LM27222M/NOPB Equivalent & Substitute Parts

Part Overview

The LM27222M/NOPB 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 part is classified as Last Time Buy, indicating end-of-life status. Identifying suitable substitute components is essential for design continuity and long-term product support.

Substiute Parts

LM27222M/NOPB

Texas InstrumentsIn Stock: 881LM27222M/NOPB Datasheet

Current PartRFQ

UCC27282DR

Texas InstrumentsIn Stock: 22729UCC27282DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM27222M/NOPB is determined by the following critical parameters:

• Package Compatibility: Both parts must use 8-SOIC surface mount packaging to ensure PCB layout compatibility without redesign.
• Functional Configuration: Half-bridge topology with 2 drivers for N-channel MOSFETs and non-inverting input logic.
• Supply Voltage Range: The substitute must operate within or encompass the original 4V to 6.85V range.
• Output Current Capability: Peak source and sink currents must meet or exceed 3A and 4.5A respectively.
• Bootstrap Voltage Rating: Maximum high-side voltage must support the original 33V specification.
• Thermal Operating Range: -40°C to 125°C junction temperature range.
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status required.

The UCC27282DR qualifies as a substitute based on these criteria, though with notable parameter differences that require engineering evaluation.

Parameter Comparison

Engineering Selection Recommendations

The UCC27282DR is an active product from Texas Instruments and represents a viable substitute for the LM27222M/NOPB based on package compatibility, functional topology, and regulatory compliance. Both devices are ROHS3 compliant and REACH unaffected.

Key considerations for selection:

• Supply Voltage: The UCC27282DR operates at 5.5V minimum, which is above the LM27222M/NOPB lower limit of 4V. Applications requiring operation below 5.5V cannot use this substitute without circuit modification.
• Output Current: The UCC27282DR provides 2.5A source and 4.6A sink current, which is lower than the original 3A and 4.5A specification. Applications requiring maximum current delivery may require design review.
• Bootstrap Voltage: The UCC27282DR supports 120V maximum bootstrap voltage, exceeding the original 33V rating and providing greater design margin for high-side gate drive applications.
• Switching Speed: The UCC27282DR exhibits faster rise and fall times (12ns, 10ns) compared to the original (17ns, 12ns), potentially reducing switching losses.
• Moisture Sensitivity: The UCC27282DR has MSL 2 (1 Year) versus MSL 1 (Unlimited) for the original, requiring stricter moisture control during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the UCC27282DR directly replace the LM27222M/NOPB without PCB modifications?

A: Yes, both devices use identical 8-SOIC packaging. Pin-to-pin compatibility and footprint compatibility allow direct substitution without PCB layout changes. However, circuit operation differences must be evaluated.

Q: What is the minimum supply voltage difference between these parts?

A: The LM27222M/NOPB operates from 4V minimum, while the UCC27282DR requires 5.5V minimum. Applications operating below 5.5V cannot use the UCC27282DR as a substitute.

Q: Are the output current ratings compatible?

A: The UCC27282DR provides lower peak output currents (2.5A source, 4.6A sink) compared to the LM27222M/NOPB (3A source, 4.5A sink). Applications requiring maximum current delivery must verify that the reduced current capability is acceptable for the target MOSFET gate charge and switching frequency.

Q: What are the implications of the different bootstrap voltage ratings?

A: The UCC27282DR supports 120V bootstrap voltage versus 33V for the original. This provides greater design margin and allows use in higher voltage applications. No circuit modification is required if the original design operated below 33V.

Q: How do the switching characteristics compare?

A: The UCC27282DR has faster rise and fall times (12ns, 10ns) versus the original (17ns, 12ns). This results in faster gate drive transitions, potentially reducing switching losses and EMI, but may require evaluation in noise-sensitive applications.

Q: What is the impact of different moisture sensitivity levels?

A: The LM27222M/NOPB has MSL 1 (Unlimited storage), while the UCC27282DR has MSL 2 (1 Year storage limit). The UCC27282DR requires stricter moisture control during component storage, handling, and assembly processes to prevent moisture-induced failures.

Q: Is the UCC27282DR suitable for new designs?

A: Yes. The UCC27282DR is an active product with full manufacturer support, making it appropriate for new designs and long-term production. The LM27222M/NOPB is Last Time Buy, making the UCC27282DR the recommended choice for design continuity.