BLL2731 Power Management IC – 3.5A Jitter + CC/CV DC/DC Buck Converter | 8.5–34V, Adjustable Output, 135kHz, SOP8

The BLL2731 is a high-performance Power Management IC featuring a built-in MOSFET synchronous DC/DC step-down (buck) converter with Jitter + CC/CV control.
It supports an 8.5V to 34V input voltage range and provides an adjustable output voltage via a 1V feedback reference, making it ideal for automotive car chargers and other high-voltage DC/DC applications.

Delivering up to 3.5A output current, the BLL2731 achieves 95% efficiency and supports 100% maximum duty cycle, ensuring stable performance under varying load conditions.
Its compact SOP8 package allows for easy integration in automotive power designs.

Key Specifications

• Input Voltage (VIN): 8.5V – 34V

• Output Voltage (VOUT): Adjustable (VFB = 1V)

• Output Current (IOUT): Up to 3.5A

• Switching Frequency (FOSC): 135kHz

• Topology: Jitter + CC/CV Synchronous Buck Converter

• Power Switching: Built-in MOSFETs

• Efficiency: Up to 95%

• Max Duty Cycle: 100%

• Output Accuracy: ±2%

• Package: SOP8

Applications

• Automotive car chargers

• DC/DC automotive power modules

• Portable automotive devices

• Embedded power systems

• Battery-powered automotive electronics

Features

• Adjustable output voltage with 1V feedback reference

• Jitter + CC/CV control for reliable voltage/current regulation

• High-current output up to 3.5A

• Integrated MOSFETs for compact design

• High efficiency up to 95%

• SOP8 package for automotive PCB integration