MIC803-46D2VM3-TR Integrated Circuits (ICs)

PMIC - Supervisors

The MIC803-46D2VM3-TR is a linear voltage supervisor made by Micrel Inc, belonging to the PMIC - Supervisors\' family. It is particularly suited for use in system monitoring and controller reset generation in applications like personal computers, servers, and embedded system, such as industrial automation, game machines, and telecom.

The MIC803-46D2VM3-TR is based on the MIC80346 device, a low power reset generator with a precision voltage detector and fixed reset outputs, which supports inrush current limiting, power on reset, and push button reset. The core of MIC803-46D2VM3-TR is an innovative detection circuit combined with integrating reference buffer and comparator, which monitors the voltage levels at four rail and provides precision adjustment for reset thresholds. To facilitate various applications, the MIC803-46D2VM3-TR features a range of highly precise fixed trip threshold at 2.5/2.8/2.9/3.0/3.3/3.6/3.9/4.2/4.5 V, maximum reset output of 20 mA, adjustable minimum pulse width of 1/2/4/8 ms, and maximum reset output delay of 5/10/15/30 ms. Additionally, it provides the user with the flexibility to adjust power up/down/Push Button delays which makes it well suited for applications where a reset is critical.

Designed with a wide operating temperature range of -40°C to +85°C and low Vcc operation of 0.9V-3.6V, the MIC803-46D2VM3-TR is used to monitor power-supply 3.3V, 1.5V, 1.2V and 0.9V in order to maintain system stability. With its thermal shutdown protection and reset circuit under-voltage lockout features, this device is designed to be resilient in the event of brownout below 3V, complete shutdown or current interruptions due to mechanical contact problems.

The reset output of the MIC803-46D2VM3-TR is enabled when VCC drops below the preset voltage threshold. Furthermore, the active-high reset output is triggered when VCC rises again and reaches the preset low voltage threshold. The push button reset feature enables the user to manually input a reset request, while the preset timeout feature provides an active-low reset output at an adjustable preset timeout period. Reset output will be kept low at this timeout period even though Vcc is still above the set trip voltage.

In summary, MIC803-46D2VM3-TR offers a wide range of benefits that make it ideal for system monitoring and controller reset generation applications in a variety of embedded systems, including industrial automation, game machines, and telecom. These benefits include: precise fixed trip thresholds, active-high reset output, adjustable timeout period, low current consumption, good protection features, easy to use, and a wide operating temperature range. All the features combined make the MIC803-46D2VM3-TR an ideal solution for system monitoring and reset applications.