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TLE9261BQX V33

Updated: 2026-07-17

Overview

The TLE9261BQX V33 is a power supply system basis chip (SBC) developed for automotive applications. It integrates multiple voltage regulators, a watchdog timer, and communication interfaces such as LIN and SPI. This chip is designed to meet the stringent requirements of automotive environments, including wide operating temperature ranges and resistance to electromagnetic interference. Its high level of integration reduces the need for external components, simplifying PCB design and improving reliability.

Structure and Working Principle

TLE9261BQXV33 电子元器件 INFINEON/英飞凌 数据手册深圳市龙宏电子科技有限公司

The TLE9261BQX V33 features a multi-regulator architecture, providing stable voltage outputs for microcontrollers and peripheral components. The chip includes a primary voltage regulator for the microcontroller core, a secondary regulator for peripherals, and a low-dropout (LDO) regulator for additional power needs. The watchdog timer ensures system reliability by monitoring microcontroller activity. Communication interfaces like LIN and SPI enable seamless integration with other automotive systems. Internally, the chip employs advanced fault detection and protection mechanisms, such as overvoltage and undervoltage monitoring. These features ensure safe operation even in challenging conditions, making it suitable for safety-critical automotive applications.

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Key Features

The TLE9261BQX V33 stands out for its robust design and automotive-grade reliability. Key features include multiple voltage regulators with high accuracy, a configurable watchdog timer, and support for LIN and SPI communication. The chip is qualified to AEC-Q100 standards, ensuring performance under extreme temperatures and harsh conditions. Its low quiescent current makes it energy-efficient, which is crucial for modern vehicles with increasing electronic complexity. Additionally, the chip offers diagnostic features like overtemperature protection and short-circuit detection. These capabilities enhance system safety and simplify troubleshooting during development and operation.

Application Areas

The TLE9261BQX V33 is primarily used in automotive electronic control units (ECUs), including engine control modules, transmission systems, and body control modules. Its reliability and integration make it ideal for applications where space and power efficiency are critical. The chip is also suitable for industrial applications requiring robust power management, such as automation systems and robotics. In electric and hybrid vehicles, the TLE9261BQX V33 can manage power distribution and communication between battery management systems and other vehicle subsystems. Its versatility and performance make it a preferred choice for next-generation automotive designs.

Maintenance and Precautions

TLE9261BQXV33 INFINEON/英飞凌 集成IC 封装VFQFN48 批次22+深圳市创芯联盈电子有限公司

To ensure optimal performance, the TLE9261BQX V33 should be used within its specified operating conditions, including temperature and voltage ranges. Proper thermal management is essential, as excessive heat can degrade performance. Designers should follow recommended PCB layout guidelines to minimize electromagnetic interference and ensure stable power delivery. Regular firmware updates and system diagnostics can help maintain long-term reliability. When sourcing the chip, verify that it meets AEC-Q100 standards and is supplied by reputable manufacturers to avoid counterfeit components.

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B2B Procurement Guide

When procuring the TLE9261BQX V33, consider factors such as volume requirements, lead times, and supplier reliability. The chip is commonly available through authorized distributors and direct manufacturers. Pricing varies based on order volume, with bulk purchases typically offering cost savings. Ensure that the supplier provides proper documentation, including datasheets and qualification certificates. For prototype development, sample kits may be available from manufacturers. Long-term supply agreements can help secure stable pricing and availability, especially for large-scale automotive projects.

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