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

Part Overview

The MP3306EG-LF-Z is an active LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device functions as a 1-output DC-DC regulator with step-up (boost) topology, delivering 1.8A switch current at 690kHz with analog and PWM dimming capabilities for backlight applications. The part is ROHS3 compliant, REACH unaffected, and currently in active production status with 20,200 units in stock.

Substitute parts are necessary when the original MP3306EG-LF-Z becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design revisions necessitate compatible alternatives that maintain functional equivalence within specified electrical and mechanical parameters.

Substiute Parts

MP3306EG-LF-Z

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

Current PartRFQ

MP3306EG-LF-P

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

Parametric EquivalentRFQ

AL8861MP-13

Diodes IncorporatedIn Stock: 7790AL8861MP-13 Datasheet

MFR RecommendedRFQ

LT3518HUF#PBF

Analog Devices Inc.In Stock: 1347LT3518HUF#PBF Datasheet

MFR RecommendedRFQ

LT3519EMS#PBF

Analog Devices Inc.In Stock: 2166LT3519EMS#PBF Datasheet

MFR RecommendedRFQ

LTC3202EDD#PBF

Analog Devices Inc.In Stock: 882LTC3202EDD#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3306EG-LF-Z is determined by the following critical parameters:

Primary Equivalence Criteria:

• Topology: Step-Up (Boost) configuration
• Number of Outputs: 1 output channel
• Voltage Supply Range: Minimum 3V, Maximum 12V
• Output Voltage: 30V
• Current Capability: 1.8A (Switch)
• Dimming Control: Analog and PWM support
• Operating Temperature Range: -40°C to 125°C (TJ)
• Package Type: 12-QFN (2x2) form factor
• Mounting: Surface Mount

Packaging Variants: The MP3306EG-LF-P represents a direct parametric equivalent differing only in packaging format (Tape & Reel vs. standard packaging), maintaining identical electrical specifications and performance characteristics.

Functional Alternatives: Substitute parts listed below provide equivalent LED driver functionality within the specified parameter ranges. Differences in topology (buck, buck-boost, SEPIC, or charge pump), package size, current ratings, or temperature ranges are explicitly noted and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalent: MP3306EG-LF-P is the primary substitute for MP3306EG-LF-Z. Both parts maintain identical electrical specifications, operating parameters, and performance characteristics. The distinction is packaging format only (Tape & Reel vs. standard packaging). Selection between these two depends solely on manufacturing process requirements and supply chain availability.

Functional Alternatives with Design Considerations:

AL8861MP-13 (Diodes Incorporated) operates as a step-down (buck) topology rather than step-up (boost), with a higher minimum supply voltage (4.5V vs. 3V) and lower current output (1.5A vs. 1.8A). This part is suitable only for applications where input voltage exceeds output voltage requirements and current demands do not exceed 1.5A. Operating temperature range is reduced to -40°C to 85°C (TA).

LT3518HUF#PBF (Analog Devices Inc.) provides buck-boost topology flexibility with higher current capability (2.3A) and extended operating temperature to 150°C (TJ). Supply voltage range extends to 30V maximum. Package size increases to 16-QFN (4x4). This part accommodates broader input voltage scenarios and higher thermal environments.

LT3519EMS#PBF (Analog Devices Inc.) offers SEPIC, buck, and boost topology options with lower current output (750mA) and reduced operating temperature range (-40°C to 125°C TJ). Supply voltage range extends to 30V. Package is 16-MSOP. This part is suitable for applications requiring topology flexibility with lower current demands.

LTC3202EDD#PBF (Analog Devices Inc.) employs switched capacitor (charge pump) topology with significantly reduced current capability (125mA) and restricted supply voltage range (2.7V to 4.5V). Operating temperature is -40°C to 85°C (TA). Package is 10-DFN (3x3). This part is applicable only to low-current backlight applications with limited input voltage.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and active product status. Selection must account for topology differences, current requirements, temperature operating ranges, and package footprint constraints specific to the target application.

Frequently Asked Questions (FAQ)

Q: Can MP3306EG-LF-P be used as a direct replacement for MP3306EG-LF-Z?

A: Yes. MP3306EG-LF-P is a direct parametric equivalent with identical electrical specifications, operating voltage ranges (3V to 12V), output voltage (30V), current capability (1.8A), frequency (690kHz), dimming control (analog and PWM), and operating temperature range (-40°C to 125°C TJ). The only difference is packaging format (Tape & Reel). No circuit modifications are required.

Q: What is the primary difference between MP3306EG-LF-Z and AL8861MP-13?

A: The MP3306EG-LF-Z uses step-up (boost) topology, while AL8861MP-13 uses step-down (buck) topology. Boost topology steps up voltage from a lower input to a higher output; buck topology steps down voltage from a higher input to a lower output. AL8861MP-13 also has a higher minimum supply voltage (4.5V vs. 3V), lower current output (1.5A vs. 1.8A), and reduced operating temperature range (-40°C to 85°C TA vs. -40°C to 125°C TJ). These differences make AL8861MP-13 unsuitable for applications requiring boost conversion from 3V input or currents exceeding 1.5A.

Q: Is LT3518HUF#PBF compatible with the MP3306EG-LF-Z application?

A: LT3518HUF#PBF provides functional compatibility for backlight LED driver applications but with design trade-offs. It offers buck-boost topology (more flexible than boost-only), higher current capability (2.3A vs. 1.8A), and extended temperature rating (up to 150°C TJ). However, the package is larger (16-QFN vs. 12-QFN), and circuit design must accommodate the different pin configuration and topology. Compatibility depends on whether the application can accommodate these physical and electrical differences.

Q: Why does LTC3202EDD#PBF have such lower current output (125mA)?

A: LTC3202EDD#PBF uses switched capacitor (charge pump) topology, which is fundamentally different from the boost topology of MP3306EG-LF-Z. Charge pump designs are inherently limited to lower current outputs and are optimized for low-voltage, low-current backlight applications. This part is suitable only for applications with current demands below 125mA.

Q: What packaging considerations apply when selecting a substitute?

A: The MP3306EG-LF-Z uses 12-QFN (2x2) package. Substitutes use different packages: MP3306EG-LF-P (12-QFN, identical), AL8861MP-13 (8-MSOP), LT3518HUF#PBF (16-QFN), LT3519EMS#PBF (16-MSOP), and LTC3202EDD#PBF (10-DFN). Different packages have different pin counts, footprints, and thermal characteristics. PCB layout and routing must be redesigned for any package change. Verify that the target package fits the available PCB space and that thermal management requirements are met.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—MP3306EG-LF-P, AL8861MP-13, LT3518HUF#PBF, LT3519EMS#PBF, and LTC3202EDD#PBF—are ROHS3 compliant and REACH unaffected, matching the compliance status of the MP3306EG-LF-Z.

Q: What is the difference between operating temperature specifications (TJ vs. TA)?

A: TJ (Junction Temperature) refers to the temperature at the semiconductor die itself, which is typically higher than ambient temperature due to internal power dissipation. TA (Ambient Temperature) refers to the surrounding air temperature. Parts specified with TJ ratings typically have higher absolute maximum temperatures. When comparing operating ranges, ensure specifications use the same temperature reference (TJ or TA) for accurate comparison.