MAX17853ACB/V+

MAX17853ACB/V+ is a 14-channel high-voltage data-acquisition system. It is a flexible data-acquisition system for management of high-voltage and low-voltage battery modules. The system can measure 14 cell voltages and a combination of six temperatures or system voltage measurements with fully redundant measurement engines in 263µs or perform all inputs solely with the ADC measurement engine in 156µs. There are 14 internal balancing switches rated for <gt/> 300mA for cell-balancing current, each supporting extensive built-in diagnostics. Up to 32 devices can be daisy-chained to manage 448 cells and monitor 192 temperatures. Cell and bus-bar voltages ranging from -2.5V to +5V are measured differentially over a 65V common-mode range, with a typical accuracy of 1mV (3.6V cell, 25°C). Applications include high-voltage battery stacks, electric vehicles (EVs), hybrid electric vehicles (HEVs), electric bikes, battery-backup systems (UPS), super-cap systems and battery-powered tools.

• AECQ-100 grade 1 temperature range from -40°C to 125°C
• 65V operating voltage, ultra-low-power operation (standby mode: 2mA, shutdown mode: 2µA)
• Redundant ADC and comparator (COMP) acquisitions
• Simultaneous cell and bus-bar voltage acquisitions, 14 cell-voltage measurement channels
• 14 cell-balancing switches, <gt/> 300mA software-programmable balancing Current
• Six configurable auxiliary inputs for temperature, voltage or GPIO
• Integrated die-temperature measurement, automatic thermal protection
• Support ASIL D requirements for cell voltage, temperature, communication
• Selectable UART, dual UART or SPI interface, battery-management UART protocol 32bit unique device ID
• Individually configurable safety alert, 64 LQFP package

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