LM5111-2MY Low-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5111-2MY is a low-side gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in power management applications. This device features independent dual-channel configuration with inverting input logic and is housed in an 8-HVSSOP surface mount package.

The LM5111-2MY carries an Obsolete product status, making it necessary to identify equivalent and substitute parts for new designs or ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for low-side gate driver applications.

Substiute Parts

LM5111-2MY

Texas InstrumentsIn Stock: 2032LM5111-2MY Datasheet

Current PartRFQ

LM5111-2MY/NOPB

Texas InstrumentsIn Stock: 2101LM5111-2MY/NOPB Datasheet

DirectRFQ

MIC4126YMME

Microchip TechnologyIn Stock: 2301MIC4126YMME Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM5111-2MY is determined by the following critical parameters:

• Driven Configuration: Must be Low-Side
• Channel Type: Must be Independent dual-channel
• Gate Type: Must support N-Channel MOSFET driving
• Input Logic: Must be Inverting
• Package Compatibility: Must be 8-pin surface mount with 3.00mm width
• Operating Temperature Range: Must support -40°C ~ 125°C minimum
• Supply Voltage Range: Must accommodate 4.6V ~ 14V operation
• Output Current Capability: Source and sink current ratings must meet or exceed application requirements

Parts are grouped into two categories: direct equivalents (identical specifications) and functional substitutes (compatible within parameter tolerances for low-side gate driver applications).

Parameter Comparison

Engineering Selection Recommendations

LM5111-2MY/NOPB is the direct equivalent part from Texas Instruments. It maintains identical electrical specifications and package configuration as the LM5111-2MY. This part carries Last Time Buy status and ROHS3 compliance, making it suitable for designs requiring regulatory compliance. Inventory availability is equivalent at 2000 pieces.

MIC4126YMME from Microchip Technology is a functional substitute for applications where supply voltage range extension and regulatory compliance are priorities. This part is Active status and ROHS3 compliant. However, the MIC4126YMME has reduced peak output current capability (1.5A source/sink versus 3A/5A) and slower switching characteristics (20ns/18ns rise/fall time versus 14ns/12ns). Selection of this part requires verification that application current requirements do not exceed 1.5A per channel. The MIC4126YMME supports extended supply voltage operation (4.5V ~ 20V) and features an exposed pad variant (8-MSOP-EP) for improved thermal performance.

Selection between these parts depends on application current requirements, supply voltage range, thermal management needs, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can LM5111-2MY/NOPB be used as a direct replacement for LM5111-2MY?

A: Yes. LM5111-2MY/NOPB is electrically and mechanically identical to LM5111-2MY. The /NOPB suffix indicates lead-free and RoHS compliant packaging. Both parts feature identical supply voltage range (4.6V ~ 14V), output current ratings (3A/5A), and package configuration (8-HVSSOP).

Q: Is MIC4126YMME compatible with LM5111-2MY applications?

A: MIC4126YMME is functionally compatible for low-side gate driver applications with the following constraints: peak output current is limited to 1.5A per channel (versus 3A/5A on LM5111-2MY), and switching speed is reduced (20ns/18ns rise/fall time versus 14ns/12ns). Applications requiring higher current drive or faster switching must use LM5111-2MY or LM5111-2MY/NOPB. MIC4126YMME supports extended supply voltage (4.5V ~ 20V) and is suitable for designs with lower current requirements.

Q: What are the package differences between these parts?

A: LM5111-2MY and LM5111-2MY/NOPB use 8-HVSSOP packaging. MIC4126YMME uses 8-MSOP-EP (with exposed pad). All three parts maintain 0.118" width and 3.00mm pitch, ensuring PCB footprint compatibility. The exposed pad on MIC4126YMME provides enhanced thermal dissipation capability.

Q: Are there compliance differences between these parts?

A: LM5111-2MY is RoHS non-compliant. LM5111-2MY/NOPB and MIC4126YMME are both ROHS3 compliant. For applications requiring regulatory compliance, use LM5111-2MY/NOPB or MIC4126YMME. Moisture sensitivity differs: LM5111-2MY and LM5111-2MY/NOPB are MSL 1 (unlimited), while MIC4126YMME is MSL 3 (168 hours).

Q: What determines whether a substitute part is acceptable for my application?

A: Substitution acceptability is determined by: (1) matching driven configuration (low-side), (2) matching channel count and type (dual independent N-channel), (3) matching input logic (inverting), (4) supply voltage range compatibility, (5) output current capability meeting or exceeding application requirements, (6) switching speed meeting application timing requirements, and (7) package footprint compatibility.