BLL2749 Power Management IC – 10A Jitter + CC/CV DC/DC Buck Converter | 8.5–40V, Adjustable Output, 135kHz, ESOP8

The BLL2749 is a high-performance Power Management IC featuring an external MOSFET synchronous DC/DC step-down (buck) converter with Jitter + CC/CV control.
It supports an 8.5V to 40V input voltage range and provides an adjustable output voltage via a 1V feedback reference, making it ideal for high-current automotive car chargers and other high-power DC/DC applications.

Capable of delivering up to 10A output current, the BLL2749 achieves 95% efficiency and 100% maximum duty cycle, providing stable voltage regulation under demanding load conditions.
Its ESOP8 package supports robust and compact PCB integration.

Key Specifications

• Input Voltage (VIN): 8.5V – 40V

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

• Output Current (IOUT): Up to 10A

• Switching Frequency (FOSC): 135kHz

• Topology: Jitter + CC/CV Synchronous Buck Converter

• Power Switching: External MOSFETs

• Efficiency: Up to 95%

• Max Duty Cycle: 100%

• Output Accuracy: ±2%

• Package: ESOP8

Applications

• Automotive car chargers

• High-current DC/DC automotive modules

• Embedded automotive electronics

• Battery-powered automotive systems

• High-power automotive devices

Features

• Supports very high output current up to 10A

• Adjustable output voltage via 1V feedback reference

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

• External MOSFET support for high-current applications

• High efficiency up to 95%

• ESOP8 package for compact, high-density PCB layouts