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BA6222 Datasheet(PDF) 9 Page - Rohm

Part No. BA6222
Description  Reversible motor drivers (up to 2A series)
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Maker  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo ROHM - Rohm

BA6222 Datasheet(HTML) 9 Page - Rohm

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Technical Note
9/10
BA6219BFP-Y, BA6222
www.rohm.com
2009.04 - Rev.A
c
2009 ROHM Co., Ltd. All rights reserved.
12) Regarding the input pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements, in order to keep them
isolated. P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a
parasitic diode or transistor. For example, the relation between each potential is as follows:
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, as well as operating malfunctions and physical damage. Therefore, do not use methods by
which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin.
Ordering part number
B
A
6
2
1
9
B
F
P
-
Y
-
E
2
ROHM part
number
Type
6219B
6222
Package
FP-Y: HSOP25
None: HSIP10
Packaging spec.
E2: Embossed taping
None: Container tube
Resistor
Transistor (NPN)
N
N
N
P
+
P
+
P
P substrate
GND
Parasitic element
Pin A
N
N
P
+
P
+
P
P substrate
GND
Parasitic element
Pin B
C
B
E
N
GND
Pin A
Pin B
Other adjacent elements
E
B
C
GND
Parasitic
element
Appendix: Example of monolithic IC structure
Parasitic
element


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