ATA6140_05 Datasheet, PDF (1/14 Pages) ATMEL Corporation – Two-relay Flasher

Features
• Temperature and Voltage Compensated Frequency (Fully Integrated Oscillator)
• Warning Indication of Lamp Failure by Means of Frequency Doubling
• Voltage Dependence of the Indicator Lamps also Compensated for Lamp Failure
• Relay Output with High Current Capability and Low Saturation Voltage
• Frequency Doubling only During Direction Mode
• Temperature Compensated Threshold for Lamp Failure Detection
• Overvoltage and Undervoltage Shut Down of the Relay Outputs
• Quiescent Current I ≤ 10 µA (Switches Open)
• EMI Protection According to ISO TR 7637/1, Test Level 4
(Exclusive Load Dump)
• Reversed Battery Protection by Means of a Serial Resistor and Relay Coil Connected
• Load Dump Protection 80V with External Protection Components
• 12V/24V Application
• Package: SO16
Electrostatic sensitive device.
Observe precautions for handling.
Two-relay
Flasher
ATA6140
1. Description
The integrated circuit ATA6140 is used in relay-controlled automotive flashers. With
two output stages, each side of the vehicle is controlled separately. A left and a right
direction indicator input with only a small control current makes switch contacts for
small loads possible. The separate hazard warning input simplifies the construction of
the hazard switch. Lamp outage is indicated by frequency doubling during direction
mode. Thanks to the extreme low current consumption the ATA6140 can be con-
nected to the battery directly.
Rev. 4560E–AUTO–09/05