📌 What It Is

The TLE8209‑1E is an automotive‑grade low‑side driver / motor driver IC manufactured by Infineon Technologies. It comes in a 20‑lead HSOP/SOP‑20 package and is designed to control loads such as motors, solenoids, lamps, relays, and similar inductive devices, especially in automotive electronic control units (ECUs). 

🧠 Key Functional Overview

• Dual low‑side outputs: The chip integrates two independent low‑side switching outputs capable of driving moderately high current loads. 

• Designed for automotive applications: Used for driving DC motors, actuators (like HVAC blower motors), lighting loads, fuel injectors, door lock solenoids, and other automotive devices. 

• Wide supply voltage range: It can operate from typical automotive voltages (around 4.5 V up to ~28 V), making it suitable for 12 V vehicle systems. 

• Protection features: Includes typical driver protections such as over‑temperature and over‑current shutdown, and integrated flyback diodes for inductive load protection. 

• Diagnostic feedback: Some implementations offer diagnostic feedback on load or supply conditions. 

• Automotive ECU use: The part frequently appears in ECU repair listings for Bosch engine control units, indicating its role in automotive embedded control boards. 

📦 Package & Identification

• Package: HSOP‑20 (20 pins). 

• Logic Family: Low‑side power driver with integrated MOSFETs. 

• Status: RoHS compliant and available as new original stock from component distributors.