MB3790 Datasheet, PDF (3/21 Pages) Fujitsu Component Limited. – Battery Backup IC

MB3790
s BLOCK DIAGRAM
V IN
CONTROL
V SENSE
GND
R ON =0.5Ω
590KΩ
Reference
voltage power
1.24V _{supply circuit}
+
SQ
-
R
240KΩ
Vth:1.5V
100Ω
500Ω
3 µA
SBD
2.65V
V IN
+
-
2.37V
V IN
+
-
V OUT
Vth:3V
V OUT
V OUT
ALARM1
ALARM2
RESET
RESET
CT
V BAT2 V BAT1
3