DS1833Z-5

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The DS1833Z-5 is a PMIC (Power Management Integrated Circuit) belonging to the family of Supervisors focused on providing intelligent protection and control of power supply voltages. It is available in a low-profile, space saving 5-pin SOT-23 package that provides improved flexibility and performance in various applications.

DS1833Z-5 is capable to control and protect five power supply voltages, which allows it to provide intelligent power supply design in an extensive range of applications. Its DC/DC converters, AC/DC power supplies, automotive, industrial and battery powered systems adhere to the universal power management system requirements. This device featuresultra-low quiescent current operation, 150nApeak up current. It also provides power-on reset, power supply voltage monitoring, and optional power supply sequencing.

The widespread use of the DS1833Z-5 is in HDD (Hard Disk Drive). By supplying voltage to the HDD on which the data is stored, it secures the data to guarantee its reliability and integrity.

Another possible application field is RS-485 networks. RS-485 differs from RS-232 serial link in that it is networked and allows more than one devices to share the same communication link. Therefore, it allows data to be transferred from one device to another in large quantities, which requires a well-regulated power supply system provided by DS1833Z-5.

The DS1833Z-5 voltage supervisor utilizes a bandgap voltage reference and a comparator to monitor the power supply voltage. When the monitored voltage drops below a preset threshold level, the supervisor output goes low, indicating a low-voltage condition. The low-voltage reset threshold accuracy is typically +/– 2.5%.

The device consumes minimal power while monitoring voltages, resulting in a low quiescent current of just 150nA when enabled. The device is designed to allow the user to set the trip levels of each output voltage via external voltage divider resistors for customized voltage monitoring.

The DS1833Z-5 also features an optional power supply sequencing capability. This feature allows the user to control the power-on sequencing of the output voltage levels. The device provides an adjustable delay period that allows the user to decide the sequence in which power supply voltages are powered-up, and this enables a secondary voltage to be powered up after a primary voltage has crossed the trip-point voltage level.

In conclusion, the DS1833Z-5 PMIC supervisor provides intelligent power management and control of up to five power supply voltages. Its wide range of applications include HDD, RS-485 networks, DC/DC converters, and AC/DC power supplies. Its low-voltage protection, reset, and sequencing capabilities make it a reliable and versatile power solution.

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