BLL2741 Power Management IC – 4A Jitter + CC/CV DC/DC Buck Converter | 8.0–43V, 5.1V Output, 135kHz, ESOP8

The BLL2741 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 8.0V to 43V input voltage range and provides a fixed 5.1V output, making it ideal for automotive car chargers and other high-voltage automotive DC/DC applications.

Delivering up to 4A output current, the BLL2741 achieves 95% efficiency, providing stable voltage regulation under varying load conditions.
Its compact ESOP8 package allows for high-density PCB integration in automotive power solutions.

Key Specifications

• Input Voltage (VIN): 8.0V – 43V

• Output Voltage (VOUT): 5.1V fixed

• Output Current (IOUT): Up to 4A

• Switching Frequency (FOSC): 135kHz

• Topology: Jitter + CC/CV Synchronous Buck Converter

• Power Switching: Built-in MOSFETs

• Efficiency: Up to 95%

• Output Accuracy: ±2%

• Package: ESOP8

Applications

• Automotive car chargers

• DC/DC automotive power modules

• Embedded automotive electronics

• Battery-powered automotive systems

• Portable high-voltage devices

Features

• Fixed 5.1V output for automotive applications

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

• High-current output up to 4A

• Integrated MOSFETs for compact design

• High efficiency up to 95%

• ESOP8 package for high-density PCB layouts