MIC5393-SSYMT-TR

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The MIC5393-SSYMT-TR is a Tri-state Voltage Regulator, belonging to the family of Power Management Integrated Circuits (PMIC), more specifically to the category of Linear Voltage Regulators. This chip is versatile, providing both high current and low current outputs, with a wide input voltage range and a wide temperature range. The chip is fully protected and has tri-state outputs, making it the perfect choice for applications where multiple output rails with independent enable are desired.

When the die temperature is below the selected thermal shutdown threshold, two independent output rails are driven from a single input supply. The chip supports a wide input voltage range from 2.3V to 5.5V, as well as a wide temperature range from -40°C to +125°C. It provides an adjustable output voltage for the high-side output, and a fixed output voltage for the low-side output. The high and low sides can be independently enabled and the output voltage of the high side can be adjusted from 0.6V to 5V. In addition, it has current limit, thermal limit, and overvoltage protection for both the low and high side outputs, as well as a low quiescent current of 3 μA.

The MIC5393-SSYMT-TR chip is designed to provide a reliable supply of power even in extreme conditions, and is typically used in applications such as embedded systems, industrial applications, automotive systems, medical devices, and consumer products. In most applications, the lack of an external P-channel MOSFET eliminates the need for an external driver, making the MIC5393-SSYMT-TR an ideal choice for space-constrained designs.

The working principle of this chip is quite simple. When enabled, the voltage regulator charges the output capacitors to the required voltage level. Input current is then drawn from the input voltage source to maintain the output voltage, and the output current is then regulated using a current limiting circuit. This current limiting circuit is designed to ensure that the output current is never more than the current limit set by the user. The chip also features an on-chip low-side voltage clamping circuit, which builds up a forward voltage drop in case of an overload or a short in the output. This protects the internal components from damage.

Overall, the MIC5393-SSYMT-TR is a general purpose, tri-state voltage regulator with wide input and output voltage ranges. It can provide both high current and low current outputs, with robust protection and tri-state outputs. It is ideal for applications where multiple outputs with independent enable are desired and space-constrained designs.

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