MP3398EGP LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3398EGP is a 4-output LED driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a DC DC controller with Step-Up (Boost) topology, delivering 400mA per channel output current with analog and PWM dimming capabilities. The part is currently in Active product status and is supplied in 16-PDIP through-hole packaging.

Equivalent and substitute parts are identified based on matching functional topology, output channel configuration, dimming control methods, and electrical operating ranges. Substitutes enable design flexibility when the primary part is unavailable or when alternative packaging or performance characteristics better suit specific application requirements.

Substiute Parts

MP3398EGP

Monolithic Power Systems Inc.In Stock: 3207MP3398EGP Datasheet

Current PartRFQ

BD6066GU-E2

ROHM SemiconductorIn Stock: 1774BD6066GU-E2 Datasheet

MFR RecommendedRFQ

ISL97687IBZ

Renesas Electronics CorporationIn Stock: 3782ISL97687IBZ Datasheet

MFR RecommendedRFQ

LP8860DQVFPRQ1

Texas InstrumentsIn Stock: 108182LP8860DQVFPRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP3398EGP are qualified based on the following core substitution criteria:

Functional Requirements:

• 4-output LED driver IC architecture
• Step-Up (Boost) DC DC topology
• PWM and/or Analog dimming control capability
• Backlight application suitability

Electrical Compatibility Ranges:

• Supply voltage overlap with 4.5V to 33V input range
• Output current capability of 150mA or greater per channel
• Operating temperature range encompassing or overlapping -40°C to 125°C

Compliance & Status:

• ROHS3 compliance maintained
• Active or equivalent product status for new designs

Three substitute parts meet these criteria with varying trade-offs in packaging, current capacity, and frequency characteristics.

Parameter Comparison

Engineering Selection Recommendations

ISL97687IBZ (Renesas Electronics Corporation)

The ISL97687IBZ is an Active product suitable for new designs. It maintains the 4-output Step-Up topology and supports both analog and PWM dimming control, matching the primary control interface of the MP3398EGP. The 160mA per-channel output current is lower than the MP3398EGP but sufficient for many backlight applications. Operating temperature range extends to 105°C, and the device is ROHS3 compliant. The 28-SOIC surface-mount package requires PCB layout modification from the through-hole 16-DIP format.

LP8860DQVFPRQ1 (Texas Instruments)

The LP8860DQVFPRQ1 is an Active product with AEC-Q100 automotive qualification, making it suitable for automotive backlight and lighting applications. It supports the widest supply voltage range (3V to 48V) and maintains 4-output Step-Up topology with PWM dimming. The 150mA per-channel output current is lower than the MP3398EGP. Operating temperature range matches the primary part at -40°C to 125°C. The 32-PowerLQFP surface-mount package requires PCB redesign.

BD6066GU-E2 (ROHM Semiconductor)

The BD6066GU-E2 is marked as Not For New Designs and should not be selected for new product development. Although it maintains 4-output Step-Up topology with PWM dimming, the 30mA per-channel output current is significantly lower than the MP3398EGP, and the maximum operating temperature is limited to 85°C. This part is suitable only for legacy design maintenance or replacement scenarios where existing inventory must be utilized.

Frequently Asked Questions (FAQ)

Q: Can the BD6066GU-E2 be used as a direct replacement for the MP3398EGP in new designs?

A: No. The BD6066GU-E2 is marked as Not For New Designs by the manufacturer. Additionally, its 30mA per-channel output current is insufficient for applications requiring the MP3398EGP's 400mA capability. This part should be considered only for legacy product support.

Q: What is the primary difference between ISL97687IBZ and LP8860DQVFPRQ1 substitutes?

A: The ISL97687IBZ supports both analog and PWM dimming control, matching the MP3398EGP's control interface flexibility. The LP8860DQVFPRQ1 supports PWM dimming only but includes AEC-Q100 automotive qualification and operates across a wider supply voltage range (3V to 48V). Selection depends on whether analog dimming control is required and whether automotive-grade qualification is necessary.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—ISL97687IBZ, LP8860DQVFPRQ1, and BD6066GU-E2—maintain ROHS3 compliance, matching the environmental compliance status of the MP3398EGP.

Q: What packaging changes occur when substituting from MP3398EGP?

A: The MP3398EGP uses 16-DIP through-hole packaging. All substitute parts use surface-mount packages: BD6066GU-E2 uses 17-VFBGA/CSPBGA, ISL97687IBZ uses 28-SOIC, and LP8860DQVFPRQ1 uses 32-PowerLQFP. PCB layout and assembly process modifications are required for any substitution.

Q: Which substitute part best matches the MP3398EGP's output current capability?

A: None of the substitute parts match the MP3398EGP's 400mA per-channel output current. ISL97687IBZ provides 160mA, LP8860DQVFPRQ1 provides 150mA, and BD6066GU-E2 provides 30mA per channel. Application current requirements must be evaluated against each substitute's capability.

Q: Can ISL97687IBZ and LP8860DQVFPRQ1 be used interchangeably?

A: Both parts maintain 4-output Step-Up topology and are Active products suitable for new designs. However, they differ in dimming control method (ISL97687IBZ supports analog and PWM; LP8860DQVFPRQ1 supports PWM only), supply voltage range, and automotive qualification status. Selection depends on specific application requirements for dimming control and environmental operating conditions.