MP3384EQ-LF-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3384EQ-LF-P is a 4-output LED driver IC with integrated DC-DC step-up (boost) regulator topology, designed for backlight applications. This part is classified as "Not For New Designs," making identification of equivalent and substitute components essential for ongoing production support, legacy system maintenance, and design flexibility.

The MP3384EQ-LF-P operates across a 4.5V to 25V supply range with 40mA per-channel output current capability and PWM dimming control at 1.25MHz switching frequency. The 16-QFN (3x3) package provides a compact surface-mount solution with exposed pad thermal management.

Substiute Parts

MP3384EQ-LF-P

Monolithic Power Systems Inc.In Stock: 1019MP3384EQ-LF-P Datasheet

Current PartRFQ

MP3384EQ-LF-Z

Monolithic Power Systems Inc.In Stock: 3303MP3384EQ-LF-Z Datasheet

Parametric EquivalentRFQ

A8519KETTR-R

Allegro MicroSystemsIn Stock: 8226A8519KETTR-R Datasheet

MFR RecommendedRFQ

ADD5207ACPZ-RL

Analog Devices Inc.In Stock: 28091ADD5207ACPZ-RL Datasheet

MFR RecommendedRFQ

LT3599IFE#PBF

Analog Devices Inc.In Stock: 27339LT3599IFE#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP3384EQ-LF-P are classified based on electrical and mechanical compatibility within the following criteria:

Parametric Equivalents share identical or near-identical electrical specifications: 4-output topology, step-up boost configuration, 4.5V to 25V supply range, 40mA per-channel output, PWM dimming at 1.25MHz, and 16-QFN (3x3) package form factor.

Manufacturer-Recommended Alternatives provide functional equivalence with relaxed constraints in one or more parameters (higher output current, extended supply voltage range, additional dimming modes, or different package sizes) while maintaining the core 4-output LED driver boost regulator architecture and backlight application suitability.

The following parameters determine substitution eligibility:

• Number of outputs (must be 4)
• Topology (must be step-up/boost)
• Dimming capability (PWM minimum; analog+PWM acceptable)
• Supply voltage range (minimum 4.5V; maximum ≥25V acceptable)
• Output voltage capability (≥50V acceptable)
• Current per channel (≥40mA acceptable)
• Mounting type (surface mount required)
• Operating temperature range (-40°C to 125°C minimum)

Parameter Comparison

Engineering Selection Recommendations

MP3384EQ-LF-Z (Monolithic Power Systems Inc.) is the direct parametric equivalent. Identical electrical specifications and package form factor enable drop-in replacement. Both parts carry "Not For New Designs" status; however, MP3384EQ-LF-Z maintains higher inventory availability (3198 pcs vs. 977 pcs). Selection is appropriate for legacy production continuity and pin-compatible board layouts.

A8519KETTR-R (Allegro MicroSystems) is an active-status manufacturer-recommended alternative with enhanced specifications: 100mA per-channel output (2.5× the MP3384EQ-LF-P), extended 40V maximum supply voltage, and dual dimming modes (analog + PWM). The 28-QFN-EP (5x5) package is larger and requires PCB layout modification. AEC-Q100 automotive qualification and -40°C to 125°C operating range support demanding applications. Selection is appropriate when higher output current or extended supply voltage is required and board space permits package upsizing.

LT3599IFE#PBF (Analog Devices Inc.) is an active-status alternative with superior specifications: 120mA per-channel output, extended 2.7V to 30V supply range, 44V output voltage, and dual dimming modes. The 28-TSSOP-EP package differs significantly from the original 16-QFN form factor and requires complete PCB redesign. MSL rating of 1 (Unlimited) matches the original part. Selection is appropriate for new designs or redesigns requiring maximum output current and supply voltage flexibility.

ADD5207ACPZ-RL (Analog Devices Inc.) is an active-status alternative with reduced output current (25mA per channel, below the 40mA requirement) and narrower operating temperature range (-25°C to 85°C). The 14-LFCSP (4x3) package is smaller than the original. This part does not meet the minimum current specification and is not recommended as a direct substitute for the MP3384EQ-LF-P.

Frequently Asked Questions (FAQ)

Q: Can MP3384EQ-LF-Z replace MP3384EQ-LF-P directly on existing PCBs?

A: Yes. MP3384EQ-LF-Z is a parametric equivalent with identical pin configuration, package dimensions (16-QFN 3x3), electrical specifications, and operating characteristics. No PCB modification is required.

Q: What is the primary difference between MP3384EQ-LF-P and A8519KETTR-R?

A: A8519KETTR-R provides higher per-channel output current (100mA vs. 40mA), extended maximum supply voltage (40V vs. 25V), dual dimming modes (analog + PWM vs. PWM only), and active product status. The package is larger (28-QFN-EP 5x5 vs. 16-QFN 3x3), requiring PCB redesign. A8519KETTR-R includes AEC-Q100 automotive qualification.

Q: Is LT3599IFE#PBF suitable for applications requiring 40mA per-channel output?

A: Yes. LT3599IFE#PBF exceeds the 40mA requirement with 120mA per-channel capability. However, the 28-TSSOP-EP package differs from the original 16-QFN form factor and requires complete PCB layout redesign. Pin assignments and thermal management characteristics differ significantly.

Q: Why is ADD5207ACPZ-RL not recommended as a substitute?

A: ADD5207ACPZ-RL provides only 25mA per-channel output current, which is below the 40mA specification of MP3384EQ-LF-P. Additionally, the operating temperature range (-25°C to 85°C) is narrower than the original (-40°C to 125°C), limiting suitability for extended temperature applications. The 14-LFCSP package also requires PCB modification.

Q: What does "Not For New Designs" status mean for MP3384EQ-LF-P?

A: This designation indicates the manufacturer has discontinued active development and recommends against use in new product designs. Existing inventory remains available for legacy production support and maintenance. For new designs, active-status alternatives such as A8519KETTR-R or LT3599IFE#PBF are preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (MP3384EQ-LF-Z, A8519KETTR-R, ADD5207ACPZ-RL, and LT3599IFE#PBF) are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of MP3384EQ-LF-P.

Q: Which substitute part has the best moisture sensitivity rating?

A: MP3384EQ-LF-Z and LT3599IFE#PBF both carry MSL rating 1 (Unlimited), identical to MP3384EQ-LF-P. A8519KETTR-R has MSL rating 2 (1 Year), and ADD5207ACPZ-RL has MSL rating 3 (168 Hours). Lower MSL ratings require stricter moisture control during storage and assembly.