Rainbow Electronics BD4201FV - Manual (Page 7)

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