LM5104SD Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5104SD is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in synchronous half-bridge configurations. This device features inverting and non-inverting input channels with 1.6A peak output current capability and operates across a 9V to 14V supply voltage range.

The LM5104SD carries an obsolete product status, making identification of suitable alternatives essential for ongoing design support and production continuity. Active equivalent parts with identical electrical and mechanical specifications are available to ensure seamless integration into existing designs.

Substiute Parts

LM5104SD

Texas InstrumentsIn Stock: 1027LM5104SD Datasheet

Current PartRFQ

LM5104SD/NOPB

Texas InstrumentsIn Stock: 2121LM5104SD/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM5104SD is determined by strict equivalence across the following critical parameters:

• Driven Configuration: Half-Bridge topology must be maintained
• Number of Drivers: Exactly 2 drivers required
• Gate Type: N-Channel MOSFET gate driving capability
• Voltage - Supply: 9V ~ 14V operating range
• Current - Peak Output: 1.6A source and sink capability
• High Side Voltage - Max (Bootstrap): 118V maximum rating
• Rise / Fall Time: 600ns typical switching performance
• Operating Temperature Range: -40°C ~ 125°C
• Package / Case: 10-WDFN Exposed Pad form factor
• Mounting Type: Surface Mount configuration

The LM5104SD/NOPB represents a direct functional equivalent with identical electrical specifications and mechanical packaging. The primary distinction lies in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LM5104SD/NOPB is the direct equivalent for the obsolete LM5104SD. Both parts share identical electrical specifications, mechanical packaging, and thermal operating ranges. The LM5104SD/NOPB maintains active product status with Texas Instruments and carries ROHS3 compliance certification, providing regulatory alignment for new designs and production continuity.

Selection between these parts should be based on:

• Product Availability: The LM5104SD/NOPB is actively manufactured and stocked, whereas the LM5104SD is obsolete
• Regulatory Compliance: The LM5104SD/NOPB meets ROHS3 requirements, suitable for applications with environmental compliance mandates
• Packaging Format: The LM5104SD/NOPB is supplied in Tape & Reel format, standard for automated assembly operations

No electrical or mechanical redesign is required when transitioning from LM5104SD to LM5104SD/NOPB.

Frequently Asked Questions (FAQ)

Q: Can LM5104SD/NOPB be used as a direct replacement for LM5104SD?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including supply voltage, output current, switching performance, and package form factor. No circuit modifications are required.

Q: What is the difference between LM5104SD and LM5104SD/NOPB?

A: The primary differences are product status and compliance certifications. LM5104SD is obsolete and RoHS non-compliant, while LM5104SD/NOPB is active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there any thermal or operating temperature differences?

A: No. Both parts operate across the identical temperature range of -40°C to 125°C (junction temperature) with identical rise and fall times of 600ns.

Q: What packaging format is supplied for each part?

A: LM5104SD is supplied in standard packaging, while LM5104SD/NOPB is supplied in Tape & Reel format, which is standard for high-volume automated assembly.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use the 10-WDFN Exposed Pad surface mount package with identical pinout and footprint. No PCB layout modifications are necessary.

Q: What is the significance of the NOPB designation?

A: NOPB indicates "No Plumbum" (lead-free) packaging, which aligns with ROHS3 compliance requirements and environmental regulations.