UNISONIC TECHNOLOGIES CO., LTD
93334
HIGH ENERGY IGNITION
CIRCUIT
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
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.
SOP-8
FEATURES
* Very Low Peripheral Component Count
* No Critical System Resistors
* Wide Supply Voltage Operating Range (4.0V ~ 24V)
* Overvoltage Shutdown (30V)
* Dwell Automatically Adjusts to Produce Optimum Stored Energy
without Waste
* Externally Adjustable Peak Current
* Transient Protected Inputs and Outputs
ORDERING INFORMATION
Ordering Number
93334G-S08-R
Pin Assignment: G: Gate
D: Drain
Package
SOP-8
S: Source
Packing
Tape Reel
Note:
MARKING
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QW-R121-006.D
93334
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM AND TYPICAL APPLICATION
Component Values
Pickup
Coil
R
L
R
1
, R
2
C
1
, C
2
R
BAT
CFilter
C
DWELL
R
GAIN
R
D2
R
S
R
DRIVE
R
D1
Series resistance = 800Ω±10% @ 25℃, inductance= 1.35H @ 1.0kHz @ 15Vrms
Leakage L=0.6mH, primary R=0.43Ω±5% @ 25℃, primary L=7.5mH ~ 8.5mH @ 5.0A
Load resistor for pickup=12KΩ±20%
Input buffer resistors provide additional transient protection to the already clamped
inputs=20k±20%
For reduction of high frequency noise and spark transients induced in pick-up and leads;
optional and non-critical
Provides load dump protection (but small enough to allow operation at V
BAT
=4.0V) =300Ω±20%
Transient filter on V
CC
, non-critical
Stores reference, circuit designed for 0.1μF±20%
R
GAIN
/R
D1
sets the DC gain of the current regulator =5.0k±20%
R
D2
/R
D1
set up voltage feedback from R
S
Sense resistor (P
D
A
G
in thick film techniques) =0.075Ω±30%
Low enough to supply drive to the output Darlington, high enough to keep V
CE(SAT)
of the I
C
below Darlington turn-on during load dump = 100Ω±20%, 5.0W
Starting with 35Ω assures less than 5.5A, increasing as required to set 5.5A
R
D1
=(I
O(PEAK)
R
S
– V
REF
)/((V
REF
/R
D2
)-(1.4/R
GAIN
))-(≈100Ω)
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QW-R121-006.D
UNISONIC TECHNOLOGIES CO., LTD
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93334
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
RATINGS
UNIT
24
Power Supply Voltage-Steady State Transient 300ms or less
V
CC
V
90
300
mA
Output Sink Current-Steady State Transient 300ms of less
I
OUT(SINK)
1.0
A
Power Dissipation
1.05
W
P
D
Derate above 25C
12
mW/C
Junction Temperature
T
J
+125
C
Operating Temperature
T
OPR
-40~+125
C
Storage Temperature
T
STG
-40 ~ 150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
SYMBOL
ELECTRICAL CHARACTERISTICS
(V
CC
= 13.2V
DC
, circuit of Figure 3, unless otherwise specified)
PARAMETER
SYMBOL TEST CONDITIONS
V
BAT
=4.0V
DC
V
BAT
=8.0V
DC
V
CC
V
BAT
=12.0V
DC
V
BAT
=14.0V
DC
V
BAT
=4.0V
DC
V
BAT
=6.0V
DC
I
PEAK
V
BAT
=8.0V
DC
V
BAT
=10.0V
DC
F=33Hz
F=133Hz
I
PEAK
F=200Hz
F=267Hz
F=333Hz
F=33Hz
F=133Hz
T
ON
F=200Hz
F=267Hz
F=333Hz
V
BAT
Turn-on
V
THR
Turn-off
V
HYS
Turn-on
V
THR
Turn-off
MIN
TYP
3.5
7.2
10.4
11.8
3.4
5.2
5.3
5.4
5.5
5.5
5.4
4.4
3.4
7.5
5.0
4.0
3.0
2.3
30
360
90
1.8
1.5
60
V
BAT
=10V
DC
V
BAT
=30V
DC
V
BAT
=50V
DC
120
4.0
120
280
540
160
120
MAX
UNIT
V
DC
Internal Supply Voltage, Pin 6
Ignition Coil Current Peak,
Cranking RPM 2.0Hz ~ 27Hz
Ignition Coil Current Peak, Normal RPM
3.0
4.0
4.6
5.1
5.1
5.1
4.2
3.4
2.7
A
PEAK
A
PEAK
Ignition Coil On-Time, Normal RPM Range
Shutdown Voltage
Input Threshold (Static Test)
Input Threshold Hysteresis
Input Threshold (Active Operation)
Total Circuit Lag from ts (Figure 1) until Ignition
Coil Current Falls to 10%
Ignition Coil Current Fall Time (90% ~ 10%)
Saturation Voltage IC Output (Pin 7)
(R
DRIVE
= 100Ω)
Current Limit Reference, Pin 8
25
14.0
5.9
4.6
3.6
2.8
35
ms
V
DC
mV
DC
mV
DC
V
DC
μs
μs
mV
DC
75
V
CE(SAT)
V
REF
190
mV
DC
UNISONIC TECHNOLOGIES CO., LTD
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QW-R121-006.D
93334
6.0
5.5
5.0
LINEAR INTEGRATED CIRCUIT
I
GNITION COIL CURRENT VS. FREQUENCY / PERIOD
V
BAT
=13.2V
DC
V
BAT
-1.5V
Slope=
8.0mH
I
OUT
(A)
4.0
3.0
2.0
1.0
333
200
5
133
100
10
70
15
50
20
25
33
30
ms
Frequency, f (Hz)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R121-006.D
嵌入式系统
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