Page 1
Device
Operating
Temperature Range
Package
SEMICONDUCTOR
TECHNICAL DATA
AUTOMOTIVE
DIRECTION INDICATOR
ORDERING INFORMATION
MC33193D
MC33193P
TA = –40° to +125°C
SO–8
DIP–8
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Order this document by MC33193/D
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
8
1
15
6
7
8
2
3
4
Oscillator
Relay
V
CC
V
SS
Oscillator
Enable
Fault Detector
Starter
(Top View)
1
MOTOROLA ANALOG IC DEVICE DATA
The MC33193 is a new generation industry standard UAA1041 “Flasher”.
It has been developed for enhanced EMI sensitivity, system reliability, and
improved wiring simplification. The MC33193 is pin compatible with the
UAA1041 and UAA1041B in the standard application configuration as
shown in Figure 9, without lamp short circuit detection and using a 20 mΩ
shunt resistor. The MC33193 has a standby mode of operation requiring very
low standby supply current and can be directly connected to the vehicle’s
battery. It includes an RF filter on the Fault detection pin (Pin 7) for EMI
purposes. Fault detection thresholds are reduced relative to those of the
UAA1041, allowing a lower shunt resistance value (20 mΩ) to be used.
• Pin Compatible with the UAA1041
• Defective Lamp Detection Threshold
• RF Filter for EMI Purposes
• Load Dump Protection
• Double Battery Capability for Jump Start Protection
• Internal Free Wheeling Diode Protection
• Low Standby Current Mode
Simplified Block Diagram
1
2
3
4
8
7
6
5
SW2
SW1
Starter
24 V 33 V
Detector
Relay
Driver
Lamp Fault
Detector
Oscillator
Reference
Voltage
RF
Filter
This device contains 60 active transistors.
This document contains information on a new product. Specifications and information herein
are subject to change without notice.
Motorola, Inc. 1996 Rev 0
Page 2
MC33193
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating Symbol Value Unit
Pin 1 Positive Current (Continuous/Pulse) I1+ 150 to 500 mA
Pin 1 Negative Current (Continuous/Pulse) I1– –35 to –500 mA
Pin 2 Current (Continuous/Pulse) I2 ±350 to ±1900 mA
Pin 3 Current (Continuous/Pulse) I3 ±300 to ±1400 mA
Pin 8 Current (Continuous/Pulse) I8 ±25 to ±50 mA
ESD (All Pins Except Pin 4 for Negative Pulse) V
ESD
±2000 V
ESD (Pin 4 Negative Pulse) V
ESD4–
–1000 V
Junction Temperature T
J
150 °C
Operation Ambient Temperature Range T
A
–40 to +125 °C
Storage Temperature Range T
stg
–65 to +150 °C
ELECTRICAL CHARACTERISTICS (–40°C ≤ T
A
≤ +125°C, 8.0 V ≤ VCC ≤ 18 V , unless otherwise noted. Typical values
reflect approximate mean at TA = 25°C, VCC = 14 V at the time of initial device characterization.)
