ISL83485IB-T

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The ISL83485IB-T is an advanced mixed signal system voltage supervisor IC, combining advanced Analog and Precision Digital components that make up a comprehensive system level IC solution. The IC provides a comprehensive solution by including features such as output over-voltage protection, user configurable low voltage and high voltage trip points or disable of each, power-on reset (POR), reset timeout, POK output and an optional manual reset. It has been designed for applications requiring precision voltage monitoring, programmable Thresholds, and the current measurement of system voltages. It is suitable for a wide range of applications such as medical equipment, home appliances, automotive systems, and power applications.

ISL83485IB-T Application Field and Working Principle

ISL83485IB-T can be used in a wide range of applications. The device was designed with system-level monitoring and protection in mind. The IC features a precise voltage monitor with a wide selection of voltage references and thresholds to ensure a precise trip or no trip result. It can also be used as a safety monitor with precise timing to ensure proper system operation at all times. In addition, the IC includes a separate power-on reset (POR) circuit, reset timeout, and an optional manual reset.

The device monitors voltage levels on its input pins by a precise voltage reference. Once the voltage level reaches a user-defined high or low threshold, an active-low reset signal is generated and the POK output is set active. The reset duration is programmable and can be adjusted between 0.1ms and 5ms. Alternatively, the reset duration can be disabled to keep the reset line asserted until the monitored voltage falls below its reference threshold. Additionally, the reset duration can be extended with an external capacitor. By integrating both a POR circuit and manual reset, the IC ensures that the system is reset properly every time it is powered up.

ISL83485IB-T also features an integrated current source for monitoring system current levels. It can therefore be used for a wide range of applications such as medical equipment, home appliances, automotive systems and power applications. To enable this function, the user must preset two registers in the IC, namely the Current Source Threshold (ITSRC) and the Maximum Current Source (ICLMAX). These parameters can be set to ensure that the system is protected from any overloads.

To enable all of the features described above, the user must configure the device by setting the Input Voltage Thresholds (VISL,VISH), the Reset Timeout Duration (RTD), the Current Source Threshold (ITSRC) and the Maximum Current Source (ICLMAX). All of these parameters can be adjusted via external I2C communication or by using a proprietary onboard programming interface. This makes the device suitable for a wide range of applications.

In conclusion, ISL83485IB-T can be used in a variety of applications that require high precision voltage monitoring, programmable Thresholds, and current measurement of system voltages. Its advanced features and on-board programming options make it an ideal choice for many applications.

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