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AP3428WT Datasheet
DFX File
Step file

1A Step-Down DC-DC Buck Converter Module with AP3428WT, High-Efficiency Synchronous Voltage Regulation
The 7Semi AP3428WT 1 A Step-Down DC-DC Buck Converter Module is a compact and efficient power management solution designed to convert higher DC input voltages into stable lower output voltages. Based on the AP3428WT synchronous buck converter IC, the module delivers high conversion efficiency, excellent thermal performance, and reliable voltage regulation for modern embedded systems. Its synchronous switching architecture reduces power loss and heat generation compared to conventional buck converter designs, making it ideal for battery-powered and energy-efficient applications.
The module is well-suited for powering microcontrollers, sensors, wireless communication modules, development boards, and other sensitive digital and analog circuits. With fast transient response, stable output regulation, and support for a wide input voltage range, it integrates easily into IoT devices, industrial automation systems, portable electronics, robotics, and custom embedded projects.
Key Features

AP3428WT Buck Converter: Based on the AP3428WT synchronous DC-DC step-down converter IC.
1 A Output Capability: Supports output currents up to 1 A.
Synchronous Buck Architecture: Provides higher efficiency and improved thermal performance.
High Conversion Efficiency: Minimises power loss and reduces heat generation.
Stable Output Voltage: Delivers clean and reliable power for sensitive electronic circuits.
Wide Input Voltage Support: Compatible with various DC power supplies and battery systems.
Fast Transient Response: Maintains stable output during rapid load changes.
Compact Module Design: Small PCB footprint for embedded and portable applications.
Easy Integration: Suitable for development boards, microcontrollers, and custom electronics.
Reliable Power Regulation: Ideal for continuous operation in embedded and industrial systems.

Applications

Embedded systems
IoT devices
Battery-powered electronics
Arduino and ESP32 projects
STM32 development boards
Raspberry Pi power regulation
Wireless communication modules
Industrial automation
Robotics
Sensor power supplies
Portable electronic devices