MIC2077-2BM

Overview

The MIC2077-2BM is a quad high-side power distribution switch IC from Microchip Technology, designed for general-purpose USB applications. It integrates four independent N-channel MOSFET switches in a 16-pin SOIC package. The device provides circuit protection through internal current limiting and thermal shutdown mechanisms. It operates within a supply voltage range of 2.7V to 5.5V and supports an output current limit of 900mA per channel. Key electrical parameters include a maximum on-resistance of 150mΩ, a maximum turn-on time of 5ms, and a maximum idle time of 100μs. The component functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates smart thermal shutdown that reduces current consumption during fault modes and latches the output off until the faulty load is removed or the enable input is toggled.
• Employs soft-start circuitry to minimize inrush current when driving highly capacitive loads, ensuring stable power-up sequences.
• Features a fault status output flag that asserts during overcurrent and thermal shutdown conditions, with internally filtered transient current limit faults.

Applications

• General-purpose power distribution requiring circuit protection
• USB port power switching and management
• High-side load driver applications

Procurement Notes

Verify the specific suffix and package variant carefully, as the MIC2077-2BM may be listed as obsolete or discontinued by major distributors. Confirm availability of replacement parts such as the MIC2077-2YM series if the original part is no longer supported. Ensure the datasheet version matches the required pinout and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component for applications requiring quad-channel high-side switching with integrated protection features. Consider the 150mΩ on-resistance and 900mA current limit when designing for thermal performance. Verify compatibility with the system's logic levels and ensure the 16-pin SOIC package fits the PCB layout constraints. Evaluate the need for the smart thermal shutdown behavior versus standard thermal protection based on system recovery requirements.

Part Context

The MIC2077-2BM belongs to the MIC2027/MIC2077 family of quad USB power distribution switches. These devices are optimized for protecting power lines against short circuits and overloads. The family includes variants with different suffixes indicating package types and reel options. This specific model represents the base quad-switch configuration without additional I2C control interfaces found in other members of the broader power switch portfolio.

Replacement Considerations

Public documentation indicates the MIC2077-2BM is obsolete and should be replaced with the MIC2077-2YM (RoHS compliant). Verify pin-to-pin compatibility and electrical equivalence between the BM and YM suffixes before substitution.