LM27222M Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM27222M is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in synchronous half-bridge configurations. This device operates with a supply voltage range of 4V to 6.85V and delivers peak output currents of 3A (source) and 4.5A (sink). The LM27222M is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring half-bridge gate driver functionality.

Substiute Parts

LM27222M

Texas InstrumentsIn Stock: 1358LM27222M Datasheet

Current PartRFQ

UCC27282DR

Texas InstrumentsIn Stock: 22729UCC27282DR Datasheet

MFR RecommendedRFQ

LM27222M/NOPB

Texas InstrumentsIn Stock: 881LM27222M/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM27222M is determined by the following critical parameters:

Primary Compatibility Criteria:

• Half-bridge driven configuration
• 2-channel driver architecture
• N-channel MOSFET gate type
• Non-inverting input logic
• 8-SOIC package footprint compatibility
• Surface mount mounting type

Secondary Compatibility Criteria:

• Supply voltage range must encompass or overlap with 4V ~ 6.85V
• Peak output current capability (source and sink) must meet or exceed application requirements
• Bootstrap voltage rating must support the application's high-side voltage demands
• Operating temperature range must cover -40°C ~ 125°C minimum

The UCC27282DR qualifies as a manufacturer-recommended substitute. While it operates at a higher supply voltage range (5.5V ~ 16V) and higher bootstrap voltage (120V), it maintains the same package footprint, half-bridge configuration, 2-channel architecture, and non-inverting input type. The UCC27282DR is in Active product status, ensuring long-term availability.

The LM27222M/NOPB is a direct equivalent variant of the main part, differing only in packaging format (Tube versus Cut Tape). It maintains identical electrical specifications and is suitable for applications where packaging format is interchangeable.

Parameter Comparison

Engineering Selection Recommendations

For LM27222M/NOPB: This part is a direct equivalent to the LM27222M, maintaining identical electrical and thermal specifications. Selection between these two variants depends solely on packaging format requirements. Both parts carry Last Time Buy status, indicating limited future availability. The LM27222M/NOPB in Tube packaging may be preferred for high-volume production environments, while the Cut Tape format of the original LM27222M suits automated assembly processes.

For UCC27282DR: This part is suitable as a substitute when the application's design permits operation within the higher supply voltage range (5.5V ~ 16V) and can accommodate the higher bootstrap voltage rating (120V). The UCC27282DR offers the advantage of Active product status, ensuring extended availability and supply chain stability. However, the peak output current specifications are lower (2.5A source, 4.6A sink compared to 3A and 4.5A), requiring verification that the application's gate drive current demands do not exceed these limits. The UCC27282DR also exhibits faster rise and fall times (12ns and 10ns), which may improve switching performance in certain topologies. Both parts maintain ROHS3 compliance and identical package footprints, enabling direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the UCC27282DR directly replace the LM27222M in all applications?

A: Direct replacement requires verification of three conditions: (1) the application's supply voltage must fall within 5.5V ~ 16V, (2) the gate drive current requirements must not exceed 2.5A (source) or 4.6A (sink), and (3) the high-side voltage must not exceed 120V. If all three conditions are met, the UCC27282DR is electrically compatible. The identical 8-SOIC package footprint ensures PCB layout compatibility without modification.

Q: What is the difference between LM27222M and LM27222M/NOPB?

A: These parts are electrically and functionally identical. The difference is packaging format only. LM27222M is supplied in Cut Tape format, while LM27222M/NOPB is supplied in Tube packaging. Both carry Last Time Buy status. Selection depends on assembly line requirements and inventory management practices.

Q: Why is the LM27222M in Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued or is discontinuing production of this part. Existing inventory is available for purchase, but no new production runs are planned. This necessitates identifying substitute parts for long-term design continuity.

Q: Are there any thermal or reliability differences between these parts?

A: All three parts operate across the same temperature range (-40°C ~ 125°C). The LM27222M and LM27222M/NOPB have MSL rating of 1 (Unlimited moisture sensitivity), while the UCC27282DR has MSL rating of 2 (1 Year). This indicates the UCC27282DR requires more careful handling and storage to prevent moisture absorption. Both ratings are standard for surface-mount gate driver ICs.

Q: Can I use the UCC27282DR in a 4V supply application?

A: No. The UCC27282DR minimum supply voltage is 5.5V, which exceeds the 4V minimum of the LM27222M. Applications operating at 4V supply voltage require the LM27222M or LM27222M/NOPB. The UCC27282DR is suitable only for applications with supply voltages of 5.5V or higher.

Q: What are the switching speed implications of using the UCC27282DR?

A: The UCC27282DR exhibits faster rise and fall times (12ns and 10ns) compared to the LM27222M (17ns and 12ns). Faster switching transitions may reduce gate drive losses and improve overall system efficiency, but may also increase electromagnetic interference (EMI) in sensitive applications. System-level EMI testing is recommended when transitioning to the UCC27282DR.