TLE71851EXUMA1 Equivalent & Substitute Parts

Part Overview

The TLE71851EXUMA1 is an Infineon Technologies motor driver IC designed for brushless DC (BLDC) and brushed DC motor applications. Operating across a 5.5V to 32V supply range, this power MOSFET-based controller provides commutation and direction management functions through a parallel interface. The device is housed in a 36-BSSOP package with an exposed pad and is classified as automotive-grade.

The TLE71851EXUMA1 has reached obsolete product status. Identifying equivalent and substitute parts is essential for maintaining design continuity, ensuring supply chain reliability, and supporting long-term production requirements.

Substiute Parts

TLE71851EXUMA1

Infineon TechnologiesIn Stock: 879TLE71851EXUMA1 Datasheet

Current PartRFQ

TLE9185QXXUMA1

Infineon TechnologiesIn Stock: 3556TLE9185QXXUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE71851EXUMA1 is evaluated based on the following critical parameters:

• Motor Control Capability: Both BLDC and brushed DC motor support
• Output Stage Configuration: Pre-driver half-bridge topology (3-phase)
• Supply Voltage Range: Compatibility within 5.5V to 32V operating window
• Operating Temperature Range: -40°C to 150°C junction temperature
• Automotive Grade Compliance: Suitable for automotive applications
• RoHS3 Compliance: Environmental and regulatory alignment
• Moisture Sensitivity Level: MSL 3 classification

The TLE9185QXXUMA1 qualifies as a manufacturer-recommended substitute. While it introduces differences in interface technology (SPI versus parallel), output current specification (250mA), and packaging format (48-VQFN versus 36-BSSOP), it maintains functional equivalence for BLDC motor control applications and preserves automotive-grade certification and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The TLE9185QXXUMA1 is the manufacturer-recommended substitute for the obsolete TLE71851EXUMA1. Both devices maintain ROHS3 compliance and identical moisture sensitivity classification, ensuring regulatory and environmental alignment.

Key considerations for selection:

• Product Availability: The TLE9185QXXUMA1 carries active product status with 3498 units in stock, compared to the obsolete TLE71851EXUMA1 with 808 units available.
• Supply Voltage Compatibility: The TLE9185QXXUMA1 operates within 4.5V to 28V, which overlaps the original 5.5V to 32V range. Applications requiring operation above 28V or below 4.5V require design review.
• Package Transition: Migration from 36-BSSOP to 48-VFQFN requires PCB layout redesign and thermal management re-evaluation.
• Interface Change: The shift from parallel to SPI interface necessitates firmware and control logic modifications.
• Functional Integration: The TLE9185QXXUMA1 provides fully integrated control and power stages, whereas the TLE71851EXUMA1 functions as a pre-driver controller.

Frequently Asked Questions (FAQ)

Q: Can the TLE9185QXXUMA1 directly replace the TLE71851EXUMA1 without design changes?

A: No. While both devices support BLDC motor control and maintain automotive compliance, the interface transition from parallel to SPI, package change from 36-BSSOP to 48-VFQFN, and functional architecture differences require PCB redesign, firmware updates, and thermal analysis.

Q: What is the voltage compatibility window between these parts?

A: The TLE71851EXUMA1 operates at 5.5V to 32V, while the TLE9185QXXUMA1 operates at 4.5V to 28V. The overlap is 5.5V to 28V. Applications requiring supply voltages above 28V or below 5.5V cannot use the TLE9185QXXUMA1 as a substitute.

Q: Are both devices suitable for automotive applications?

A: The TLE71851EXUMA1 carries explicit automotive-grade certification. The TLE9185QXXUMA1 grade classification is not specified in the provided data. Automotive qualification requirements should be verified with Infineon Technologies before deployment in automotive systems.

Q: What are the packaging implications of substitution?

A: The TLE71851EXUMA1 uses 36-BSSOP (0.295", 7.50mm width), while the TLE9185QXXUMA1 uses 48-VFQFN. These are physically distinct packages requiring new PCB footprints, trace routing, and via placement. Thermal performance characteristics may differ and require re-evaluation.

Q: Does the TLE9185QXXUMA1 support brushed DC motor control?

A: The TLE9185QXXUMA1 is specified for brushless DC (BLDC) motor control only. The original TLE71851EXUMA1 supports both BLDC and brushed DC motors. Applications requiring brushed DC motor control cannot use the TLE9185QXXUMA1 as a substitute.

Q: What is the current output specification difference?

A: The TLE9185QXXUMA1 specifies 250mA output current. The TLE71851EXUMA1 does not provide an output current specification in the available data. Current capability requirements should be verified against application load specifications before substitution.