MAX11068GUU+

Introduction

The MAX11068GUU+ is a high-performance, exceedingly accurate, low-power analog-to-digital converter (ADC) that is used for battery management in a variety of portable and system applications. It features a 16-bit, unipolar, single-ended input, as well as an integrated flash memory to store 8-bit factory calibration coefficients. It is designed to guarantee high performance and reliable long-term stability even in harsh operating environments. It also carries a wide set of protection features, such as open/short circuit detection, overvoltage monitoring, and watchdog functionality. Furthermore, it meets SC17 compliance to ensure safe operation.

Application Field and Working Principle

The MAX11068GUU+ is an ideal choice for battery management in systems that require precision measurement and monitoring of charging status, such as activity trackers, smartwatches, and other wearable devices. It is also suitable for use in battery-powered products, including power tools, e-bikes, and electric vehicles. The device can monitor the voltage of a single cell or two-series battery stack without incurring the cost of an external multiplexer. It can also be used to monitor voltage, current, and temperature measurements in renewable energy applications to enable safer and more efficient operation and maintenance.

The MAX11068GUU+ uses a patented sigma-delta architecture to provide a single-ended 16-bit resolution measurement that is accurate to within 0.5%. It is capable of measuring voltages up to 36V, and is capable of monitoring a battery stack up to +70V. The built-in flash memory stores 8-bit factory calibration coefficients stored at the factory, which are applied to the current measurement. The device is powered by a 5V supply and consumes only 150µA at a sampling rate of 100Hz, making it one of the most power-efficient battery management solutions on the market.

The device features a user-configurable alarm output alarm to alert of an overvoltage or overcurrent fault, as well as an open/short-circuit indication. It also provides an interrupt output that can be used to inform the system that a new measurement is ready. Furthermore, the device comes with a watchdog timer to prevent accidental system hangs and has the ability to control an external MOSFET or N-channel MOSFET.

Conclusion

The MAX11068GUU+ is an ideal solution for battery management applications in systems that require high accuracy, low power, and reliable long-term stability. It is well-suited for monitoring the voltage of a single cell or two-series battery stack, and can be readily used for voltage, current, and temperature measurements in renewable energy applications. The device features open/short circuit detection, overvoltage monitoring, and watchdog functionality, making it a secure and reliable solution for battery management needs.