BLL2453 Power Management IC – 3A Synchronous COT DC/DC Buck Converter | 4.2–16V, SOT563 / SOT23-6

The BLL2453 is a high-efficiency Power Management IC integrating a synchronous constant-on-time (COT) DC/DC step-down (buck) converter with built-in MOSFETs, designed for wide input voltage applications requiring compact and high-current solutions.
It supports a 4.2V to 16V input voltage range and provides an adjustable output voltage, making it suitable for consumer, industrial, and embedded systems.

Capable of delivering up to 3A output current, the BLL2453 ensures stable regulation and high efficiency across varying loads.
Its compact SOT563 / SOT23-6 packages enable high-density designs in space-constrained applications.

Key Specifications

• Input Voltage (VIN): 4.2V – 16V

• Output Voltage (VOUT): Adjustable

• Output Current (IOUT): Up to 3A

• Topology: Synchronous COT Buck Converter

• Power Switching: Built-in MOSFETs

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

• Package: SOT563 / SOT23-6

Applications

• Consumer electronics

• Portable and battery-powered devices

• Embedded systems

• Industrial electronics

• Point-of-load regulation

• Space-constrained DC/DC applications

Features

• Synchronous COT architecture for fast transient response

• Supports up to 3A output current

• Integrated MOSFETs for compact design

• Wide 4.2–16V input voltage range

• High efficiency across light and heavy loads

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