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CYPD4126-40LQXIT

IFXCYPD4126-40LQXIT

Infineon Technologies
USB Interface IC USB-C PC
2,762 in stock

Overview

The CYPD4126-40LQXIT is a highly integrated USB Type-C and Power Delivery (PD) controller featuring an Arm Cortex-M0 processor and 128KB of Flash. It is designed to manage complex power negotiation and data path multiplexing for dual-role power or downstream-facing ports. With its programmable digital blocks and low-power architecture, it provides a flexible solution for modern USB-C docking and peripheral designs.

Why Choose This Part

The integration of an Arm Cortex-M0 core allows for custom firmware implementation of complex PD policies while maintaining low power consumption of 10mA in active dual-port mode. It simplifies PCB layouts by integrating clocks, oscillators, and system-level ESD protection on the critical CC pins.

Applications

PC and Laptop Docking Stations
Manages dual-port USB-PD negotiation and data switching for multi-functional computer peripherals.
USB-C Power Adapters
Implements intelligent power delivery profiles for high-efficiency chargers and wall warts.
Monitors and Display Dongles
Handles DisplayPort Alt Mode negotiation and power delivery over a single USB-C connection.
Industrial USB Hubs
Provides robust PD management and communication interfaces for ruggedized industrial connectivity.

Key Specifications

RAM Size 8K x 8
Interface I2C, SPI, UART/USART, USB
Applications USB Type C
Mounting Type Surface Mount
Number of I/O 14
Core Processor ARM Cortex-M0
Package / Case 40-UFQFN Exposed Pad
Voltage - Supply 2.7V ~ 5.5V
Program Memory Type FLASH (128kB)
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 40-QFN (6x6)

Getting Started

Engineers can develop firmware using the PSoC Creator IDE or ModusToolbox, leveraging Infineon's extensive USB-PD software stack. Hardware prototyping is best started with the CY4500 EZ-PD Protocol Analyzer for bus monitoring and the CCG4 evaluation kits for rapid peripheral integration.

CYPD4126-40 Family

Also available as: CYPD4126-40LQXI

Also Consider

TPS25750 TITexas Instruments - A standalone PD controller that offers simplified configuration for USB-C applications without requiring custom MCU code.