low voltage detection 1
VBATL1
VBATH1
Low voltage detection-1
hysteresis width
DVBAT1
Battery-1
Monitoring
Section
Battery-2
Monitoring
Section
Low voltage detection 2
VBATL2
VBATH2
Low voltage detection-2
hysteresis width
DVBAT2
Low voltage detection
difference
DVBAT
Battery-1 input current
IBATA
IBATB
Battery-1 output voltage
difference
DVB1
during backup, CTL = GND
Alarm output voltage
VOHA
VOLA
Alarm output rise time
trA
Alarm output fall time
tfA
Alarm output delay time
tpdA
Battery-2 recharging
voltage
VCHG
Battery-2 recharging current ICHG
Battery-2 output voltage
difference
during backup
DVB2
VBAT
Ta = – 30°C to +70°C
VBAT
Ta = – 30°C to +70°C
VBATH1 – VBATL1
VBAT
Ta = – 30°C to +70°C
VBAT
Ta = – 30°C to +70°C
VBATH2 – VBATL2
VBATL1 – VBATL2
VBAT = 3 V, VIN = 0 V
VBAT = 3 V, VIN = 5 V
IBAT1 = 100 µA
IBAT1 = 10 µA
IOHA = 4 mA
IOLA = 5 mA
CL = 100 pF
50 mV overdrive
ICHG = –10 µA
VCHG = 2.0 V
IBAT2 = 10 µA
(VIN = +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 µs
— 0.2 1.0 µs
— 2.0 10 µs
2.80 3.00 3.20 V
1.0 2.0 — mA
— 0.10 0.15 V
10