Characteristic
Symbol Min Typ Max Unit
Battery Voltage Range (Normal Operation) V
b
8.0 – 18 V
Overvoltage Detector Threshold (V
Pin2
– V
Pin1
) V
ih
19 20.2 22 V
Clamping Voltage (R2 = 220 Ω) V
cl
27 29.2 34 V
Output Voltage [I = –250 mA (V
Pin2
– V
Pin3
)] V
sat
– – 1.5 V
Starter Resistance (Rst = R2 + R
Lamp
) R
st
– 3.3 3.6 kΩ
Oscillator Constant (Normal Operation, TA = 25°C) K
n
1.3 1.5 1.75 X
Temperature Coefficient of K
n
TC
Kn
– 0.001 – 1/ °C
Duty Cycle (Normal Operation) – 45 50 55 %
Oscillator Constant (One 21 W Lamp Defect, TA = 25°C) K
f
0.63 0.68 0.73 X
Duty Cycle (One 21 W Lamp Defect) – 35 40 45 %
Oscillator Constant (TA = 25°C) K1
K2
0.167
0.250
0.180
0.270
0.193
0.290
–
Standby Current (Ignition “Off”) I
CC
– 2.0 100 µA
Current Consumption (Relay “Off,” Enable Pin 6 High) I
CC
mA
V
bat
= 8.0 V, R3 = 220 Ω, TA = 25°C – 1.40 –
V
bat
= 13.5 V , R3 = 220 Ω – 2.16 3.5
V
bat
= 18 V, R3 = 220 Ω, TA = 25°C – 2.64 –
Current Consumption (Relay “On”) I
CC
mA
V
bat
= 8.0 V, R3 = 220 Ω, TA = 25°C – 1.62 –
V
bat
= 13.5 V , R3 = 220 Ω – 2.06 6.0
V
bat
= 18 V, R3 = 220 Ω, TA = 25°C – 3.30 –
Defect Lamp Detector Threshold [R3 = 220 Ω, (V
Pin2
– V
Pin7
)] V
S
mV
V
bat
= 8.0 V , TA = 25°C – 43.6 –
V
bat
= 13.5 V 46.5 51.0 56
V
bat
= 18 V, TA = 25°C – 57.0 –
Temperature Coefficient of V
S
TC
Vs
– 0.3 x 10
–3
– 1/°C
Page 3
MC33193
3
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Normal Operation Oscillator
Timing Diagram
Figure 2. One Defective Lamp Oscillator
Timing Diagram
–4.0
–3.0
–2.0
–1.0
0
V
bat
“On” “Off”
“On” “Off”
–4.0
–3.0
–2.0
–1.0
0
V
bat
t1
t
n
t
f
Fn = 1/t
n
Ft = 1/t
f
TIME TIME
INTRODUCTION
The MC33193 is designed to drive the direction indicator
flasher relay. It is a new generation industry standard
UAA1041 “Flasher”. It consists of the following functions:
• Supply and Protections
• On–Chip Relay Driver
• Oscillator
• Starter Functions
• Lamp Fault Detector with Internal RF Filter
• Standby Mode
Supply and Protection Systems
Pin 1 is connected to ground via resistor R3 which limits
the current in the event of any high voltage transients. Pin 2
(VCC) is the positive supply and may be connected directly to
the vehicle’s battery voltage.
Overvoltage and Double Battery Protection:
When the
applied VCC to VSS voltage is greater than 22 V, the
overvoltage detector circuit turns the relay driver off. Both the
device and the lamps are protected if two 12 V batteries are
connected in series and used to jump start the vehicle.
Load Dump Overvoltage Protection:
A 29 V overvoltage
detector protects the circuits against high voltage transients
due to load dumps and other low energy spikes. The relay
driver is automatically turned on whenever the VCC to V
SS
voltage is greater than 34 V.
Overvoltage Protection, High Voltage Transients:
The
Enable and the Starter pins are protected against positive
and negative transients by internal on–chip diodes.
On–Chip Relay Driver
The device directly drives the flasher relay. The output
structure is an Emitter of an NPN transistor. It contains the
free wheeling diode circuitry necessary to protect the device
whenever the relay is switched off.
Oscillator
The device uses a sawtooth oscillator (Figure 1).
The frequency is determined by the external components
C1 and R1. In the normal operating mode, the flashing
frequency is: Fn = 1/R1*C1*Kn. With a defective (open) 21 W
lamp (Figure 2), the flashing frequency changes to: Fn =
2.2*Fn.
The typical first flash delay (the time between the moment
when the indicator switch is closed and the first lamp flash
occurs) is: t1 = K1*R1*C1
The fault detection delay is from the time relay R1 is on and
fault detection is enabled. Where a 21 W lamp opens, the
delay is expressed as: t2 = K2*R1*C1
Starter
Pin 8 is connected through a 3.3 kΩ resistor to the flashing
lamp. Pin 8 is the input to the Starter function and senses the
use of S1 by sensing ground through the lamp (Figures 9 and
10).
