MP3398AGY LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3398AGY is an active LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device functions as a 4-output DC DC controller with Step-Up (Boost) topology, designed for LED backlight applications. The part operates with a supply voltage range of 5V to 28V and delivers 350mA per output channel at 540kHz switching frequency. The MP3398AGY is currently in active product status with 1090 units available in new original inventory. Alternative components may be required due to inventory constraints, application-specific voltage requirements, or design optimization needs.

Substiute Parts

MP3398AGY

Monolithic Power Systems Inc.In Stock: 1147MP3398AGY Datasheet

Current PartRFQ

LP8860DQVFPRQ1

Texas InstrumentsIn Stock: 108182LP8860DQVFPRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LP8860DQVFPRQ1 qualifies as a functional substitute for the MP3398AGY based on the following core electrical and mechanical parameters:

Matching Criteria:

• Both devices function as 4-output DC DC controllers with Step-Up (Boost) topology
• Both support PWM dimming control for LED applications
• Both operate across overlapping supply voltage ranges (MP3398AGY: 5V–28V; LP8860DQVFPRQ1: 3V–48V)
• Both are designed for LED backlight and lighting applications
• Both comply with ROHS3 and REACH standards
• Both are surface-mount components in active product status

Functional Differences:

• LP8860DQVFPRQ1 offers higher maximum output current (150mA per channel vs. 350mA) and wider frequency range (100kHz–2.2MHz vs. fixed 540kHz)
• LP8860DQVFPRQ1 includes automotive-grade qualification (AEC-Q100) and operates at lower minimum supply voltage (3V vs. 5V)
• Package differs: LP8860DQVFPRQ1 uses 32-HLQFP (7x7) versus MP3398AGY's 20-SOIC

Parameter Comparison

Engineering Selection Recommendations

MP3398AGY Selection: Select the MP3398AGY when designs require 350mA per-channel output current capacity and fixed 540kHz switching frequency operation. This component is suitable for standard backlight applications with supply voltages between 5V and 28V. The 20-SOIC package provides compact board integration for space-constrained layouts.

LP8860DQVFPRQ1 Selection: Select the LP8860DQVFPRQ1 when designs require automotive-grade qualification (AEC-Q100) or extended supply voltage range (3V–48V). This substitute is appropriate for applications requiring lower minimum input voltage or higher maximum output voltage. The 32-HLQFP package accommodates designs where additional pin count and thermal performance are beneficial. Note that per-channel output current is limited to 150mA, which may not satisfy designs requiring the full 350mA capacity of the MP3398AGY.

Both components maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the LP8860DQVFPRQ1 directly replace the MP3398AGY in existing designs?

A: Direct replacement requires design verification. While both devices share 4-output DC DC controller topology with Step-Up configuration, the LP8860DQVFPRQ1 has lower per-channel current capacity (150mA vs. 350mA) and uses a different package (32-HLQFP vs. 20-SOIC). PCB layout and firmware modifications may be necessary.

Q: What are the key electrical differences between these parts?

A: The MP3398AGY operates with fixed 540kHz switching frequency and supports both analog and PWM dimming. The LP8860DQVFPRQ1 offers programmable frequency (100kHz–2.2MHz) and PWM-only dimming. Supply voltage ranges differ: MP3398AGY requires minimum 5V input, while LP8860DQVFPRQ1 operates from 3V minimum.

Q: Are package differences significant for substitution?

A: Yes. The MP3398AGY uses 20-SOIC (0.295" width) while the LP8860DQVFPRQ1 uses 32-HLQFP (7x7). These packages have different pin counts, footprints, and thermal characteristics. PCB redesign is required for substitution.

Q: Does the LP8860DQVFPRQ1 automotive qualification affect non-automotive applications?

A: No. AEC-Q100 qualification indicates enhanced reliability testing and is applicable to automotive designs. Non-automotive applications may use this part without qualification concerns, though it represents a higher-grade component.

Q: What compliance certifications apply to both parts?

A: Both the MP3398AGY and LP8860DQVFPRQ1 are ROHS3 compliant and REACH unaffected. Both carry EAR99 export classification and HTSUS code 8542.39.0001.