MP3398AGF-Z

Overview

The MP3398AGF-Z is a four-channel boost white LED controller from Monolithic Power Systems, designed for LCD panel backlighting. It operates within an input voltage range of 5V to 28V and delivers up to 350mA per channel. The device utilizes peak current mode control with a fixed switching frequency of 540kHz, which can be adjusted via external resistors. Packaged in a 16-TSSOP-EP format, it supports independent PWM and analog dimming. Key electrical features include 2.5% current matching accuracy between strings and low regulation voltage on current sources to minimize power loss.

Feature Summary

• Supports independent PWM and analog dimming modes for flexible brightness control
• Provides comprehensive protection including OCP, OTP, UVP, OVP, and LED open/short circuit detection
• Features cascading capability allowing multiple ICs to share a single power supply for expanded channels

Applications

• Large LCD panel backlight systems
• Television display modules
• Computer monitor backlighting

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and lead-free status as per manufacturer standards. Confirm the 16-TSSOP-EP package variant matches design requirements. Check humidity sensitivity level (MSL 2A) for storage and handling protocols. Ensure external component selection aligns with the 540kHz fixed frequency operation.

Selection Notes

Select this component for applications requiring four independent LED channels with high current matching precision. It is suitable for designs needing both analog and PWM dimming capabilities without complex external logic. Consider the thermal performance of the exposed pad package for heat dissipation. Verify that the input voltage range covers the system's operational requirements.

Part Context

This part belongs to the MP3398A series of WLED controllers. It shares core functionality with variants like MP3398AGF-P but differs in packaging or environmental compliance specifications. The series is engineered for high-efficiency boost conversion in portable and stationary display devices.

Replacement Considerations

Direct substitutes include MP3398AGF-P and MP3398AGS-Z. Verify pinout compatibility and package dimensions before substitution. Ensure replacement parts meet the same electrical specifications for current and voltage ratings.