LM5111-1MY Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5111-1MY is a low-side gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in power management applications. This device features non-inverting logic, dual independent channels, and operates across a 4.6V to 14V supply range. The LM5111-1MY is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain compatibility with the 8-MSOP package footprint and preserve the core electrical characteristics required for low-side gate driving applications.

Substiute Parts

LM5111-1MY

Texas InstrumentsIn Stock: 1229LM5111-1MY Datasheet

Current PartRFQ

LM5111-1MY/NOPB

Texas InstrumentsIn Stock: 1371LM5111-1MY/NOPB Datasheet

DirectRFQ

ADP3654ARHZ-RL

Analog Devices Inc.In Stock: 13228ADP3654ARHZ-RL Datasheet

MFR RecommendedRFQ

MIC4127YMME

Microchip TechnologyIn Stock: 1227MIC4127YMME Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5111-1MY is determined by the following mandatory parameters:

• Driven configuration must be low-side
• Channel type must be independent with 2 drivers
• Gate type must be N-channel MOSFET
• Input logic must be non-inverting
• Package must be 8-MSOP or mechanically compatible variant
• Operating temperature range must encompass -40°C to 125°C
• Supply voltage range must support the application's operating window

The substitute parts identified below satisfy these core requirements. Variations in peak output current, rise/fall time, and supply voltage upper limits represent acceptable parameter ranges for low-side gate driver applications, provided the minimum specifications meet or exceed the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

LM5111-1MY/NOPB is the direct equivalent from Texas Instruments, offering identical electrical specifications and package configuration. This part is currently in active production status with ROHS3 compliance, making it the primary replacement for obsolete LM5111-1MY units. The /NOPB suffix indicates lead-free, RoHS-compliant packaging.

ADP3654ARHZ-RL from Analog Devices Inc. provides enhanced performance characteristics, including faster rise/fall times (10ns vs. 14ns/12ns) and higher source current capability (4A vs. 3A). The supply voltage range extends to 18V, offering broader application flexibility. This part is suitable for designs requiring improved switching speed and current delivery.

MIC4127YMME from Microchip Technology maintains functional compatibility with lower peak output current specifications (1.5A source and sink). This part is appropriate for applications with reduced gate drive current requirements. The MSL-3 moisture sensitivity rating requires controlled storage conditions compared to MSL-1 alternatives.

All three substitute parts maintain the mandatory low-side, dual-channel, non-inverting configuration with N-channel MOSFET gate drive capability and compatible 8-MSOP package footprints. Selection should be based on specific application requirements for output current, switching speed, and supply voltage range.

Frequently Asked Questions (FAQ)

Q: Can LM5111-1MY/NOPB be used as a direct replacement for LM5111-1MY?

A: Yes. LM5111-1MY/NOPB is the direct equivalent with identical electrical specifications. The /NOPB designation indicates lead-free, RoHS-compliant packaging. Both parts share the same 8-MSOP footprint and electrical performance characteristics.

Q: What are the key differences between ADP3654ARHZ-RL and the original LM5111-1MY?

A: ADP3654ARHZ-RL offers faster switching performance (10ns rise/fall time vs. 14ns/12ns) and extended supply voltage range (4.5V to 18V vs. 4.6V to 14V). Peak output current is symmetric at 4A for both source and sink, compared to the asymmetric 3A/5A specification of LM5111-1MY. The package includes an exposed pad variant (8-MSOP-EP).

Q: Is MIC4127YMME suitable for all LM5111-1MY applications?

A: MIC4127YMME maintains functional compatibility for low-side gate driving with identical dual-channel, non-inverting configuration. However, peak output current is limited to 1.5A for both source and sink. Applications requiring the original 3A/5A output current specification should use LM5111-1MY/NOPB or ADP3654ARHZ-RL instead.

Q: Are there package compatibility concerns when substituting these parts?

A: All substitute parts use 8-MSOP or 8-TSSOP package variants with 0.118" (3.00mm) width, maintaining PCB footprint compatibility. ADP3654ARHZ-RL and MIC4127YMME include exposed pad variants (8-MSOP-EP), which provide improved thermal performance but require PCB pad design accommodation.

Q: What is the impact of MSL rating differences?

A: LM5111-1MY, LM5111-1MY/NOPB, and ADP3654ARHZ-RL carry MSL-1 (unlimited moisture sensitivity), allowing indefinite shelf storage without baking. MIC4127YMME carries MSL-3 (168 hours), requiring controlled storage conditions and potential baking procedures before reflow soldering if storage time exceeds specified limits.

Q: Do all substitute parts meet current RoHS compliance requirements?

A: LM5111-1MY/NOPB, ADP3654ARHZ-RL, and MIC4127YMME are all ROHS3 compliant. The original LM5111-1MY is RoHS non-compliant. For applications requiring RoHS compliance, use one of the three active substitute parts.