ca3272aq Intersil Corporation, ca3272aq Datasheet - Page 2

• Manufacturer Part Number: ca3272aq
• Description: Quad-gated Inverting Power Drivers With Fault Mode Diagnostic Flag Output
• Manufacturer: Intersil Corporation

Block Diagram of the CA3272A
Block Diagram of the CA3292A
(1 of 4 Outputs Shown with Expanded Fault Logic)
NOTE: The CA3292A is identical to the CA3272A except for the
collector-to-base Zener diode on each low side power output driver
(shown here as Z
voltage clamp to protect the output when switching inductive loads.
When the output voltage exceeds the Zener threshold, Q
to suppress further increase in output voltage. The fault sense and
fault flag logic circuits are the same in the CA3272A and CA3292A.
ENABLE
FAULT
IN A
IN B
IN D
IN C
A
). The Zener diode clamp is used as an over-
F
F
F
F
CA3272A, CA3292A
A
I
I
I
I
LIM
LIM
LIM
LIM
T
T
T
T
conducts
LIM
LIM
LIM
LIM
Q
Q
Q
Q
0.02
0.02
0.02
0.02
2
D
C
B
A
ENABLE LINE
TO B, C AND D
INPUTS AND
FAULT OUTPUT
ENABLE
IN A
OUT D
OUT C
OUT B
OUT A
V
CC
H = High, L = Low, X = Don’t Care
FROM B, C, D
FAULT INPUT
CHANNELS
ENABLE
H
H
CHANNEL A
L
OUTPUTS
1 OF 4
FAULT SENSE
CHANNEL A
TRUTH TABLE
FLAG LOGIC
T
LIM
FAULT
IN
H
X
L
I
LIM
Z
A
4V
Q
0.02
A
OUT
H
H
L
Q
F
FAULT
OUT A