MP1528DQ-LF-P

LED Driver IC Overview

The MP1528DQ-LF-P is a boost converter IC designed for driving up to nine series-connected white LEDs from a single lithium-ion cell. It operates within an input voltage range of 2.7V to 36V and delivers an output current of 20mA. The device utilizes a current-limiting and variable frequency architecture to maintain high efficiency while regulating LED current. Key electrical features include a full-scale current sampling threshold as low as 0.4V and an integrated power switch with an on-resistance of 0.63Ω. It supports both analog and digital PWM brightness control and includes protection mechanisms such as open-load shutdown, soft start, internal current limiting, UVLO, and over-temperature shutdown.

LED Driver IC Feature Summary

• Integrates a 0.63Ω power MOSFET for minimized power consumption
• Supports analog and digital PWM brightness control methods
• Includes open-load shutdown to prevent device damage during fault conditions

LED Driver IC Applications

• Single-cell lithium-ion battery powered LED lighting systems
• Portable electronic devices requiring high-efficiency backlighting
• Handheld consumer electronics with white LED arrays

LED Driver IC Procurement Notes

Verify the specific suffix DQ indicates the QFN-6 package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the ordering part number matches the required pinout and thermal pad specifications for your PCB layout design.

LED Driver IC Selection Notes

Select this component for applications requiring a compact solution to drive multiple series LEDs from a single cell. The low current sampling threshold allows for efficient operation with small sense resistors. Consider the QFN-6 package size constraints and thermal dissipation requirements relative to the maximum output current and ambient operating temperature limits.

LED Driver IC Part Context

This part belongs to the MP1528 series of LED drivers manufactured by Monolithic Power Systems. The series offers various package options including MSOP-8 and QFN variants. The MP1528DQ-LF-P specifically denotes the lead-free version in the 6-pin QFN package, distinguishing it from other pin-compatible or functionally similar parts in the broader product line.

LED Driver IC Replacement Considerations

Direct substitutes within the same family include MP1528DQ-LF-Z and MP1528DK-LF-P. Verify package compatibility and pin assignments before replacing. Cross-referencing with other boost LED drivers requires careful evaluation of input voltage ranges and current capabilities.