
Device
Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
HIGH ENERGY
IGNITION CIRCUIT
ORDERING INFORMATION
MC3334P
MC3334D
TA = – 40
°
to +125
°
C
Plastic DIP
SO–8
Order this document by MC3334/D
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MCC3334
Chip
MCCF3334
Flip–Chip
1
MOTOROLA ANALOG IC DEVICE DATA
This device is designed to use the signal from a reluctor type ignition
pickup to produce a well controlled output from a power Darlington output
transistor.
Very Low Peripheral Component Count
No Critical System Resistors
Wide Supply Voltage Operating Range (4.0 V to 24 V)
Overvoltage Shutdown (30 V)
Dwell Automatically Adjusts to Produce Optimum Stored Energy
without Waste
Externally Adjustable Peak Current
Available in Chip and Flip–Chip Form
Transient Protected Inputs and Outputs
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage–Steady State
Transient 300 ms or less
Vbat
24
90
V
Output Sink Current–Steady State
Transient 300 ms or less
IO(Sink)
300
1.0
mA
A
Junction Temperature
TJ(max)
TA
Tstg
150
°
C
Operating Temperature Range
–40 to +125
°
C
Storage Temperature Range
–65 to +150
°
C
Power Dissipation, Plastic Package, Case 626
Derate above 25
°
C
PD
1.25
10
W
mW/
°
C
Figure 1. Block Diagram and Typical Application
**A 350 V zener clamp is required when using the standard MJ10012.
**
This clamp is not required if a selected version with VCEO(sus)
550 V is used.
*Optional parts for extended transient protection
+
+
–
–
Reluctor
Pickup
1.35H
V
ts
t
C1*
470
C2*
0.01
RA
RL
RB
5
S1
4
S2
C
3
C0.1
CFilter
0.1
Rbat
300
4.0 Vbat–24 Vdc
Ignition
Coil
Primary
8.0mH
**MJ10012
RGain
100
RS
0.075
3RD1
1
Power Ground
Sense
Ground
MC3334
VCC
6
7
IO
8
IL
RD2
100
Power
Output
& OVP
Current
Limit
Sense
Dwell
Reference
Buffer
Input
Comparator
with
Hysteresis
+
2
Motorola, Inc. 1996
Rev 0