FUJITSU MB3878 - Manual (Page 16)

MB3878
16
■ ■ ■ ■ PROCESSING WITHOUT USE OF THE CS PIN
If the soft-start function is not used, the CS terminal (pin 22) should be left open.
When no soft-start time is specified.
■ ■ ■ ■ NOTE ON AN EXTERNAL REVERSE-CURRENT PREVENTIVE DIODE
• Insert a reverse-current preventive diode at one of the three locations marked * to prevent reverse current from
the battery.
• When selecting the reverse current prevention diode, be sure to consider the reverse voltage (V
R
) and reverse
current (I
R
) of the diode.
22
CS
Open
VCC(O)
OUT
VIN
VH
I1
R S
BATT
Battery
A B
∗
∗
∗
21
20
19