MIC4123YML

Overview

The MIC4123YML is a dual low-side MOSFET driver manufactured by Micrel Inc. It features two independent channels with a peak output current of 3 A per channel. The device operates within a supply voltage range of 4.5 V to 20 V. It utilizes an 8-pin VDFN package with an exposed pad for thermal management. The logic inputs withstand swings down to -5 V, providing robust interface capabilities.

Feature Summary

• Dual independent low-side gate driver configuration
• High reliability BiCMOS/DMOS construction
• Latch-up protection against reverse currents exceeding 200 mA
• Logic input tolerance extending to negative voltages

Applications

• Low-side N-channel and P-channel MOSFET switching
• General-purpose buffer and driver applications
• Power management circuits requiring isolated drive signals

Procurement Notes

Verify the manufacturer designation as Micrel Inc., now part of Microchip Technology, when sourcing components. Confirm the specific suffix 'TR' indicates tape and reel packaging if required for automated assembly. Ensure the 8-VDFN package type matches the PCB footprint design. Cross-reference the datasheet revision to confirm electrical characteristics align with system requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring dual independent low-side driving with high peak current capability. The wide supply voltage range supports various logic levels. Consider the exposed pad thermal performance for high-duty cycle operations. Verify that the -5 V input tolerance meets the signal source specifications. This driver is suitable for driving both N-channel and P-channel MOSFETs in low-side configurations.

Part Context

The MIC4123YML belongs to the MIC4123/4124/4125 family of highly reliable buffer/driver/MOSFET drivers. These devices utilize Bipolar/CMOS/DMOS construction for enhanced performance. The family offers multiple channel options and drive strengths. The MIC4123 specifically provides dual channels, distinguishing it from single or quad variants within the same product line.

FAQ

What is the maximum reverse current the device can withstand without latch-up?

The device is latch-up protected to greater than 200 mA of reverse current.

Can the logic inputs handle negative voltage swings?

Yes, the logic inputs are designed to withstand voltage swings down to -5 V.