Microchip MIC2091-2YM5-TR: A Dual Channel Power Distribution Switch for Modern Electronics

The Microchip MIC2091-2YMS-TR is a highly integrated, dual-channel power distribution switch designed to provide robust and intelligent power management for a wide range of electronic systems. This compact device is engineered to control and protect two independent power rails, making it an ideal solution for applications such as USB power hubs, set-top boxes, portable devices, and embedded systems where reliable power distribution is paramount.

Each of the two channels features a low-on-resistance (R_DS(ON)) P-channel MOSFET switch capable of handling continuous load currents. The low R_DS(ON)

A key strength of the MIC2091-2YM5-TR lies in its comprehensive suite of integrated protection features. Each channel is equipped with accurate, programmable current limiting to protect the host power supply and the switch itself from damage caused by short circuits or excessive load conditions. Furthermore, the device incorporates thermal shutdown protection that automatically disables the switch if the junction temperature exceeds a safe threshold, safeguarding the IC from overheating. The fault recovery is automatic once the fault condition is removed and the device cools down, enhancing system reliability.

The switch is controlled via two independent enable pins (EN1 and EN2), allowing for simple logic-level control from a microcontroller or system processor. The device also provides two open-drain fault flag outputs (FLG1 and FLG2), which actively signal to the host system when a channel is in a current-limit or thermal shutdown condition. This facilitates sophisticated system-level power management and diagnostics, enabling proactive responses to fault events.

Housed in a space-saving 5-pin SOT-23 package, the MIC2091-2YM5-TR offers a high level of functionality in a minimal board footprint. This makes it exceptionally suitable for space-constrained designs. Its ability to manage two channels independently within a single package simplifies board layout and reduces the total component count compared to using two single-channel switches.

ICGOOODFIND: The Microchip MIC2091-2YM5-TR stands out as a robust and efficient solution for dual-channel power switching. Its combination of low on-resistance, comprehensive protection circuitry, and compact packaging makes it an excellent choice for designers seeking to enhance system reliability, efficiency, and power management intelligence.

Keywords:

1. Dual-Channel

2. Power Distribution Switch

3. Current Limiting

4. Thermal Shutdown

5. SOT-23 Package