MP3309AGQ-Z

LED Driver IC Overview

The MP3309AGQ-Z is a synchronous boost DC-DC regulator designed for driving white LED arrays. It features an integrated 1.8A switch and supports analog and PWM dimming. The device operates from a 2.7V to 5.5V supply, delivering up to 35V output voltage at a fixed 640kHz switching frequency. It is housed in a compact 10-QFN (3x3mm) package with an operating temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates a high-efficiency synchronous boost converter with a 1.8A internal power switch
• Supports both analog and pulse-width modulation (PWM) dimming methods for brightness control
• Operates over a wide input voltage range suitable for single-cell lithium-ion battery applications

LED Driver IC Applications

• White LED backlighting for LCD panels
• Mobile phone displays
• Portable electronic devices requiring efficient LED drive solutions

LED Driver IC Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and halogen-free status as per Monolithic Power Systems documentation. Confirm the QFN-10 package dimensions match your PCB footprint requirements. Ensure the design accounts for the 640kHz fixed switching frequency when selecting external inductors and capacitors for optimal performance and EMI management.

LED Driver IC Selection Notes

Select this component for applications requiring a single-channel boost driver with high current capability. The integrated switch eliminates the need for external power MOSFETs, simplifying the bill of materials. Consider the thermal performance of the QFN-10 package under maximum load conditions. Verify that the required dimming interface aligns with either analog voltage control or digital PWM signals.

LED Driver IC Part Context

This part belongs to the MP3309 family of LED drivers from Monolithic Power Systems. It is specifically engineered for portable electronics where space and efficiency are critical constraints. The synchronous topology improves overall system efficiency compared to non-synchronous alternatives, extending battery life in mobile devices.

LED Driver IC Replacement Considerations

Direct pin-to-pin replacements within the same MPS family should be verified against official substitution guides. Cross-referencing with other MPS WLED drivers requires checking output current ratings and package compatibility.