LM5101CMA Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5101CMA is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in half-bridge configurations. This device features non-inverting logic inputs and independent channel control with 1A source and sink output current capability. The LM5101CMA is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. Alternative parts must maintain functional compatibility across critical electrical and mechanical parameters while meeting current compliance standards.

Substiute Parts

LM5101CMA

Texas InstrumentsIn Stock: 2129LM5101CMA Datasheet

Current PartRFQ

LM5101CMA/NOPB

Texas InstrumentsIn Stock: 1147LM5101CMA/NOPB Datasheet

DirectRFQ

ISL2111ABZ

Renesas Electronics CorporationIn Stock: 1360ISL2111ABZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM5101CMA are qualified based on the following critical parameters that determine functional interchangeability:

• Driven Configuration & Channel Type: Must be half-bridge with independent N-channel MOSFET drivers
• Input Logic: Must be non-inverting to maintain signal compatibility
• Package & Pinout: Must be 8-SOIC surface mount with identical mechanical footprint
• Operating Temperature Range: Must support -40°C to 125°C junction temperature
• Supply Voltage Range: Must operate within or encompass the 9V to 14V supply specification
• Bootstrap Voltage Rating: Must support minimum 114V high-side voltage capability

Two substitute parts meet these criteria: LM5101CMA/NOPB (direct Texas Instruments variant) and ISL2111ABZ (Renesas Electronics alternative).

Parameter Comparison

Engineering Selection Recommendations

LM5101CMA/NOPB is the direct manufacturer variant of the obsolete LM5101CMA. This part maintains identical electrical specifications and package configuration while offering ROHS3 compliance and Last Time Buy status. Selection of LM5101CMA/NOPB is appropriate for designs requiring exact parameter matching and minimal design validation effort. However, availability is limited due to Last Time Buy designation.

ISL2111ABZ is an active production alternative from Renesas Electronics Corporation. This part provides superior performance characteristics including higher peak output current (3A source, 4A sink versus 1A/1A), faster switching times (9ns/7.5ns rise/fall versus 990ns/715ns), and lower logic input thresholds (1.4V/2.2V). The ISL2111ABZ operates across an expanded supply voltage range (8V to 14V) and maintains the same 8-SOIC package footprint. ROHS3 compliance and active product status ensure long-term availability and supply chain stability. The ISL2111ABZ is suitable for new designs and production transitions requiring sustained component availability.

Frequently Asked Questions (FAQ)

Q: Can LM5101CMA/NOPB be used as a direct replacement for LM5101CMA?

A: Yes. LM5101CMA/NOPB is the same part with identical electrical and mechanical specifications. The primary differences are packaging format (Tube versus unspecified) and compliance status (ROHS3 Compliant versus non-compliant). Pinout and functional performance are identical.

Q: Is ISL2111ABZ a pin-for-pin compatible substitute?

A: Yes. ISL2111ABZ shares the same 8-SOIC package footprint and pinout configuration as LM5101CMA. Both devices are half-bridge gate drivers with non-inverting inputs and independent channel control. PCB layout modifications are not required for package compatibility.

Q: What are the key electrical differences between LM5101CMA and ISL2111ABZ?

A: ISL2111ABZ provides higher output current capability (3A/4A source/sink versus 1A/1A), significantly faster switching performance (9ns/7.5ns versus 990ns/715ns rise/fall times), and lower logic input thresholds (1.4V/2.2V versus 2.3V). Supply voltage range is expanded to 8V minimum. Bootstrap voltage rating is slightly lower (114V versus 118V). These differences must be evaluated against specific application requirements.

Q: Does ISL2111ABZ require circuit modifications when substituting for LM5101CMA?

A: Circuit modifications are not required for basic functionality. However, the significantly faster switching times of ISL2111ABZ may require PCB layout optimization to minimize parasitic inductance and ringing. Applications sensitive to switching speed or operating at the limits of the LM5101CMA's 1A output current may benefit from ISL2111ABZ's enhanced performance without design changes.

Q: What is the supply voltage compatibility between these parts?

A: LM5101CMA and LM5101CMA/NOPB require 9V to 14V supply voltage. ISL2111ABZ operates across 8V to 14V. All three parts are compatible in applications using 9V to 14V supplies. ISL2111ABZ provides additional flexibility for systems operating at 8V supply levels.

Q: Are there compliance or regulatory differences between these substitutes?

A: LM5101CMA is RoHS non-compliant. Both LM5101CMA/NOPB and ISL2111ABZ are ROHS3 compliant. All three parts are REACH Unaffected and classified as EAR99 for export control purposes. Selection should consider target market compliance requirements.