NTE1478
Integrated Circuit
Solenoid Driver & Signal Sensing Circuit
Description:
The NTE1478 is an integrated circuit in a 10Lead SIP type package that detects the stopping of a
rotary signal and drives a plunger. It is designed for use in autoreverse and autoeject car stereo
applications and can be used as a solenoid driver in many other control circuits.
Features:
D
Internal Output Power Transistor: 5A Load Current Capability
D
Programmable Switch: Manual Operation Can be Obtained
D
Pause Switch: Switching Pause (Switch ON), Plunger Does Not Operate Even if the Rotary
Detective Signal Stops.
D
Internal Load Dump Protector (Excessive Supply Voltage)
D
Response Time and Driving Time are Variable with External Capacitors
D
Input Sensitivity Voltage: 2V
PP
Min
D
Operating Supply Voltage Range: V
CC
= 9V to 18V
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Supply Voltage, V
CC
18V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Current, I
OUT
5A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +25
C), P
D
12.5W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak Supply Voltage (1200 ms), V
CC
surge
40V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
30
to +75
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (V
CC
= 13.2V, R
L
= 3.3
, T
A
= +25
C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Plunger Response Time
T
rp
C
1
= 47
F, C
2
= 10
F
1.3
sec
Plunger Driving Time
T
dp
C
1
= 47
F, C
2
= 10
F
100
msec
Supply Current
I
CC(OFF)
Current at Plunger OFF
3.0
5.6
9.0
mA
I
CC(ON)
Current at Plunger ON
3.96
A
Pin2 Voltage
V
2
Pin8 = GND, Pin4 = 9V
0.6
1.0
V
Power Transistor Cutoff Current
I
CER
Pin2 = 40V, Pin10 = GND
100
A
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