BLL2452S Power Management IC – 2.5A Synchronous COT Buck Converter | 4.2–16V, Low IQ

The BLL2452S is a high-efficiency Power Management IC featuring a synchronous constant-on-time (COT) DC/DC step-down (buck) converter with integrated MOSFETs, designed for wide input voltage applications requiring low quiescent current and efficient power regulation.
It supports a 4.2V to 16V input voltage range and provides an adjustable output voltage, making it ideal for portable, battery-powered, and embedded systems.

Delivering up to 2.5A output current, the BLL2452S ensures stable regulation and high efficiency across light and heavy loads.
Its low quiescent current makes it suitable for energy-sensitive applications.

Key Specifications

• Input Voltage (VIN): 4.2V – 16V

• Output Voltage (VOUT): Adjustable

• Output Current (IOUT): Up to 2.5A

• Topology: Synchronous COT Buck Converter

• Power Switching: Built-in MOSFETs

• Control Mode: Constant-On-Time (COT)

• Quiescent Current (IQ): Low

• Package: SOT23-6 / SOT563

Applications

• Portable and battery-powered devices

• Consumer electronics

• Embedded systems

• Industrial electronics

• Point-of-load DC/DC conversion

• Energy-sensitive applications

Features

• Low quiescent current for energy-efficient operation

• Synchronous COT architecture for fast transient response

• Integrated MOSFETs for compact design

• Wide 4.2–16V input voltage range

• Stable output regulation

• Small SOT23-6 / SOT563 packages for high-density designs