Miniaturized 4A Buck Converter

Product Details

Description

Features

Parameters

Product in development: Please contact us for early access or more information.

The LBK0504 is a miniaturized step-down converter featuring small size and high efficiency. The power module integrates the power management integrated circuit (PMIC) and the inductor in a compact 2.0 mm x 2.5 mm x 1.1 mm package. The package is optimized for automated assembly by standard surface-mount pick-and-place equipment.

The LBK0504 also features an I²C interface which can be used to configure the protection circuits, soft-start circuit, I²C address, and timeout. The protection circuits include input under-voltage lockout (UVLO), over-temperature protection (OTP), output over-voltage and under-voltage protection (OVP and UVP), and cycle-by-cycle current limit.

The device can be used in parallel to multiply the output current (up to 4 phases in parallel). The LBK0504 features ultra low-noise performance, making it a primary candidate for low-noise applications.

Applications

Optical Transceivers & Modules

Ultra-low-noise power delivery maximizes optical signal integrity, enabling cleaner modulation, tighter eye diagrams, and higher data rates.

Computing Point-of-Load Power

Exceptionally low output ripple ensures stable, quiet rails for sensitive CPUs, ASICs, and FPGAs –⁠⁠⁠⁠⁠⁠ ideal for high-precision digital systems.

5G Small Cells & Telecom

Ultra-low-noise regulation minimizes interference with RF front ends, boosting radio performance in compact, high-density designs.

Medical Devices & Instrumentation

Provides ultra-clean, low-flicker power crucial for precision sensing, imaging, and diagnostic accuracy in medical electronics.

General Low-Noise DC-DC Conversion

Combines a miniature SiP with premium noise performance to deliver one of the quietest power rails available in its class.

Evaluation Board

The LBK0504 evaluation board provides a streamlined platform for device characterization, providing dedicated test points the different signals. The output voltage is adjustable via a user-replaceable feedback resistor, and includes an SMB connector for synchronization to an external clock source.
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The board also integrates a microcontroller on the bottom layer to manage register configurations and interface directly with the LMS PRISM Console.

LBK0504

Product in development: The LBK0504 is a miniaturized step-down converter featuring small size and high efficiency.

Datasheet

Product Details

Technical Documents

Product Brief

Applications

Evaluation Board

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