MAX17851AUP/V+

MAX17851AUP/V+ is a SPI to UART safety monitoring bridge that translates communication from SPI format to universal asynchronous receiver transmitter (UART) format specially designed to interface with Analog Device's battery management data acquisition system. The safety monitoring bridge enables robust communication with baud rates extending up to 4Mbps in both single and dual daisy-chain system architectures. High throughput, dual UART systems can read 96 cells of battery voltages within 1173us. The UART is ISO26262 compliant for automotive safety integrity level (ASIL) D systems providing detection of message corruption, delay, loss, and insertion through the embedded UART communication lock step safety measure state machine (LSSM). It is used in applications such as battery management systems (BMS), electric and hybrid electric vehicles (EV/HEV), and energy storage systems (ESS).

• Automated on-chip communication verification with simplified host reporting
• Always-on daisy-chain fault polling with fault type and fault location
• Integrated system watchdog with redundant daisy chain controller
• Programmable system recovery, programmable contactor control
• Integrated cell balancing while microcontroller is in sleep mode
• Safe long term balancing monitoring with programmable interrupts
• SPI interface up to 10MHz, 1.71V to 5.5V operation, AEC-Q100 qualified
• DCIN1 static supply current is 920uA typical at (fSCLK = 0, SDO not loaded)
• Input capacitance is 2pF typical at (VDCIN1 <gt/> = VDDL1, VDCIN1 <lt/> 5.5V, TA = +25°C)
• Operating temperature range from -40°C to +125°C, TSSOP (U20+7C) package

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