LBK0504

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

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.

Technical Documents

LTG Family Datasheet

Datasheet

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LTG Family Whitepaper

Manual

Technical Documents

LTG Family Datasheet

Product Brief

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Applications

Hearing Aids
High-efficiency boost maximizes energy extraction from tiny cells, while ultra-low quiescent current extends overall battery life and maintains clean audio power.
IoT Sensors
Boost enables operation from low/depleting sources, and very low standby power supports long-life or energy-harvested sensing.
Wearables
Boost maintains a stable rail as batteries sag, and high efficiency reduces losses in compact, always-on designs.
Single-/double-cell PV Systems
Boost lifts low, variable PV voltages to a usable level, and low-power operation enables continuous energy-harvested functionality.
Smart Insulin Pens
Boost preserves stable performance as coin cells age, and ultra-low IQ supports multi-year, reliable sensing and dosing.

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

Evaluation Board User Guide 100 mA Miniaturized Boost Converter

The LMU20P1-EVB is a fully assembled and tested printed circuit board that demonstrates the LMU20P1 miniaturized step-up Power Supply in Package (PSiP). The LMU20P1 itself, offers small size, high efficiency and includes an integrated circuit and an inductor in a compact 2 mm x 2 mm x 0.75 mm package.

Lotus Microsystems LMU test printed circuit board

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