Lamp Fault Detector with Internal RF Filter
A Lamp defect is sensed by the lamp fault detector’s
monitoring of the voltage developed across the external
shunt resistor RS via the RF filter. The RS voltage drop is
compared to a V
bat
dependent internal reference voltage
(V
ref
) to validate the comparison over the full battery voltage
range. A detected fault causes the oscillator to change
frequency (Figure 2).
Standby Mode
When the ignition key and warning switches are open;
Enable is in a low state and the internal switches, SW1 and
SW2, are open and no current passes through the circuit. In
this condition, the device’s current consumption is zero
(ICC= 0). When ignition key and warning switches are
closed; Enable is in a high state with SW1 and SW2 being
closed and the circuit is powered on.
Page 4
MC33193
4
MOTOROLA ANALOG IC DEVICE DATA
MAIN DIFFERENCES BETWEEN
UAA1041B & MC33193
The MC33193 is pin compatible with the UAA1041.
Supply Current
Supply current is more stable on the MC33193 when the
device is in “on” or “off” state. In “on” state the supply current
is only 40% higher than when in the “off” state, as compared
to a ratio of 3 times for the UAA1041. This results in a lower
voltage drop across the ground resistor R3 (see On–Chip
Relay Driver).
Short Circuit Detection
The MC33193 has no short circuit detection.
Standby Mode (Pin 6)
The UAA1041 has no standby mode. Pin 6 is used as an
Enable/Disable for the short circuit detection.
The MC33193 uses Pin 6 to set the device in standby
mode. If Pin 6 is connected to ground, the MC33193 is in the
standby mode. In this mode, standby current is very low and
Pin 8’s starter resistor R2 and a 2.0 kΩ internal resistor are
switched off. As soon as Pin 6 is at a high level (typical
threshold = 2Vbe) the device becomes active. In the
application, the MC33193 can be connected directly to the
battery and awakened whenever Pin 6 is connected to the
vehicle’s battery by way of a protection resistor and the
ignition key switch.
Lamp Defect Detection (Pin 7)
The UAA1041 operates with a 30 mΩ shunt resistor to
sense the lamp current. It’s lamp defect detection threshold of
Pin 7 is typically 85 mV.
The MC33193 is designed to operate with 20 mΩ shunt
resistor and at a reduced threshold of 50 mV. This reduces
power generation in the flasher module. In addition, the
MC33193 incorporates an RF filter to enhance RFI immunity .
Load Dump and Overvoltage Behavior
The UAA1041 and MC33193 both behave the same in this
regard. Both have double battery detection and lamp turn–off
protection in the event of a jump start. During load dump, both
devices are protected by an internal 30 V zener diode with the
relay activated during a load dump.
Relay Driver
Drive capability of both devices is the same. Free wheeling
diode protection is internal to both devices. The free wheeling
voltage is 2Vbe for the UAA1041 and 3Vbe for the MC33193.
This results in a higher clamp voltage across the relay and
thus in a faster turn–off. In addition, the lower “on” state
supply current is lower on the MC33193 and thus the voltage
drop across the ground resistor R3 is reduced. This results in
an even higher clamp voltage across the relay.
Oscillator Phase
The oscillator phase is opposite on the MC33193 as
compared to the UAA1041. The Oscillator voltage is falling
during “on” state and rising during “off” state for the MC33193.
