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Manufacturer Part #


MIC2042 Series 1 Channel 5.5 V 3 A High Side Power Distribution Switch - SOIC-8

ECAD Model:
Mfr. Name: Microchip
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Product Specification Section
Technical Attributes
Attributes Table
Configuration: High Side
Input Voltage: 1.6V to 5.5V
No of Elements: Single
On-state Resistance-Max: 60mΩ
Rated Current-Max: 3A
Type: Power Distribution Switch
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The MIC2042-1YM is a high-side MOSFET switch optimized for general purpose power distribution applications which require circuit protection.

The devices switch up to 5.5 V and as low as 0.8 V while offering both programmable current limiting and thermal shutdown to protect the device and the load. A fault status output is provided in order to detect overcurrent and thermal shutdown fault conditions. Both devices employ soft-start circuitry to minimize the inrush current in applications that employ highly capacitive loads. Additionally, for tighter control over inrush current during start-up, the output slew-rate may be adjusted by an external capacitor. The MIC2042-1YM features a auto-reset circuit breaker mode that latches the output off upon detecting an overcurrent condition lasting more than 28 ms. The output is reset by removing or reducing the load.

Key Features:

  • 60 mOhm max. on-resistance
  • 0.8 V to 5.5 V operating range
  • Adjustable current limit
  • Power-Good detection
  • Up to 3 A continuous output current
  • Short-circuit protection with thermal shutdown
  • Adjustable slew-rate control
  • Circuit breaker mode (MIC2043)
  • Fault status flag
  • Undervoltage lockout
  • Output MOSFET reverse current flow block when disabled
  • Very fast reaction to short-circuits
  • Low quiescent current


  • Docking stations
  • Notebook PCs
  • PDAs
  • Hot swap board insertions
  • RAID controllers
  • USB hosts
  • ACPI power distribution  

To learn more about the MIC2042 product family, Click Here.

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Factory Stock:Factory Stock:
Factory Lead Time:
12 Weeks
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