Motorola MC3334D, MC3334P, MCCF3334, MCC3334 Datasheet
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
V
bat
24
90
V
Output Sink Current–Steady State
Transient 300 ms or less
I
O(Sink)
300
1.0
mA
A
Junction Temperature T
J(max)
150 °C
Operating Temperature Range T
A
–40 to +125 °C
Storage Temperature Range Tstg –65 to +150 °C
Power Dissipation, Plastic Package, Case 626
Derate above 25°C
P
D
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 V
CEO(sus)
w 550 V is used.
*Optional parts for extended transient protection
+
+
–
–
Reluctor
Pickup
1.35H
V
t
s
t
C1*
470
C2*
0.01
R
A
20k
R
L
10k
R
B
20k
5
S1
S2
4
C
3
C
Dwell
0.1
C
Filter
0.1
Rbat
300
4.0 V
bat–
24 Vdc
Ignition
Coil
Primary
8.0mH
**MJ10012
R
Gain
5.0k
R
Drive
100
RS
0.075
R
D1
35–350
1
Power Ground
Sense
Ground
MC3334
VCC6
7
I
O
8
I
L
R
D2
100
Power
Output
& OVP
Current
Limit
Sense
Dwell
Reference
Buffer
Input
Comparator
with
Hysteresis
+
2
Motorola, Inc. 1996 Rev 0
MC3334 MCC3334 MCCF3334
2
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(TA = –40° to +125°C, V
bat
= 13.2 Vdc, circuit of Figure 1, unless otherwise noted.)
Characteristics
Symbol Min Typ Max Unit
Internal Supply Voltage, Pin 6
V
bat
= 4.0 Vdc
V
bat
= 8.0 Vdc
V
bat
= 12.0
V
bat
= 14.0
V
CC
–
–
–
–
3.5
7.2
10.4
11.8
–
–
–
–
Vdc
Ignition Coil Current Peak, Cranking RPM 2.0 Hz to 27 Hz
V
bat
= 4.0 Vdc
V
bat
= 6.0
V
bat
= 8.0
V
bat
= 10.0
I
o(pk)
3.0
4.0
4.6
5.1
3.4
5.2
5.3
5.4
–
–
–
–
A pk
Ignition Coil Current Peak, Normal RPM
Frequency = 33 Hz
Frequency = 133 Hz
Frequency = 200 Hz
Frequency = 267 Hz
Frequency = 333 Hz
I
o(pk)
5.1
5.1
4.2
3.4
2.7
5.5
5.5
5.4
4.4
3.4
–
–
–
–
A pk
Ignition Coil On–Time, Normal RPM Range
Frequency = 33 Hz
Frequency = 133 Hz
Frequency = 200 Hz
Frequency = 267 Hz
Frequency = 333 Hz
t
on
–
–
–
–
–
7.5
5.0
4.0
3.0
2.3
14.0
5.9
4.6
3.6
2.8
ms
Shutdown Voltage V
bat
25 30 35 Vdc
Input Threshold (Static Test)
Turn–on
Turn–off
VS2–V
S1
–
–
360
90
–
–
mVdc
Input Threshold Hysteresis VS2–V
S1
75 – – mVdc
Input Threshold (Active Operation)
Turn–on
Turn–off
V
S2
–
–
1.8
1.5
–
–
Vdc
Total Circuit Lag from ts (Figure 1) until Ignition Coil Current Falls to 10% – 60 120 µs
Ignition Coil Current Fall Time (90% to 10%) – 4.0 – µs
Saturation Voltage IC Output (Pin 7) (R
DRIVE
= 100 Ω)
V
bat
= 10 Vdc
V
bat
= 30 Vdc
V
bat
= 50 Vdc
V
CE(sat)
–
–
–
120
280
540
–
–
–
mVdc
Current Limit Reference, Pin 8 V
ref
120 160 190 mVdc
Figure 2. Ignition Coil Current versus Frequency/Period
333 200 133 100 70 50 33
1.0
2.0
3.0
4.0
5.0
6.0
5.5
0 5 10 15 20 25 30 ms
V
bat
= 13.2 Vdc
Slope =
V
bat
– 1.5 V
8.0 mH
I (A)
f, FREQUENCY (Hz)
O
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