Zentrum Mikroelektronik Dresden has launched the ZSSC1856, an AEC-Q100 qualified low-power intelligent battery sensor IC for fuel saving start and stop systems and for measuring state-of-health, state-of-charge or state-of-function of a vehicle's battery. The IC is based on a robust power-on-reset concept. It features built-in self-test and diagnostic functions, and a calibrated on-chip temperature sensor. It operates at a voltage range of 4.2 to 18V between -40 and +125°C. The IC is available in a 5x5x0.85mm QFN32 package. During sleep-mode, the IC periodically monitors the discharge of the battery, claims the company. The internal 18bit sigma and delta-ADC with on-chip voltage reference features two input channels. One channel is for measuring the battery current, IBAT via the voltage drop at the external shunt resistor. The second channel is for measuring the battery voltage, VBAT and the temperature. An ARM core, a 96kbyte flash and EEPROM memory with error correcting code and 8kbyte static RAM is available to execute specific software for calculating the battery states. The IC supports local interconnect network 1.3, 2.0 and 2.1 specifications. The IC uses less than 100μA and 10 to 20mA in sleep and normal modes, respectively.
