BLL2783 Power Management IC – 3A Synchronous High-Side Buck Converter | 7–70V, Adjustable 3–40V, 150kHz, SOP8

The BLL2783 is a high-performance Power Management IC integrating a built-in high-side MOSFET synchronous DC/DC step-down (buck) converter with PWM/PFM control.
It supports a wide 7V to 70V input voltage range and provides an adjustable output voltage from 3V to 40V using a 1V feedback reference, making it well suited for DPS, PoE, and industrial power applications.

With a maximum 3A output current, the BLL2783 delivers high efficiency of up to 94%, ensuring stable and reliable operation across a wide load range.
Its SOP8 package enables compact, cost-effective designs for industrial and high-voltage systems.

Key Specifications

• Input Voltage (VIN): 7V – 70V

• Output Voltage (VOUT): Adjustable (3–40V, VFB = 1V)

• Output Current (IOUT): Up to 3A

• Switching Frequency (FOSC): 150kHz

• Topology: Synchronous High-Side Buck Converter

• Power Switching: Built-in MOSFET

• Control Mode: PWM / PFM

• Efficiency: Up to 94%

• Max Duty Cycle: 91%

• Output Accuracy: ±2%

• Package: SOP8

Applications

• DPS (Digital Power Supply)

• PoE (Power over Ethernet)

• Industrial control systems

• Embedded DC/DC converters

• High-voltage battery-powered equipment

Features

• Built-in high-side MOSFET for simplified design

• Adjustable output voltage up to 40V

• PWM/PFM operation for optimized efficiency

• Wide 7–70V input voltage support

• High efficiency up to 94%

• SOP8 package for compact industrial designs