LM5101ASDX Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The LM5101ASDX 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 3A for both source and sink operations. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute parts ensures design continuity and supply chain reliability for applications requiring half-bridge gate driver functionality.

Substiute Parts

LM5101ASDX

Texas InstrumentsIn Stock: 1069LM5101ASDX Datasheet

Current PartRFQ

LM5101ASDX/NOPB

Texas InstrumentsIn Stock: 2223LM5101ASDX/NOPB Datasheet

DirectRFQ

UCC27201ADPRR

Texas InstrumentsIn Stock: 15178UCC27201ADPRR Datasheet

MFR RecommendedRFQ

ISL2111ARTZ

Renesas Electronics CorporationIn Stock: 9546ISL2111ARTZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5101ASDX is determined by the following critical parameters:

• Driven Configuration: Must be Half-Bridge
• Number of Drivers: Must be 2
• Gate Type: Must be N-Channel MOSFET
• Input Type: Must be Non-Inverting
• Supply Voltage Range: Must accommodate the 9V ~ 14V operating window
• Peak Output Current: Must meet or exceed 3A source and sink capability
• Bootstrap Voltage: Must support minimum 118V operation
• Package Compatibility: Surface mount, 10-pin form factor
• Regulatory Compliance: ROHS3 and REACH compliance required

The substitute parts listed below meet these core functional and electrical requirements while maintaining compatibility with existing PCB layouts and thermal management designs.

Parameter Comparison

Engineering Selection Recommendations

LM5101ASDX/NOPB is the direct equivalent part from Texas Instruments. This substitute maintains identical electrical specifications and packaging to the original LM5101ASDX, with the primary distinction being product status transition from Last Time Buy to Active. This part is recommended for immediate replacement in new designs and production runs requiring continuity with existing designs.

UCC27201ADPRR is a manufacturer-recommended alternative from Texas Instruments. This part expands the supply voltage range to 8V ~ 17V and offers improved rise and fall times (8ns and 7ns respectively compared to 430ns and 260ns). The extended operating temperature range to 140°C provides additional thermal margin. Logic voltage thresholds differ, requiring signal conditioning evaluation in applications with marginal input signal levels. Moisture sensitivity increases to MSL 2, necessitating appropriate storage and handling protocols.

ISL2111ARTZ is a manufacturer-recommended alternative from Renesas Electronics Corporation. This part maintains compatibility within the 8V ~ 14V supply range and delivers equivalent peak output currents with enhanced sink capability (4A versus 3A). Rise and fall times are significantly faster (9ns and 7.5ns). The 10-TDFN package variant requires PCB layout verification for thermal and electrical performance equivalence. Moisture sensitivity is MSL 2, consistent with UCC27201ADPRR handling requirements.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part specification.

Frequently Asked Questions (FAQ)

Q: Can LM5101ASDX/NOPB be used as a direct drop-in replacement?

A: Yes. LM5101ASDX/NOPB is electrically and mechanically identical to LM5101ASDX. The only difference is product status change from Last Time Buy to Active. No design modifications are required.

Q: What are the key differences between UCC27201ADPRR and the original LM5101ASDX?

A: UCC27201ADPRR offers wider supply voltage range (8V ~ 17V versus 9V ~ 14V), faster switching times (8ns/7ns rise/fall versus 430ns/260ns), and extended operating temperature to 140°C. Logic voltage thresholds differ (0.8V/2.5V versus 2.3V/-), requiring input signal level assessment. Moisture sensitivity increases to MSL 2.

Q: Is the ISL2111ARTZ package compatible with existing PCB designs?

A: ISL2111ARTZ uses a 10-TDFN package variant instead of 10-WSON. While both are 10-pin surface mount packages in 4x4mm form factor, PCB footprint differences require layout verification. Thermal performance and electrical connectivity must be confirmed before implementation.

Q: Which substitute part offers the best performance improvement?

A: UCC27201ADPRR and ISL2111ARTZ both provide significantly faster switching times compared to the original LM5101ASDX. UCC27201ADPRR offers the widest supply voltage range and highest operating temperature. ISL2111ARTZ provides the highest sink current capability (4A). Selection depends on specific application requirements for switching speed, voltage range, and thermal performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LM5101ASDX/NOPB, UCC27201ADPRR, and ISL2111ARTZ are all ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original part.

Q: What is the impact of MSL 2 moisture sensitivity on handling?

A: Parts with MSL 2 rating require storage in controlled humidity environments (typically below 30% relative humidity) and have a one-year shelf life from the date of manufacture. Proper baking procedures are required if moisture absorption occurs during storage. MSL 1 parts (LM5101ASDX/NOPB) have unlimited shelf life and less stringent handling requirements.