TLE42702DATMA1

Overview

The TLE42702DATMA1 is a low-dropout (LDO) linear voltage regulator manufactured by Infineon Technologies, tailored for harsh environments like automotive systems. It provides a fixed 5V output with a maximum input voltage of 45V, making it suitable for 12V/24V vehicle networks. The device integrates protections such as thermal shutdown and reverse polarity safeguards, ensuring reliability in critical applications. Designed for minimal power loss, it features a low quiescent current (typ. 40µA) and a dropout voltage as low as 350mV at 150mA load. Its compact TO-252-5 package (DPAK) facilitates space-efficient PCB designs, while AEC-Q100 qualification confirms its automotive-grade durability.

Structure and Working Principle

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The TLE42702DATMA1 comprises a voltage reference, error amplifier, pass transistor, and protection circuits. The error amplifier compares the output voltage (fed back via an internal divider) to a stable reference, adjusting the pass transistor to maintain a constant 5V output. The dropout voltage is minimized through optimized transistor design. Key structural elements include a built-in charge pump for gate drive voltage and a robust output stage capable of sourcing up to 400mA. Protection features like current limiting and overtemperature shutdown activate automatically to prevent damage during fault conditions, such as short circuits or excessive ambient temperatures.

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Key Features

The TLE42702DATMA1 stands out for its high accuracy (±2% output voltage tolerance) and ultra-low standby current, critical for battery-powered systems. Its wide input voltage range (4.5V–45V) accommodates load dump transients common in automotive environments. Reverse polarity protection (up to -45V) enhances system resilience. Additional advantages include fast transient response and low noise output, making it suitable for sensitive analog or digital loads. The device’s ceramic-capacitor compatibility simplifies design, while its -40°C to +150°C operating range ensures performance across extreme climates.

Application Areas

Primary applications include automotive ECUs (engine control units), infotainment systems, and dashboard modules, where stable voltage is vital. Industrial uses encompass PLCs, sensors, and power management in ruggedized equipment. Its robustness also suits renewable energy systems, such as solar charge controllers. The regulator’s ability to handle high-voltage transients makes it ideal for 24V truck or agricultural vehicle electronics. Secondary markets include marine and aerospace subsystems, where reliability under thermal stress is paramount.

Maintenance and Precautions

TLE42702DATMA1 电子元器件 Infineon(英飞凌) 封装TO-252-4 批次24+

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To ensure longevity, avoid exposing the TLE42702DATMA1 to input voltages beyond 45V or reverse-polarity connections without external protection. Heat dissipation via PCB copper area is recommended for high-current operation. Regularly inspect solder joints for cracks in high-vibration environments. Storage should adhere to ESD-safe practices, with humidity-controlled conditions. For diagnostics, monitor output voltage ripple and quiescent current; deviations may indicate aging or fault conditions. Replacement is advised if thermal shutdown activates frequently under normal loads.

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B2B Procurement Guide

When sourcing the TLE42702DATMA1, prioritize authorized distributors like Infineon’s global partners to avoid counterfeit risks. MOQs typically start at 1,000 units, with price breaks at 10,000 units. Lead times vary (4–12 weeks) due to automotive demand peaks. Verify batch traceability and RoHS/REACH compliance documentation. For prototyping, sample kits are available through Infineon’s online platform. Consider alternate part numbers (e.g., TLE42702D) for non-automotive grades if cost reduction is critical.