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Small rectangular USB to I2C converter module in black ABS housing with USB connector visible

NDNCZDHC

NDNCZDHC USB to I2C Converter Module 5V 3.3V 500mA

SKU CH-H9SK-TB31T

A USB-to-I²C module powers target circuits at 3.3 V or 5 V up to 500 mA and enables bidirectional host or slave communication without an external supply

  • USB-powered with 5V and 3.3V outputs up to 500mA
  • Bidirectional I2C host or slave operation for flexible integration
  • circuit protection safeguards connected devices
  • ABS housing resists impact and scratches
  • Built-in IIC function library simplifies development

USB to I2C Converter Module

This module converts a USB port into an I2C bus interface for development and testing. It operates as either a host or slave device to enable bidirectional data transfer. The adapter draws power directly from USB so no external supply is needed. It suits engineers and hobbyists working with I2C peripherals.

Thermals noise and power draw

The board is powered entirely from the USB connection and provides regulated 5V and 3.3V outputs up to 500mA. Short-circuit protection limits current during faults. No active cooling is required and the device runs silently. Power consumption scales with the attached I2C load.

Voltage and current limits

The converter supplies two fixed rails at 5V and 3.3V with a combined current limit of 500mA. This ceiling determines how many downstream devices can be powered simultaneously. Builders needing higher current for sensor arrays or displays must add an external regulator.

Highlights

  • USB-powered with 5V and 3.3V outputs up to 500mA
  • Bidirectional I2C host or slave operation for flexible integration
  • circuit protection safeguards connected devices
  • ABS housing resists impact and scratches
  • Built-in IIC function library simplifies development

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect this USB to I2C converter and what wiring mistake should I avoid?

Plug the module into a USB port; it draws power directly from USB so no external supply is needed. The common error is reversing the SDA and SCL lines on the I²C header, which stops communication until the pins are swapped back.

What part of this converter is most likely to need replacement after extended use?

The onboard short-circuit protection is the only wear-sensitive element; if a downstream fault trips it repeatedly the protection circuit can degrade and the whole module would need replacing.

At what current draw does the 5 V or 3.3 V output hit its limit during continuous operation?

Both the 5 V and 3.3 V rails are rated for a maximum of 500 mA; sustained loads above that level will trigger the short-circuit protection and shut the outputs down.

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