Page 5
MC33193
5
MOTOROLA ANALOG IC DEVICE DATA
V
cl
, CLAMPING VOLTAGE (V)
Figure 3. Clamping Voltage versus Temperature
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Overvoltage Detection
versus Temperature
Figure 5. Supply Current versus Temperature Figure 6. Output Voltage versus Temperature
Figure 7. Defect Lamp Detection
versus Temperature
Figure 8. Oscillator Constant
versus Temperature
–50 0 50 100 150
29.5
29.0
28.5
28.0
27.5
V
ih
, OVERVOL TAGE DETECT THRESHOLD (V)
TA, AMBIENT TEMPERATURE (°C)
–50 0 50 100 150
21.5
21.0
20.5
20.0
19.5
I
CC
, SUPPLY CURRENT (mA)
TA, AMBIENT TEMPERATURE (°C)
–50 0 50 100 150
5.0
4.0
3.0
2.0
0
1.0
V
bat
= 13.5 V
R2 = 220
Ω
Relay
Relay “Off”
V
sat
, OUTPUT VOL TAGE (V)
V
bat
= 13.5 V
I = 250 mA
TA, AMBIENT TEMPERATURE (
°
C)
–50 0 50 100 150
1.30
1.28
1.26
1.24
1.22
TA, AMBIENT TEMPERATURE (
°
C)
–50 0 50 100 150
53
52
51
50
49
LAMP DEFECT DETECTION THRESHOLD (mV)
V
bat
= 13.5 V
R2 = 220
Ω
K
f
, OSCILLATOR CONSTANT (TIMES)
TA, AMBIENT TEMPERATURE (°C)
–50 0 50 100 150
1.7
1.6
1.5
1.4
1.3
Page 6
MC33193
6
MOTOROLA ANALOG IC DEVICE DATA
NOTES: 1. In the above application, the MC33193 is compatible with the UAA1041 and UAA1041B except
for the shunt resistor value (RS = 20 mΩ).
2.The flashing cycle is started by the closing of switch S1.
3.The position of switch S1 is sensed across resistor R2 and R
Lamp
by the input, Pin 8.
18
27
36
45
R1
Relay
R3
R
S
V
bat
R2
MC33193
S1
L6
L2 L3 L4 L5
Application Information
Figure 9. MC33193 Typical Application
C1
RS = 20 m
Ω
R1 = 75 k
Ω
C1 = 5.6 µF
R2 = 3.3 k
Ω
R3 = 200
Ω
L2, L3, L4, L5 = 21 W Turn Signal Lamps
Page 7
MC33193
7
MOTOROLA ANALOG IC DEVICE DATA
NOTES: 1. The flashing cycle is started by the closing of switch S1.
2.The S1 switch position is sensed across the resistor R2 and R
Lamp
by the input (Pin 8).
3.If the logic state at Pin 6 is [0], the current through R2 is off.
Application Information
1
2
3
4
8
7
6
5
SW2
SW1
Starter
24 V 33 V
Detector
Relay
Driver
Lamp Fault
Detector
Oscillator
Reference
Voltage
RF
Filter
R3
R2
R1
R
S
R4
R5
V
bat
Ignition
Key
Warning
C1
Relay 1
Relay 2
Left Right
S1 Direction
Indicator
LD L1 L2 L3 L4 LD
Figure 10. Typical MC33193 Application
RS = 20 m
Ω
R1 = 75 k
Ω
C1 = 5.6 µF
R2 = 2.2 k
Ω
R3 = 220
Ω
10 kΩ ≤ R4 ≤ 47 k
Ω
10 kΩ ≤ R5 ≤ 47 k
Ω
Relay 1
L1, L2, L3, L4 = 21 W
LD = Dashboard Indicator
EXTERNAL COMPONENTS
Page 8
MC33193
8
MOTOROLA ANALOG IC DEVICE DATA
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
ISSUE N
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
OUTLINE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
SEATING
PLANE
14
58
C
K
4X P
A0.25 (0.010)MTB
SS
0.25 (0.010)MB
M
8X D
R
M
J
X 45
_
_
F
–A–
–B–
–T–
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 4.80 5.00 0.189 0.196
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.18 0.25 0.007 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
____
G
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
14
58
F
NOTE 2
–A–
–B–
–T–
SEATING
PLANE
H
J
G
D
K
N
C
L
M
M
A
M
0.13 (0.005) B
M
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040
__
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola
was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
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INTERNET: http://Design–NET.com 51 Ting Ko k Road, Tai Po, N.T ., Hong Kong. 852–26629298
MC33193/D
*MC33193/D*
◊
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