DS1834S+

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The DS1834S+ PMIC (Power Management IC) - Supervisors is an extremely reliable and robust power supervisor IC, which provides precision battery monitoring, protection, and overcharge protection in applications such as automotive, industrial, and consumer electronics.

The DS1834S+ provides two independent, high-voltage load switches that can source up to 1.5A. The load switches can be configured in a wide variety of modes to support any number of applications.

The IC also offers over-voltage and under-voltage protection for the power supply and battery, and additional features such as reverse polarity protection and overtemperature protection. Additionally, the DS1834S+ provides dual bidirectional buck-regulators that can convert a wide range of input voltages down to a regulated supply voltage.

The DS1834S+ is ideal for applications that require accurate and reliable power monitoring and protection. It is specified to operate over a wide temperature range with no additional external components required.

The DS1834S+ features an integrated 10-bit ADC for accurate battery voltage and temperature sensing. The ADC can be programmed to set a low and high threshold for the battery voltage and temperature. If the levels are exceeded, the IC will alert the system via an interrupt pin. This feature allows the system to be informed immediately if the battery voltage or temperature is outside of the programmed safe range.

The IC also offers an embedded state machine with three distinct states to manage the charging process of the battery: trickle-charge mode, pre-charge mode, and charge mode. In trickle-charge mode, the IC ensures that the battery is never over-discharged. In pre-charge mode, the IC begins delivering charge to the battery and the voltage is monitored to ensure that an unsafe voltage is not applied to the battery. In charge mode, the voltage is monitored and kept within a safe range while delivering current to the battery.

The DS1834S+ has a low-power mode that reduces power consumption when the battery is fully charged. When in this mode, the load switch is disabled and system can sleep until the battery voltage drops below a certain level. This feature helps to reduce system power consumption and prolong battery life.

Overall, the DS1834S+ is a reliable and robust power supervisor IC that provides accurate battery monitoring, protection, and overcharge protection for a variety of applications. Its flexible configuration, wide input voltage range, and ultra-low quiescent current consumption make it an ideal choice for a wide range of power management applications.

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