BD4201FV Rohm, BD4201FV Datasheet - Page 7

• Manufacturer Part Number: BD4201FV
• Description: Battery Backup IC
• Manufacturer: Rohm

Regulators
(Pin A)
Pin layout
N
P substrate
P +
(Pin A)
GND
Vbat
Vch
Vss
CS
N
Resistance
parasitic diode
P
1
2
3
4
Parasitic diode
Fig.4 Simplified structure of IC
P
N
Fig. 5
(Pin B)
(Pin B)
N
P
Parasitic diode
or transistor
C
8
7
6
5
Transistor (NPN)
B
B
P substrate
N
N
E
Vin
Vro
Vout
RESET
C
P
GND
BD4201FV
P +
Parasitic diode
or transistor
N
GND
7/8