TECHNICAL DATA
Automotive Direction Indicator IL33193-03
The IL33193-03 is a new generation industry
standard UAA1041 “Flasher”. It has been developed for
enhanced EMI sensitivity, system reliability, and improved
wiring simplification. The ILC33193-03 is pin compatible Plastic DIP
with the UAA1041B..
It includes an RF filter on the fault detection pin
(Pin 7) for EMI purposes.
SOIC
FUTURES:
Pin to pin Compatible with the UAA1041B
Defective Lamp Detection Threshold
Short Circuit Detection and Relay Shutdown
Vss 1 8 Starter
RF Filter for EMI Purposes
Load Dump Protection Vсс 2 7 Fault Detector
Relay 3
FaultDetector
6 ON/OFF
Internal Free Wheeling Diode Protection
Oscillator 4 5 Oscillator
Fig.1 Pin Connections
ORDERING INFORMATION
Operating Temperature
Device Package Packing
Range
IL33193-03N TA = -45 to 125 C DIP-8 Tube
IL33193 -03D SOP-8 Tube
TA = -45 to 105 C
IL33193-03DT SOP-8 T&R
1
8
Starter
Reference RF- 7
2 24 В… 32V
voltage filter
Detector
Relay
3
Driver
Lamp Fault
Detector
4 5
Oscillator
Fig. 2 Block Diagram IL33193-03
February. 2012. rev. 01
IL33193-03
Typical Characteristics
Vcl, Clamping Voltage, (V) Vih, Overvoltage Detection Threshold , (V)
O O
Ta, ambient temperature, ( C) Ta, ambient temperature , ( C)
Fig 3. Clamping Voltage versus Temperature Fig. 4. Overvoltage Detection versus Temperature
Icc, Supply Current, (mА) Vsat, Output Voltage, (V)
Vbat = 13.5V Vbat = 13.5V
R2 = 220 I = 250 mA
Relay on
Relay off
O O
Ta, ambient temperature, ( C Ta, ambient temperature, ( C
Fig. 5. Supply Current versus Temperature Fig. 6. Output Voltage versus Temperature
February. 2012. rev. 01
IL33193-03
Function Description
Vbat Vbat
Relay Relay
Relay on on off
t1 tf
tn
Fn=1/tn Ft=1/tf
Relay off
Time Time
Fig. 7. Normal Operation Oscillator Fig. 8. One Defective Lamp Oscillator
Timing Diagram Timing Diagram
Supply and Protection Systems
Pin 1 is connected to ground via resistor R2 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 VSS
voltage is greater than 32 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 7). 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 8), the flashing frequency changes to: Fn = 2.5*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 Where a 21 W lamp opens, the delay is expressed as: t2 = K2*R1*C1
Short circuit detection delay t3 = K1*R1*C1.
Starter
Pin 8 is connected through a 2.2 kresistor 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 (Figure 9).
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 R4 via the RF filter. The RS voltage drop is compared to a Vbat dependent internal reference voltage (Vref) to
validate the comparison over the full battery voltage range. A detected fault causes the oscillator to change frequency
(Figure 8).
February. 2012. rev. 01
IL33193-03
Short Circuit Detector
Detects excessive current (Ish > 25 A) flowing in the shunt resistor R4. The detection takes place after a time delay
of t3 (t3 = 55 ms). In this case, the relay will be turned off. The circuit is reset by switching S1 to the off position.
Operation with Short Circuit Detection
Pin 6 has to be left open and a capacitor C2 has to be connected between Pin 1 and Pin 2.
Operation without Short Circuit Detection
Pin 6 has to be connected to Pin 2, and the use of capacitor C2 is not necessary.
