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Microchip Technology MIC2043-2YM — Discrete Semiconductors

MIC2043-2YM High-Side Switch, 3A, 40mOhm, 8-SOIC

MPNMIC2043-2YM
End of Life

Microchip Technology MIC2043-2YM single-channel high-side power switch, 3A max output, 40 mOhm Rds(on) typical, 1.6V-5.5V supply/load, 8-SOIC surface-mount package, active production.

$2.02Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MIC2043-2YM specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load1.6V ~ 5.5V
Voltage - supply (Vcc (Vdd))1.6V ~ 5.5V
Output current3A
I/O channels1
InterfaceOn/Off
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
FeaturesSlew Rate Controlled, Status Flag
Rds on40mOhm
Case8-SOIC (0.154\", 3.90mm Width)
Fault protectionCurrent Limiting (Adjustable), Open Load Detect, Over Temperature, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

3A high-side switch with 40 mOhm Rds(on)

The MIC2043-2YM is a single-channel high-side power switch from Microchip Technology, rated for a continuous output current of 3A maximum. The input is non-inverting with an On/Off interface, and the output configuration is a single N-channel MOSFET with a 1:1 input-to-output ratio.

Fault protection set and status flag

The MIC2043-2YM integrates adjustable current limiting, open-load detection, overtemperature shutdown, and undervoltage lockout (UVLO). The status flag output signals when the switch is in fault — useful for a microcontroller to log or retry the load. The slew-rate controlled turn-on limits inrush current into capacitive loads, which prevents the upstream supply from drooping. The 8-SOIC package (0.154" width, 3.90mm body) is a standard footprint for automated assembly.

Frequently asked questions

What is the maximum output current and on-resistance of the MIC2043-2YM?

The MIC2043-2YM is rated for a continuous output current of 3A maximum, with a typical on-resistance of 40 mOhm. The 40 mOhm Rds(on) at 3A produces 0.36W of conduction loss, which the 8-SOIC package dissipates through the PCB copper.

What fault protection features does the MIC2043-2YM include?

The MIC2043-2YM integrates adjustable current limiting, open-load detection, overtemperature shutdown, and undervoltage lockout (UVLO). A status flag output signals fault conditions to the system controller.