MIC809SUY-TR Integrated Circuits (ICs)

The MIC809SUY-TR is a power management IC (PMIC), belonging to the Supervisors class of PMICs. Developed by Microchip Technology Inc., it is used to monitor and control power in applications such as automotive, computer and consumer electronic solutions, partnering with the company’s other power management solutions like Automatic Voltage Regulators (AVRs) and Voltage Regulator Modules (VRMs).

The MIC809SUY-TR can operate as a supervisor or reset generator. It includes an efficient voltage-detection block, with adjustable logic thresholds and a wide operating range. It also has an adjustable reset timeout and power-on-reset which helps protect mission critical and fault-tolerant systems against system glitches and brownouts. Additionally, it provides an on-chip voltage reference and the ability to monitor many different voltages.

The MIC809SUY-TR can replace traditionally used supervisor components, powered by 3.3V and 5V, to provide a cost-efficient, space-saving and time-saving design. The package size is small enough to be used in many different form factors and its low power consumption makes it an ideal choice for portable devices. The device is also RoHS and ESD compliant, making it suitable for assembly in hazardous environments.

The MIC809SUY-TR has an input voltage range of 1.9V to 5.5V and can monitor up to two external voltages. It has an adjustable reset threshold of 2.34V to 5.25V and an adjustable reset timeout of 250ms to 5s. The device has a push-pull reset output, with a pull-up current of 50µA, suited to drive microprocessor or related high-speed circuits. It also has an open-drain active-low power-on reset output.

The MIC809SUY-TR includes an internal voltage reference of 0.8V, which is stable over temperature and changes in proportion to the VDD voltage. The rail-to-rail comparator monitors the VDD rail and provides an active-low reset output when it drops below the reset threshold. The gain of the on-chip comparator is adjustable and allows the monitoring of multiple external voltages. The reset timeout includes an input that can be connected to an external capacitor or resistor to set the reset generation timeout.

The MIC809SUY-TR incorporates an internal trimming circuit, allowing the user to accurately adjust the reset threshold to the IC’s power-on reset voltage. It is power-gated to minimize current consumption when the device is in reset, further increasing the battery runtime of portable devices. The device is insensitive to capacitive loading, allowing it to be used in high-voltage, high-frequency applications.

In conclusion, the MIC809SUY-TR is an efficient power management IC, well suited for automotive, computer and consumer electronics applications. It provides flexible adjustable thresholds, reset timeouts and power-on reset features, enabling it to be used in a variety of applications. It is designed for use in 3.3V and 5V systems, and its small size is ideal for space-constrained applications. The device is RoHS and ESD compliant, and its low current consumption helps to preserve battery runtime.