ZMDI ZSSC1856 intelligent battery-sensor IC: IC features user-controlled wake-up conditions
EDN Staff - December 21, 2011
The ZSSC1856 intelligent battery-sensor IC for fuel-saving start/stop systems measures state of health, state of charge, and state of function of a vehicle’s battery. A calibrated on-chip temperature sensor eliminates the need for calibration of external components. The device also features user-controlled wake-up conditions. An ARM core, a 96-kbyte flash/electronically erasable memory with ECC, and an 8-kbyte SRAM are available to execute customer-specific software for calculating the battery states. The ZSSC1856 uses less than 100 μA in sleep mode and operates with 10 to 20 mA in normal mode. The IC can receive voltages of 4.2 to 18V and directly connects to the vehicle’s battery. The IC comes in a 5×5-mm, 0.85-mm-high QFN32 package and sells for $5.40 (low volumes).
ZMDI, www.zmdi.com
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