Vbat
D1
R4
R2
R2
01 08
02 07
C1
03 06
04 05
R3
R1
К1
К1.1
С1 – 5.6 F
D1 – IL33193-03
ЕL1 - Е L4 – 21 W Turn Signal
Lamps
ЕLD – Dashboard Indicator
К1 – Relay
R1 – 75 к
R2 - 220
R3 - 2.2 к
S1 R4 - 30 m
ЕLD ЕL1 ЕL2 ЕL3 ЕL4 ЕLD
Fig. 9. IL33193-03 Typical Application
February. 2012. rev. 01
IL33193-03
Table 1- Electrical Characteristics (8.0V ≤ Vcc=Vbat ≤ 18V)
Limits Temperature
Characteristic Unit Symbol o
Min Max TA, C
Battery Voltage Range (Normal Operation) V Vb 8.0 18 -45÷+125
Overvoltage Detector Threshold
V Vih 19 22 -45÷+125
(VPin2 – VPin1)
Clamping Voltage (R2 = 220 Ω) V Vcl 27 32 -45÷+125
Short Circuit Detector Threshold (Vpin2-
V Dth(sc) 0,63 0,77 25±10
Vpin7)
Output Voltage [I = –250 mA (VPin2 – VPin3)] V Vsat - 1,5 -45÷+125
1.3 1.75 25±10
Oscillator Constant (Normal Operation) Kn
1.25 1.85 -45÷+125
Duty Cycle (Normal Operation) % - 45 55 -45÷+125
0.45 0.75 25±10
Oscillator Constant (One 21 W Lamp Defect) Kf
0.41 0.85 -45÷+125
K1 0.150 0.240
Oscillator Constant K2 0.200 0.290 25±10
K3 0.126 0.14
Duty Cycle (One 21 W Lamp Defect) - 35 45 -45÷+125
Current Consumption (Relay “Off ”),
mA Icc - 5.3 -45÷+125
Vbat = 13.5 V, R2 = 220 Ω
Current Consumption (Relay “On ”),
mA Icc 7.8 -45÷+125
Vbat = 13.5 V, R2 = 220 Ω
Defect Lamp Detector Threshold [R2 = 220Ω,
mV Vs 75 95 -45÷+125
(VPin2 – VPin7] , Vbat = 13.5 V]
Table 2 - MAXIMUM RATINGS
Rating, Symbol, Min Max Unit
o
Operation Ambient Temperature Range -45 125 C
o
Storage Temperature Range -65 150 C
Pin 1 Positive Current (Continuous/Pulse), I1+ 150/500 mА
Pin 1 Negative Current (Continuous/Pulse), I1- -35/-500 mА
Pin 2 Current (Continuous/Pulse), I2 ±350/±1900 mА
Pin 3 Current (Continuous/Pulse), I3 ±300/±1400 mА
Pin 2 Current (Continuous/Pulse), I8 ±25/±50 mА
ESD (All Pins Except Pin 4 for Negative Pulse), Vesd ±2000 V
ESD (Pin 4 Negative Pulse), Vesd4- -1000 V
* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
February. 2012. rev. 01
IL33193-03
N SUFFIX PLASTIC DIP
(MS – 001BA)
8 5
Dimension, mm
B Symbol MIN MAX
1 4 A 8.51 10.16
B 6.1 7.11
C 5.33
F L
D 0.36 0.56
C F 1.14 1.78
-T- SEATING
PLANE
N
G 2.54
M J H 7.62
G K
H
D
J 0° 10°
0.25 (0.010) M T
K 2.92 3.81
L 7.62 8.26
NOTES:
M 0.2 0.36
1. Dimensions “A”, “B” do not include mold flash or protrusions.
N 0.38
Maximum mold flash or protrusions 0.25 mm (0.010) per side.
D SUFFIX SOIC
(MS - 012AA)
Dimension, mm
A
8 5 Symbol MIN MAX
A 4.8 5
H B P
B 3.8 4
C 1.35 1.75
1 G 4
D 0.33 0.51
C R x 45
F 0.4 1.27
-T-
SEATING G 1.27
PLANE
D K M
J F
H 5.72
0.25 (0.010) M T C M
J 0° 8°
K 0.1 0.25
NOTES:
M 0.19 0.25
1. Dimensions A and B do not include mold flash or protrusion.
P 5.8 6.2
2. Maximum mold flash or protrusion 0.15 mm (0.006) per side
for A; for B ‑ 0.25 mm (0.010) per side. R 0.25 0.5
February. 2012. rev. 01
