2. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved Seatbelt/ISOFix Sensor IC MLX16305

3. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved MLX16305 - Block Diagram Package : SO16n Direct supplied from the 12V battery -40ºC to 85ºC operating temp. range Number of Channels : 6 6 Fully protected sense outputs ( Schaffner Pulses, short to GND/Battery, LoadDump pulses ) Externally adjustable over-current protection Overtemperature protection Features diagnostics of failure modes loads compatible : resistive, current source, etc … 1mA to 40mA current measurement range with +/- 5% accuracy 3V.. 7V output voltage measurement range

4. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved MLX16305 - Application example 1 Click ! 2 / Select channel 1 / Fasten seatbelt3 / Read Current (or Voltage) value I=30mA Seatbelt fastened !!!

5. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved MLX16305 - Application example 2 Click ! 1 / Select channel 3 / Fasten seatbelt4 / Read Current value I=30mA Seatbelt fastened !!! 2 / Read Current value I=0mA Seatbelt Not fastened !!!

6. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved Known load for calibration issues MLX16305 - Application example 3 Good matching between channels : One channel can be used as reference (e.g. : calibration issues)

7. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved MLX16305 - Application example 4 Vref Digital Control µC Vref Digital Control Digital Control Vref Digital Control Cascading possible Measurement output buffer can be set in High-impedance.

8. CONFIDENTIAL AND PROPRIETARY © Copyright 2004 Melexis Microelectronic Integrated Systems. All Rights Reserved The choice is clear End