FAN3111ESX onsemi / Fairchild

Here is the English information on the FAN3111ESX chip:

The FAN3111ESX is a single-channel synchronous step-down DC-DC converter from Texas Instruments.

Key Specifications:

• Input voltage range: 4.5V to 18V
• Output voltage: 0.6V to 5.5V
• Maximum output current: 3A
• Switching frequency: Up to 2MHz
• I2C digital interface for control/monitoring
• Overvoltage, overcurrent and thermal protections
• Available in 5mm x 5mm DFN package

This single-channel digital regulator controls the output voltage via an I2C interface.

It integrates high-side and low-side MOSFETs to enable efficient conversion with minimal external components.

Onboard protections ensure safe operation under fault conditions.

The I2C interface allows remote configuration and fault reporting to a microcontroller.

Well-suited for distributed power applications in industrial equipment, medical devices and computing platforms.

The compact DFN package maximizes board space efficiency.

In summary, the FAN3111ESX provides an easy-to-use digitally controlled buck converter in a small footprint.