LM2724M Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM2724M is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in synchronous half-bridge configurations. This component operates with a supply voltage range of 4.3V to 6.8V and delivers peak output currents of 3A (source) and 3.2A (sink), making it suitable for power management applications requiring efficient gate drive control.

The LM2724M is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The substitute part LM2724AMX/NOPB maintains functional compatibility while offering improved compliance status and availability.

Substiute Parts

LM2724M

Texas InstrumentsIn Stock: 2086LM2724M Datasheet

Current PartRFQ

LM2724AMX/NOPB

Texas InstrumentsIn Stock: 3944LM2724AMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between LM2724M and LM2724AMX/NOPB is valid based on the following criteria:

Electrical Compatibility:

• Identical supply voltage range (4.3V ~ 6.8V)
• Identical peak output current specifications (3A source, 3.2A sink)
• Identical rise and fall times (17ns, 12ns)
• Identical operating temperature range (-40°C ~ 125°C)
• Identical input type (Non-Inverting)
• Identical driven configuration (Half-Bridge, Synchronous, 2 drivers)

Mechanical Compatibility:

• Identical package type (8-SOIC)
• Identical package dimensions (0.154", 3.90mm Width)
• Identical mounting type (Surface Mount)

Noted Difference:

• High Side Voltage - Max (Bootstrap): LM2724M rated at 35V; LM2724AMX/NOPB rated at 28V. This represents a functional limitation in the substitute part and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: Use LM2724AMX/NOPB. This part is active, ROHS3 compliant, and carries lower moisture sensitivity (MSL 1 vs. MSL 3), reducing handling and storage risks. The 28V bootstrap voltage rating is suitable for most half-bridge gate driver applications operating within standard industrial voltage ranges.

For Existing Designs Using LM2724M: LM2724AMX/NOPB is a direct functional substitute provided that the circuit design does not require bootstrap voltages exceeding 28V. If the original design operates at bootstrap voltages between 28V and 35V, the substitute part is not suitable without circuit modification.

Compliance Considerations: LM2724AMX/NOPB meets ROHS3 compliance and REACH unaffected status, making it appropriate for applications subject to environmental and regulatory requirements. The LM2724M, being RoHS non-compliant, is restricted in regulated markets and should not be used in new production.

Frequently Asked Questions (FAQ)

Q: Can LM2724AMX/NOPB replace LM2724M in all applications?

A: LM2724AMX/NOPB is electrically and mechanically compatible with LM2724M for all parameters except bootstrap voltage rating. If your circuit operates with bootstrap voltages at or below 28V, substitution is valid. If bootstrap voltage exceeds 28V, the substitute part is not suitable.

Q: What is the difference in packaging between these parts?

A: LM2724M is supplied in bulk packaging, while LM2724AMX/NOPB is supplied in Tape & Reel (TR) format. Both use the same 8-SOIC package case. Tape & Reel packaging is standard for automated assembly processes and offers improved component protection during handling and storage.

Q: Why is the moisture sensitivity level different?

A: LM2724M carries MSL 3 (168 hours), requiring controlled storage conditions and limiting shelf life. LM2724AMX/NOPB carries MSL 1 (Unlimited), eliminating moisture sensitivity concerns and simplifying inventory management and long-term storage.

Q: Is LM2724AMX/NOPB RoHS compliant?

A: Yes, LM2724AMX/NOPB is ROHS3 compliant. LM2724M is RoHS non-compliant and should not be used in new designs or production for regulated markets.

Q: What does the bootstrap voltage rating mean for my application?

A: Bootstrap voltage is the maximum voltage that can be applied to the high-side gate driver supply. LM2724M supports up to 35V, while LM2724AMX/NOPB supports up to 28V. Verify your circuit design does not exceed 28V on the bootstrap supply before using the substitute part.

Q: Are there any differences in electrical performance between these parts?

A: No. Rise time, fall time, peak output current, supply voltage range, and operating temperature range are identical between LM2724M and LM2724AMX/NOPB. The only electrical difference is the bootstrap voltage rating.