L9689E

The L9689E is a high-performance, low-power USB Type-C and Power Delivery (PD) controller developed by STMicroelectronics. It supports the USB PD 3.0 specification, enabling fast charging and intelligent power management in a wide range of applications. The device integrates a robust microcontroller unit (MCU) with embedded firmware optimized for USB Type-C protocol handling, ensuring reliable communication between host and peripheral devices. This controller features an integrated voltage regulator, allowing operation from a single 3.3V supply while maintaining compliance with USB Type-C standards. It includes built-in protection mechanisms such as over-voltage, over-current, and short-circuit protection, enhancing system safety and reliability. The L9689E also supports dual-role port functionality, enabling both source and sink roles dynamically based on connected devices—ideal for versatile charging and data transfer scenarios. Key features include support for programmable power profiles, which allow custom configurations for different devices, and automatic detection of cable types and connection states via CC (Configuration Channel) signaling. It provides accurate current and voltage sensing through internal analog-to-digital converters (ADCs), facilitating precise power delivery control. Additionally, the chip offers a flexible I²C interface for configuration and monitoring, simplifying integration into existing designs. Designed for space-constrained applications, the L9689E comes in a compact WLCSP package, making it suitable for portable electronics like smartphones, tablets, wearables, and USB hubs. Its low quiescent current ensures minimal power consumption during standby, contributing to longer battery life in mobile devices. The device is fully compliant with USB Type-C and USB PD specifications, ensuring interoperability across certified ecosystems. Common use cases include smart chargers, docking stations, and battery-powered systems where efficient power management and fast charging are critical. By integrating advanced protocol handling and protection logic, the L9689E reduces the need for external components, lowering overall system cost and complexity. It is ideal for developers seeking a reliable, scalable solution for modern USB connectivity requirements.