BLL2311C Power Management IC – 2A Forced-PWM Buck Converter | 4.5–18V, MP1470B Compatible

The BLL2311C is a high-efficiency Power Management IC featuring a forced-PWM synchronous DC/DC step-down (buck) converter with integrated MOSFETs, designed for wide input voltage applications requiring constant switching frequency and reliable voltage regulation.
It supports a 4.5V to 18V input voltage range and provides an adjustable output voltage, making it suitable for consumer, industrial, and embedded systems.

Capable of delivering up to 2A output current, the BLL2311C provides precise regulation under varying loads, making it ideal for applications where constant-frequency operation is critical.
It is MP1470B-compatible, allowing seamless replacement or design migration in existing circuits.

Key Specifications

• Input Voltage (VIN): 4.5V – 18V

• Output Voltage (VOUT): Adjustable

• Output Current (IOUT): Up to 2A

• Topology: Forced-PWM Synchronous Buck Converter

• Power Switching: Built-in MOSFETs

• Control Mode: Forced-PWM

• Compatibility: MP1470B

• Package: SOT23-6 / ESOP8

Applications

• Consumer electronics

• Set-top boxes (STB)

• Embedded systems

• Industrial electronics

• Point-of-load regulation

• Constant-frequency DC/DC power rails

Features

• MP1470B compatible solution

• Wide 4.5–18V input voltage range

• Integrated synchronous MOSFETs

• Forced-PWM mode ensures constant switching frequency

• Stable output regulation under dynamic loads

• Compact SOT23-6 / ESOP8 packages for high-density designs