MP3306EG-LF-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3306EG-LF-P is an active LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a 1-output DC-DC Step-Up (Boost) regulator with integrated PWM and analog dimming capabilities, rated for 1.8A switch current and designed for backlight applications. The part is ROHS3 compliant, MSL Level 1, and currently in active production status with 3606 units in stock.

Equivalent and substitute parts are identified based on matching functional topology, output configuration, dimming capability, and thermal operating range. Alternative models may be required due to supply constraints, packaging preferences, or application-specific thermal requirements.

Substiute Parts

MP3306EG-LF-P

Monolithic Power Systems Inc.In Stock: 3645MP3306EG-LF-P Datasheet

Current PartRFQ

MP3306EG-LF-Z

Monolithic Power Systems Inc.In Stock: 20230MP3306EG-LF-Z Datasheet

Parametric EquivalentRFQ

AP5724WUG-7

Diodes IncorporatedIn Stock: 2039AP5724WUG-7 Datasheet

MFR RecommendedRFQ

LM3402HVMMX/NOPB

Texas InstrumentsIn Stock: 2192LM3402HVMMX/NOPB Datasheet

MFR RecommendedRFQ

LM3410XMFX/NOPB

Texas InstrumentsIn Stock: 3113LM3410XMFX/NOPB Datasheet

MFR RecommendedRFQ

LT1937ES5#TRPBF

Analog Devices Inc.In Stock: 37868LT1937ES5#TRPBF Datasheet

MFR RecommendedRFQ

LT3491EDC#TRPBF

Analog Devices Inc.In Stock: 42567LT3491EDC#TRPBF Datasheet

MFR RecommendedRFQ

MIC3202YME

Microchip TechnologyIn Stock: 1630MIC3202YME Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP3306EG-LF-P are classified into two categories based on parametric equivalence:

Parametric Equivalent (Direct Substitution):

• MP3306EG-LF-Z: Identical electrical specifications, topology, and thermal range. Differs only in packaging designation. Suitable for direct replacement in existing designs.

Functional Equivalents (Application-Level Substitution): Substitute parts are selected based on the following critical parameters:

• Topology: Step-Up (Boost) or SEPIC configuration
• Number of Outputs: Single output only
• Dimming Capability: PWM and/or Analog dimming support
• Operating Temperature Range: Minimum -40°C junction or ambient temperature
• Internal Switch: Integrated switching element required
• Applications: Backlight or Lighting designation

Parts that deviate from these core parameters (such as Step-Down topology, different output counts, or reduced temperature ranges) are included as functional alternatives for specific application scenarios where topology flexibility or thermal derating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (No Design Changes Required):

• MP3306EG-LF-Z is a parametric equivalent with identical electrical performance and thermal specifications. This part is suitable for direct replacement and requires no circuit modifications.

Functional Equivalents (Design Verification Required):

Boost topology alternatives with comparable current handling:

• LM3410XMFX/NOPB: Supports higher switch current (2.8A) with SEPIC/Boost topology flexibility. Maintains -40°C to 125°C operating range. Requires verification of output voltage range compatibility (3V–24V vs. 30V fixed output).
• LT1937ES5#TRPBF: Boost topology with dual dimming (Analog/PWM). Lower current rating (320mA) and reduced temperature range (-40°C to 85°C ambient). Suitable for lower-power backlight applications.
• LT3491EDC#TRPBF: Boost topology with PWM dimming. Lowest current rating (260mA) and reduced temperature range. Highest switching frequency (2.3MHz) enables smaller passive component footprint.

Buck topology alternatives (topology change):

• LM3402HVMMX/NOPB: Step-Down topology with extended supply voltage range (6V–75V). Reduced current (500mA) and temperature range (-40°C to 125°C junction). Suitable only for applications where input voltage exceeds output voltage requirement.
• MIC3202YME: Step-Down topology with 1A current rating. Extended supply range (6V–37V). Reduced temperature range (-40°C to 125°C junction). MSL Level 2 requires controlled storage conditions.

Lower-current Boost alternative:

• AP5724WUG-7: Boost topology with reduced current (750mA) and supply range (2.7V–5.5V). Temperature range limited to -40°C to 85°C ambient. Compact TSOT-23-6 package. Suitable for space-constrained, lower-power applications.

All substitute parts maintain ROHS3 compliance and active production status. Selection should be based on specific application requirements for output voltage, current capacity, thermal environment, and package constraints.

Frequently Asked Questions (FAQ)

Q: Can MP3306EG-LF-Z be used as a direct replacement for MP3306EG-LF-P? A: Yes. MP3306EG-LF-Z is a parametric equivalent with identical electrical specifications, topology, output voltage, current rating, thermal range, and dimming capability. The parts differ only in packaging designation and are interchangeable in existing designs without circuit modifications.

Q: What is the primary difference between Boost and Buck topology substitutes? A: Boost (Step-Up) topology increases input voltage to a higher output voltage, suitable for applications requiring voltage elevation. Buck (Step-Down) topology reduces input voltage to a lower output voltage. The MP3306EG-LF-P uses Boost topology. Buck alternatives (LM3402HVMMX/NOPB, MIC3202YME) are functional equivalents only when application requirements permit topology change and input voltage exceeds desired output voltage.

Q: Which substitute parts maintain the same current rating as MP3306EG-LF-P? A: Only MP3306EG-LF-Z matches the 1.8A switch current rating. LM3410XMFX/NOPB exceeds this specification at 2.8A. All other substitutes provide reduced current ratings (750mA to 1A), requiring design verification for power delivery adequacy.

Q: Are there temperature range differences between the main part and substitutes? A: Yes. MP3306EG-LF-P operates at -40°C to 125°C (junction temperature). Substitutes vary: LM3410XMFX/NOPB and LM3402HVMMX/NOPB maintain this range. AP5724WUG-7, LT1937ES5#TRPBF, and LT3491EDC#TRPBF are limited to -40°C to 85°C (ambient temperature), requiring thermal derating analysis for high-temperature applications.

Q: What does MSL Level 2 mean for MIC3202YME? A: MSL (Moisture Sensitivity Level) 2 indicates the part requires controlled storage conditions with maximum floor life of 1 year at 30°C / 60% relative humidity. MP3306EG-LF-P and most substitutes are MSL Level 1 (unlimited floor life). MIC3202YME requires more stringent moisture control during storage and handling.

Q: Can LT3491EDC#TRPBF replace MP3306EG-LF-P in a high-current application? A: No. LT3491EDC#TRPBF is rated for 260mA switch current, significantly lower than the MP3306EG-LF-P specification of 1.8A. This part is suitable only for low-power backlight applications. Use LM3410XMFX/NOPB (2.8A) for higher-current requirements.

Q: What package options are available among the substitutes? A: MP3306EG-LF-P uses 12-TFQFN (2x2). Substitutes offer: MP3306EG-LF-Z (12-TFQFN), AP5724WUG-7 (TSOT-23-6), LM3402HVMMX/NOPB (8-VSSOP), LM3410XMFX/NOPB (SOT-23-5), LT1937ES5#TRPBF (TSOT-23-5), LT3491EDC#TRPBF (6-DFN), MIC3202YME (8-SOIC-EP). Package selection depends on PCB layout constraints and thermal dissipation requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, consistent with MP3306EG-LF-P environmental and regulatory requirements.