TLE9835QX Equivalent & Substitute Parts

Part Overview

The TLE9835QX is an embedded motor driver IC manufactured by Infineon Technologies, designed for automotive applications. This 48-pin VFQFN surface mount device integrates an XC800 core processor with 64kB FLASH memory and supports multiple communication interfaces including LIN, SSI, and UART. The part is currently classified as obsolete, necessitating identification of functionally compatible alternatives for ongoing system support and new designs.

Substiute Parts

TLE9835QX

Infineon TechnologiesIn Stock: 7690TLE9835QX Datasheet

Current PartRFQ

TLE9845QXXUMA1

Infineon TechnologiesIn Stock: 832TLE9845QXXUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE9835QX is determined by the following critical parameters that must remain compatible:

• Package and Pinout: Both parts must use 48-pin VFQFN with exposed pad configuration to ensure PCB compatibility without redesign
• Voltage Supply Range: Operating range must encompass or match the 3V ~ 27V specification
• Operating Temperature: Must support the full -40°C ~ 150°C automotive temperature range
• Communication Interfaces: LIN, SSI, and UART support must be present
• Automotive Grade: Parts must carry automotive qualification for equivalent reliability and compliance
• Mounting Type: Surface mount configuration must be maintained

The TLE9845QXXUMA1 meets these substitution criteria through equivalent packaging, voltage specifications, temperature range, interface support, and automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

The TLE9845QXXUMA1 serves as a direct substitute for the obsolete TLE9835QX based on matching package geometry, pinout compatibility, voltage specifications, temperature range, and automotive-grade qualification. Both devices maintain identical operating temperature limits and moisture sensitivity ratings required for automotive deployment.

The TLE9845QXXUMA1 provides expanded voltage supply range (3V ~ 28V versus 3V ~ 27V) and increased RAM capacity (4K x 8 versus 3.25K x 8), offering enhanced operational margins. The reduction in program memory (48kB versus 64kB) and I/O count (10 versus 11) must be evaluated against specific application requirements to confirm functional equivalence.

Both parts carry automotive-grade classification. The TLE9845QXXUMA1 includes explicit AEC-Q100 qualification and ROHS3 compliance documentation, providing additional assurance for automotive system integration.

Frequently Asked Questions (FAQ)

Q: Can the TLE9845QXXUMA1 be used as a direct PCB replacement for the TLE9835QX?

A: Yes. Both devices use identical 48-pin VFQFN exposed pad packaging with surface mount configuration, enabling direct PCB substitution without layout modifications.

Q: Are the communication interfaces identical between these parts?

A: Yes. Both the TLE9835QX and TLE9845QXXUMA1 support LIN, SSI, and UART interfaces, ensuring protocol compatibility in existing designs.

Q: What are the memory differences, and do they affect substitution?

A: The TLE9835QX provides 64kB FLASH and 3.25K x 8 RAM, while the TLE9845QXXUMA1 provides 48kB FLASH and 4K x 8 RAM. The 16kB reduction in program memory must be evaluated against application code size requirements. The increased RAM capacity provides additional runtime memory.

Q: Do both parts meet automotive temperature and reliability requirements?

A: Yes. Both devices operate across -40°C to 150°C junction temperature and carry automotive-grade classification with identical MSL 3 moisture sensitivity ratings, meeting automotive deployment standards.

Q: What is the significance of the I/O count difference?

A: The TLE9845QXXUMA1 provides 10 I/O pins versus 11 on the TLE9835QX. Applications requiring all 11 I/O lines must confirm that the reduced I/O count does not impact system functionality.

Q: Are there compliance or certification differences?

A: The TLE9845QXXUMA1 includes explicit AEC-Q100 qualification and ROHS3 compliance documentation. Both parts maintain REACH unaffected status and equivalent ECCN classifications for export control purposes.