DS2438AZ/T&R

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Today’s electronics are becoming increasingly complex, with multiple control and power systems in a single device. To provide proper control and power supply, systems rely on advanced digital power management devices, such as the DS2438AZ/T&R, a battery-management device that combines temperature and voltage measurement with digital power and digital logic control. In this article, we will review the application fields and working principles of the DS2438AZ/T&R.

The DS2438AZ/T&R is an advanced battery management integrated circuit (IC) that provides power control and monitoring functions in battery-powered systems. Using an on-chip, 12-bit high-resolution analog-to-digital converter, the DS2438AZ/T&R measures battery temperature and voltage in real time, providing high-accuracy data for power and control efficiency. The device includes a power multiplexor that can automatically turn on and off power to different system peripherals. It also offers logic and power control, open-drain logic output, serial communications, and programmable voltage thresholds.

The DS2438AZ/T&R can be used in a variety of battery-based applications, such as portable medical devices, tablet and laptop computers, and other rechargeable devices. Its wide operating range of -40°C to +125°C allows for use in high-temperature environments, making it an ideal solution for medical and industrial applications. It is also suitable for use in automotive, automotive aftermarket, renewable energy, and military applications. The device offers advanced battery-management features, including accurate voltage and temperature measurement, as well as a battery-backup cell control and backup recharge enable, making it an ideal solution for battery-powered applications.

The DS2438AZ/T&R has several unique features, including an integrated battery selector switch that controls power to different peripherals. The device includes a temperature sensor, an on-chip temperature compensation circuit, and a 12-bit high-resolution A/D converter that samples battery voltage and temperature. The integrated power multiplexor enables simultaneous enabling and disabling of six different power supplies, ensuring power supply stability. It also features a serial communications interface (I2C/SPI) that allows for remote monitoring and control of the device. Finally, the DS2438AZ/T&R implements programmable high and low-voltage thresholds to lock out operation at predetermined levels for safe operation.

The DS2438AZ/T&R operates from a single 5.5V supply, consuming as low as 2mA in active mode. The device also features enhanced sleep mode operation, which reduces power consumption to effectively 0mA. The integrated voltage comparator detects over-voltage and under-voltage conditions, further enhancing the safety of the device by providing safe operation in the event of an external voltage source failure or over-voltage condition. Finally, the DS2438AZ/T&R implements programmable over-temperature, over-voltage, and under-voltage thresholds to ensure safe operation in extreme environments.

The DS2438AZ/T&R is a versatile and advanced integrated circuit that is ideal for battery-powered applications, offering reliable power control and monitoring in an ultra-compact package. It integrates a 12-bit high-resolution analog-to-digital converter, power multiplexor, temperature sensor, over-voltage detection and protection, over-temperature protection, and digital logic control, making it an ideal solution for a variety of battery-based applications.

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