ATA2069-TAQY

ATA2069-TAQY Datasheet


The bipolar integrated circuit ATA2069 is designed for the use in relay-operated automotive flasher modules and makes it possible to detect the outage of flasher bulbs on the vehicle itself and also on a trailer.

Part Datasheet
ATA2069-TAQY ATA2069-TAQY ATA2069-TAQY (pdf)
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• Lamp Outage Indication for Car and Trailer
• Temperature and Supply Voltage Compensated Flashing Frequency
• Relay Driver Output with High Current Carrying Capacity and Low Saturation Voltage
• Minimum Lamp Load for Flasher Operation > 10W

The bipolar integrated circuit ATA2069 is designed for the use in relay-operated automotive flasher modules and makes it possible to detect the outage of flasher bulbs on the vehicle itself and also on a trailer.

Vehicles with a trailer hook are equipped with additional pilot lamps in the dashboard.

Atmel ATA2069 is off i.e., the relay is deactivated as long as the flasher switch at contact +49a is open. As soon as this switch is closed, the IC starts reliably with the bright phase.

There are two thresholds integrated one threshold is defined to be 21 + 10W and is designed for the lamp outage detection of 1 of 2 lamps. If the current is below this threshold, the IC switches to frequency doubling, just like the standard flashers e.g. Atmel U2043B .

The other threshold is defined to be 42 + 10W and is designed for the outage detection of 1 of 3 lamps if this happens, the additional trailer pilot lamp is switched off, but there is no frequency doubling. 50 ms after the start of the bright phase, the comparator measures the voltage drop at the shunt and latches this value for the rest of the bright phase. The output of this pilot lamp pin 8 is short-circuit protected against GND. In case of a short circuit the external transistor is switched off after 52ms for the rest of the current flasher cycle, but it is enabled again for the next cycle.

Flasher with Trailer Control

Atmel ATA2069

Figure Block Diagram
2 VS - 57mV K1

VS +49

Timing Unit
3 Relay
3kΩ K2

VS - 11mV VS/2
7 R3 1.5kΩ 49a

VS - 111mV
10Ω
1 40% of VS

Shunt
20mΩ +49

R5 150Ω

R2 100Ω
21W 5W 21W trailer
21W 5W 21W trailer

Pilot lamp trailer
2 Atmel ATA2069

Pin Configuration

Figure Pinning

GND 1 VS 2 REL 3 LD 4
8 OPL 7 SI 6 OSCR 5 OSCC

Table Pin 1 2 3 4 5 6 7 8

Pin Description Symbol GND VS REL LD OSCC OSCR SI OPL

Function IC ground Supply Voltage Relay driver Lamp failure detection Cap. oscillator Res. oscillator Start input 49a Output pilot lamp

Atmel ATA2069

Absolute Maximum Ratings

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Parameters

Value

Unit

Supply voltage
Ordering Information

Extended Type Number ATA2069-TAQY

Package SO8

Package Information

Package SO 8 Dimensions in mm

Drawing-No. Issue 1;

Atmel ATA2069

Remarks Taped and reeled, Pb-free
technical drawings according to DIN specifications

History
4917D-AUTO-03/11
• Section 3 “Absolute Maximum Ratings” on page 4 changed
• Section 5 “Ordering Information” on page 5 changed
• Section 6 “Package Information” on page 5 changed
4917C-AUTO-10/07
• Section 5 “Ordering Information” on page 5 changed
4917B-AUTO-03/06
• Section 5 “Ordering Information” on page 5 changed
6 Atmel ATA2069

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Datasheet ID: ATA2069-TAQY 519157