TECHNICAL DATA

IL33193

Automotive Direction Indicator

ORDERING INFORMATION

IL33193N

DIP

IL33193D

SOIC

The IL33193 is a new generation industry standard UAA1041 “Flasher”.

It has been developed for enhanced EMI sensitivity, system reliability, and

improved wiring simplification. The IL33193 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 m

Ω shunt

resistor. The IL33193 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 mW) 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

PIN CONNECTIONS

1

2

3

45

6

7

8

Vss

Oscillator

Oscillator

Vсс

Relay

Starter

Fault

Detector

Enable

1

2

3

4

5

6

7

8

Oscillator

Lamp Fault

Detector

RF

Filter

Reference

Voltage

Relay

Driver

Detector

24V

33V

Starter

SW1

SW2

Simplified Block Diagram

This Device contains 60 active transistors.

1