CA3228 Ver la hoja de datos (PDF) - Harris Semiconductor
Número de pieza
componentes Descripción
Fabricante
CA3228 Datasheet PDF : 9 Pages
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CA3228
V3ON
ON
RESUME
SET/ACCEL
COAST
R3, 2.2K
R4,680
R5, 120
OFF
MOMENTARY
VCC
CONTACT
T.P.A.
1
24
DRIVER
COMMAND
SWITCHES
RI
0.1µF 2
23
560 10K
3
22
S1
0.68µF
R2
4
21
S2
10K
5
20
0.001µF 6
19
S3
7
18
S4
S5
8.2K
0.05µF
43K
0.047µF 8
17
9
16
N
S
T.P.B.
150K
2.2µF
10K
10
15
11
14
12
13
51K
SPEED INPUT
FREQUENCY, fS
2.22 Hz/MPH
BRAKE LIGHT
BRAKE SWITCH
S6
GATE
VAC
VENT
1M
SEE FIGURE 3
VCC
10K
10K
CEXT
2.2µF
2.4M
+
REXT
VCC
SWITCH
FUNCTION
S1 - ON
10K
VOLTAGE AT TERM. 3
RATIO TO VCC
MIN
MAX
1.12
-
ALL RESISTANCE VALUES ARE IN OHMS
VBRAKE
S2 - RESUME
S3 - ACCEL
0.725
0.482
0.8
0.599
S4 - COAST
0.148
0.272
S5 - OFF
0
0.094
IDLE (Note 1)
0.93
0.96
NOTE: 1. All Switches Open
FIGURE 2. TYPICAL AUTOMOTIVE SPEED CONTROL APPLICATION
0.22µF
+8.2V
1.2K 1.2K
VCC VAC
VOLT.
REG
+14.4V
VENT
SOLENOID
VENT
CA3228E
(SEE FIGURE 2)
GATE
4.7K
VACUUM
SOLENOID
620
0.5W
TO
AIR
N.O.
VENT
VALVE
TO VACUUM
SOURCE
N.C.
VAC
VALVE DIAPHRAGM
POSITON
FEED BACK
(OPTIONAL
TO PIN 20)
TO THROTTLE
SYSTEM MODE
VALVE
ACCEL
CRUISE
COAST
VAC
Open
NC (Note 1)
NC
VENT
Close
Close (Note 1)
NC
NOTE:
1. Open or Closed as Required to Maintain Set Speed Error
VAC (Pin 22)
VENT (Pin 21)
GATE (pin 23)
ACCEL
H
H
L
CRUISE
L
H
L
COAST
L
L
L
BRAKE
L
L
H
REDUNDANT BRAKE
L
L
H
HI-SPEED DROPOUT
L
L
H
LO-SPEED DROPOUT
L
L
H
FIGURE 3. SOLENOID DRIVERS AND SERVO VACUUM CONTROL MECHANISM TYPICAL APPLICATION
10-35
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