MP1528DK-LF

LED Driver IC Overview

The MP1528DK-LF is a boost converter IC designed for driving up to nine series-connected white LEDs from a single lithium-ion cell. It operates with an input voltage range of 2.7V to 36V and provides a regulated output current of 20mA. The device features an integrated 0.63Ω power MOSFET and utilizes a low 0.4V full-scale current sense threshold for precise regulation. It supports both analog and digital PWM brightness control, includes open-load protection, and is housed in an 8-pin MSOP package.

LED Driver IC Feature Summary

• Integrated 0.63Ω power MOSFET for high efficiency
• Supports analog and digital PWM brightness control
• Open-load protection prevents device damage
• Low 0.4V full-scale current sense threshold

LED Driver IC Applications

• Single-cell lithium-ion battery powered LED lighting
• Portable electronic device backlighting
• Flashlight and camera module illumination

LED Driver IC Procurement Notes

Verify the specific suffix 'LF' indicates lead-free compliance and 'DK' denotes the 8-pin MSOP package variant. Confirm that the component matches the required thermal performance for your application environment. Ensure compatibility with the intended PCB footprint for the MSOP-8 package before finalizing procurement decisions.

LED Driver IC Selection Notes

Select this model when driving multiple series white LEDs from a single cell source. The integrated MOSFET reduces external component count compared to discrete solutions. Consider the 20mA output limit and 36V maximum input voltage constraints. The MSOP-8 package offers a compact form factor suitable for space-constrained portable designs requiring precise current regulation.

LED Driver IC Part Context

This component belongs to the MP1528 family of LED drivers manufactured by Monolithic Power Systems. It is specifically engineered as a step-up converter for white LED applications. The DK suffix identifies the 8-pin MSOP package version, distinct from other variants like the DQ (QFN-6) or DG (QFN-8) packages within the same functional family.

LED Driver IC Replacement Considerations

Compatible substitutes include MP1528DQ-LF-P and MP1528DG-LF-Z. Note that these alternatives differ in package type (QFN-6 and QFN-8 respectively) while maintaining similar electrical characteristics. Verify pinout compatibility and thermal dissipation requirements when substituting between package styles.