LM5101BMAX Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5101BMAX is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in half-bridge configurations. This device operates with a supply voltage range of 9V to 14V and delivers peak output currents of 2A (source) and 2A (sink). The LM5101BMAX is classified as obsolete, making identification of suitable substitute components essential for new designs and production continuity.

Substiute Parts

LM5101BMAX

Texas InstrumentsIn Stock: 731LM5101BMAX Datasheet

Current PartRFQ

LM5101BMAX/NOPB

Texas InstrumentsIn Stock: 2448LM5101BMAX/NOPB Datasheet

DirectRFQ

ISL2111ABZ

Renesas Electronics CorporationIn Stock: 1360ISL2111ABZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5101BMAX is determined by the following critical parameters:

• Driven Configuration: Must be half-bridge
• Number of Drivers: Must be 2 independent channels
• Gate Type: Must be N-channel MOSFET
• Input Type: Must be non-inverting
• Package / Case: Must be 8-SOIC with matching physical dimensions
• Mounting Type: Must be surface mount
• Operating Temperature Range: Must support -40°C ~ 125°C (TJ)

Substitute parts must maintain compatibility across these parameters. Variations in supply voltage range, output current capability, bootstrap voltage, and rise/fall time characteristics are permissible provided the substitute meets or exceeds the original specifications.

Parameter Comparison

Engineering Selection Recommendations

LM5101BMAX/NOPB is the direct equivalent substitute for the obsolete LM5101BMAX. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The primary distinction is product status: LM5101BMAX/NOPB is active and available in higher inventory quantities (2384 pcs vs. 703 pcs). LM5101BMAX/NOPB achieves ROHS3 compliance, whereas the original LM5101BMAX is RoHS non-compliant. This substitute is recommended for designs requiring regulatory compliance and long-term supply assurance.

ISL2111ABZ is a manufacturer-recommended alternative from Renesas Electronics Corporation. This substitute maintains all critical functional parameters: half-bridge configuration, dual independent N-channel MOSFET drivers, non-inverting input logic, and identical 8-SOIC package dimensions. ISL2111ABZ provides enhanced performance characteristics, including higher peak output currents (3A source, 4A sink vs. 2A, 2A), faster rise/fall times (9ns, 7.5ns vs. 570ns, 430ns), and an extended supply voltage floor (8V vs. 9V). ISL2111ABZ is ROHS3 compliant and actively produced. This substitute is suitable for applications where improved drive capability and switching speed are beneficial.

Frequently Asked Questions (FAQ)

Q: Can LM5101BMAX/NOPB be used as a direct replacement for LM5101BMAX?

A: Yes. LM5101BMAX/NOPB is electrically and mechanically identical to LM5101BMAX. Both devices share the same supply voltage range (9V ~ 14V), output current ratings (2A, 2A), bootstrap voltage (118V), and 8-SOIC package. The primary advantage of LM5101BMAX/NOPB is active product status and ROHS3 compliance.

Q: Is ISL2111ABZ compatible with LM5101BMAX applications?

A: ISL2111ABZ is functionally compatible for half-bridge gate driver applications. Both devices operate with identical driven configuration, driver count, gate type, input logic type, and package form factor. ISL2111ABZ operates across a wider supply voltage range (8V ~ 14V) and delivers higher peak output currents (3A, 4A). The significantly faster rise/fall times (9ns, 7.5ns) may affect circuit timing behavior in applications with tight switching synchronization requirements.

Q: What are the packaging differences between these substitutes?

A: LM5101BMAX is supplied in standard packaging. LM5101BMAX/NOPB is supplied in Tape & Reel (TR) format, suitable for automated assembly. ISL2111ABZ is supplied in Tube packaging. All three devices use identical 8-SOIC (0.154", 3.90mm Width) package cases and are surface-mount components.

Q: Are all three parts RoHS compliant?

A: LM5101BMAX is RoHS non-compliant. Both LM5101BMAX/NOPB and ISL2111ABZ are ROHS3 compliant. For applications requiring regulatory compliance with RoHS directives, LM5101BMAX/NOPB or ISL2111ABZ must be selected.

Q: What is the inventory status of these parts?

A: LM5101BMAX has 703 pcs in stock (obsolete status). LM5101BMAX/NOPB has 2384 pcs in stock (active status). ISL2111ABZ has 1343 pcs in stock (active status). For production continuity, LM5101BMAX/NOPB or ISL2111ABZ are recommended.