BLL2740 Power Management IC – 3.5A Jitter + CC/CV DC/DC Buck Converter | 8.5–42V, Adjustable Output, 135kHz, SOP8

The BLL2740 is a high-performance Power Management IC integrating a built-in MOSFET synchronous DC/DC step-down (buck) converter with Jitter + CC/CV control.
It supports an 8.5V to 42V input voltage range and provides an adjustable output voltage via a 1V feedback reference, making it ideal for automotive car chargers and high-voltage DC/DC applications.

Capable of delivering up to 3.5A output current, the BLL2740 achieves 95% efficiency and 100% maximum duty cycle, ensuring stable and reliable voltage regulation under varying loads.
Its compact SOP8 package allows for space-efficient integration in automotive designs.

Key Specifications

• Input Voltage (VIN): 8.5V – 42V

• 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

• Embedded automotive electronics

• Portable high-voltage devices

• Battery-powered automotive systems

Features

• Adjustable output voltage with 1V feedback reference

• Jitter + CC/CV control for stable voltage and 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