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.
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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 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel +1 408 441-0311 Fax +1 408 487-2600 Atmel Asia Limited Unit 01-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon HONG KONG Tel +852 2245-6100 Fax +852 2722-1369 Atmel Munich GmbH Business Campus Parkring 4 D-85748 Garching b. Munich GERMANY Tel +49 89-31970-0 Fax +49 89-3194621 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 JAPAN Tel +81 3 3523-3551 Fax +81 3 3523-7581 Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. |
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