MP1518DJE-LF-Z

LED Driver IC Overview

The MP1518DJE-LF-Z is a boost DC-DC converter IC designed for driving up to six series-connected white LEDs from a single-cell lithium-ion battery. It operates within an input voltage range of 2.5 V to 6 V and delivers a switch current of 350 mA. The device features a fixed switching frequency of 1.3 MHz and supports PWM dimming. It utilizes a low feedback voltage of 104 mV to enhance efficiency. The component includes integrated power MOSFETs, open LED protection, and thermal overload protection. It is housed in a TSOT-23-6 package and functions across a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates power MOSFETs to drive multiple series white LEDs without external switches
• Supports PWM dimming for precise brightness control
• Includes open LED protection that shuts down the converter during overvoltage conditions
• Features low feedback voltage architecture to minimize power loss and improve efficiency

LED Driver IC Applications

• Portable electronic devices requiring backlighting
• Battery-powered LED lighting systems
• Mobile phone display backlights
• Handheld instrument illumination

LED Driver IC Procurement Notes

Verify the specific suffix JE against official Monolithic Power Systems documentation to confirm the TSOT-23-6 package type and lead-free status. Ensure compatibility with system EMI requirements due to the 1.3 MHz switching frequency. Cross-reference the part number with authorized distributors to confirm availability and authenticity, as supply chain data varies by region.

LED Driver IC Selection Notes

Select this component when board space is limited and high efficiency is required for single-cell lithium-ion applications. The TSOT-23-6 package suits compact designs. Consider the 350 mA output capability and 1.3 MHz frequency for EMI management. Verify that the load requires up to six series LEDs within the specified voltage range.

LED Driver IC Part Context

This part belongs to the MP1518 family of LED drivers from Monolithic Power Systems. The family offers various packages including QFN and TSOT variants. The MP1518 series is engineered for portable applications, providing a cost-effective solution for white LED backlighting with integrated protection features and high efficiency.

LED Driver IC Replacement Considerations

Compatible substitutes include MP1518DJ-LF-Z and MP1518DG-LF-Z. Verify pinout and package dimensions before substitution. Ensure electrical parameters such as switch current and operating frequency match the original design requirements.