E52240B62C

The E522.40 is a dual phantom supply with I2 C interface for antennas in automotive environments. It affords protection of the antenna lines against ESD, short to ground and battery, as well as protection against thermal over-stress of the IC.The I2C interface allows addressing of several devices with only 2 interface lines. Various antenna voltages from 3.3V to 18V can be programmed independently using external voltage dividers.A separate control line can be connected to an external bipolar NPN-transistor as a pre-regulator to reduce power dissipation in the IC. An I2C interface in conjunction with a 8bit ADC allows monitoring of antenna voltages and currents. Overcurrent and open load limits can be programmed for each antenna line separately, and will lead to automatic shutoff if tripped.An analog sense input and digital control line can be used to interface with an additional phantom supply or for other functions.

• Automotive compatible input voltage range from 3.3V to 40V including load dump transients
• Resistor programmable output voltages from 3.3V to VBAT with integrated soft start
• Up to 200mA load current with digitally programmable overcurrent- and open load levels
• Protection against supply over/under voltage, overtemperature and overcurrent with open-drain error flag
• Output for optional external bipolar NPN-transistor to reduce power dissipation
• Integrated I2C interface allows for programming of protection limits and voltage and current monitoring
• Control interface with digital comparator for additional functions
• Fast 8bit ADC samples relevant system voltages and currents