LM5101M/NOPB Equivalent & Substitute Parts

Part Overview

The LM5101M/NOPB is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in half-bridge configurations. This device operates with a supply voltage range of 9V to 14V and delivers peak output currents of 1.6A for both source and sink operations. The LM5101M/NOPB is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure continued design support, maintain supply chain reliability, and access components with active production status.

Substiute Parts

LM5101M/NOPB

Texas InstrumentsIn Stock: 905LM5101M/NOPB Datasheet

Current PartRFQ

UCC27201ADR

Texas InstrumentsIn Stock: 24094UCC27201ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The UCC27201ADR qualifies as a direct substitute for the LM5101M/NOPB based on the following critical parameters:

Functional Equivalence:

• Both devices operate in half-bridge configuration with independent channels
• Both drive N-channel MOSFETs with non-inverting input logic
• Both feature 2 independent drivers in 8-SOIC packaging

Electrical Compatibility:

• Supply voltage range: LM5101M/NOPB operates 9V ~ 14V; UCC27201ADR operates 8V ~ 17V (overlapping range supports LM5101M/NOPB applications)
• Logic thresholds: LM5101M/NOPB VIL/VIH 0.8V/2.2V; UCC27201ADR VIL/VIH 0.8V/2.5V (compatible with standard logic levels)
• Bootstrap voltage: LM5101M/NOPB 118V max; UCC27201ADR 120V max (equivalent performance)
• Peak output current: UCC27201ADR 3A source/sink exceeds LM5101M/NOPB 1.6A (backward compatible)

Package Compatibility:

• Identical 8-SOIC package footprint (0.154", 3.90mm width)
• Pin-compatible layout for direct PCB substitution

Compliance & Status:

• Both ROHS3 compliant and MSL Level 1
• UCC27201ADR maintains Active product status, ensuring long-term availability

Parameter Comparison

Engineering Selection Recommendations

The UCC27201ADR is a qualified substitute for the LM5101M/NOPB in half-bridge gate driver applications. Selection should be based on the following factors:

Supply Chain Continuity: The LM5101M/NOPB is designated Last Time Buy, indicating discontinued production. The UCC27201ADR maintains Active status with 24,025 units in stock, ensuring reliable procurement for new designs and production continuity.

Compliance & Certification: Both devices maintain ROHS3 compliance and MSL Level 1 rating, meeting environmental and moisture sensitivity requirements for standard manufacturing processes.

Electrical Performance: The UCC27201ADR operates within the supply voltage envelope required by LM5101M/NOPB applications (8V ~ 17V range encompasses 9V ~ 14V). The higher peak output current (3A vs. 1.6A) and faster switching characteristics (8ns/7ns vs. 600ns/600ns) provide performance margin without requiring circuit redesign.

Thermal Considerations: The UCC27201ADR supports an extended operating temperature range (-40°C ~ 140°C vs. -40°C ~ 125°C), accommodating applications with elevated ambient or junction temperature requirements.

Package Compatibility: Identical 8-SOIC footprint enables direct PCB substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the UCC27201ADR directly replace the LM5101M/NOPB on existing PCBs?

A: Yes. Both devices use identical 8-SOIC packaging with the same footprint dimensions (0.154", 3.90mm width). Pin configuration and functional operation are compatible, allowing direct substitution without PCB redesign.

Q: What are the key electrical differences between these devices?

A: The UCC27201ADR provides higher peak output current (3A vs. 1.6A), faster switching times (8ns/7ns vs. 600ns/600ns), and an extended supply voltage range (8V ~ 17V vs. 9V ~ 14V). These differences represent performance improvements that maintain backward compatibility with LM5101M/NOPB applications.

Q: Are there any logic threshold compatibility concerns?

A: Logic thresholds are compatible. The LM5101M/NOPB specifies VIL/VIH of 0.8V/2.2V, while the UCC27201ADR specifies 0.8V/2.5V. Both devices accept standard logic-level input signals without modification to drive circuitry.

Q: Does the UCC27201ADR support the same bootstrap voltage as the LM5101M/NOPB?

A: Yes. The LM5101M/NOPB supports 118V maximum bootstrap voltage, and the UCC27201ADR supports 120V maximum. Both devices are suitable for high-side gate drive applications within these voltage specifications.

Q: What is the significance of the faster rise/fall times in the UCC27201ADR?

A: The UCC27201ADR exhibits significantly faster switching characteristics (8ns/7ns vs. 600ns/600ns). This improvement reduces gate drive delay and can enhance overall system efficiency and EMI performance. Existing designs will continue to function correctly with the faster switching behavior.

Q: Are there any compliance or certification differences?

A: Both devices maintain identical compliance status: ROHS3 compliant and MSL Level 1 (Unlimited). No additional qualification or testing is required for standard manufacturing environments.

Q: Why is the UCC27201ADR recommended over the LM5101M/NOPB?

A: The LM5101M/NOPB is Last Time Buy, indicating end-of-life status. The UCC27201ADR is actively manufactured with substantial inventory availability, ensuring long-term supply chain reliability and design support.