BLL2742 Power Management IC – 5.5A Jitter + CC/CV DC/DC Buck Converter | 8.5–42V, 5.05V Output, 130kHz, SOP8

The BLL2742 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 42V input voltage range and provides a fixed 5.05V output, making it ideal for automotive car chargers and high-voltage automotive applications.

Capable of delivering up to 5.5A output current, the BLL2742 achieves 96% efficiency, providing reliable and stable voltage regulation under varying loads.
Its SOP8 package enables space-efficient PCB integration in automotive power designs.

Key Specifications

• Input Voltage (VIN): 8.5V – 42V

• Output Voltage (VOUT): 5.05V fixed

• Output Current (IOUT): Up to 5.5A

• Switching Frequency (FOSC): 130kHz

• Topology: Jitter + CC/CV Synchronous Buck Converter

• Power Switching: Built-in MOSFETs

• Efficiency: Up to 96%

• Output Accuracy: ±2%

• Package: SOP8

Applications

• Automotive car chargers

• DC/DC automotive power modules

• Embedded automotive electronics

• Battery-powered automotive systems

• High-current automotive devices

Features

• High-current output up to 5.5A

• Fixed 5.05V output for automotive applications

• Jitter + CC/CV control for stable voltage and current regulation

• Integrated MOSFETs for compact design

• High efficiency up to 96%

• SOP8 package for automotive PCB integration