MP3021DQ-LF-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3021DQ-LF-P is a 4-output LED driver IC with integrated DC-DC regulator utilizing switched capacitor (charge pump) topology. This device is classified as "Not For New Designs" by the manufacturer, making identification of suitable alternatives essential for ongoing production and new project development. The part operates across a 2.7V to 5.5V supply range with 30mA per-channel output capability, designed specifically for backlight applications in compact 16-QFN (3x3) surface mount packages.

Substiute Parts

MP3021DQ-LF-P

Monolithic Power Systems Inc.In Stock: 1977MP3021DQ-LF-P Datasheet

Current PartRFQ

MP1519DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 25251MP1519DQ-LF-Z Datasheet

MFR RecommendedRFQ

BD1604MVV-E2

Rohm SemiconductorIn Stock: 2878BD1604MVV-E2 Datasheet

MFR RecommendedRFQ

LP8551TLX/NOPB

Texas InstrumentsIn Stock: 784LP8551TLX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3021DQ-LF-P is determined by the following critical parameters:

• Topology: Switched Capacitor (Charge Pump) or equivalent DC-DC regulation method
• Number of Outputs: 4 channels minimum
• Supply Voltage Range: Minimum 2.7V input capability
• Output Current: 30mA per channel or greater
• Package Compatibility: 16-pin QFN or compatible surface mount package
• Operating Temperature Range: -40°C to 85°C or broader
• Compliance: ROHS3 and REACH compliance maintained

Three substitute parts meet these criteria with varying topology and performance characteristics. The MP1519DQ-LF-Z maintains identical topology and package footprint with reduced per-channel current (22mA). The BD1604MVV-E2 provides equivalent current capacity with different package geometry. The LP8551TLX/NOPB employs step-up (boost) topology with enhanced output voltage capability and higher per-channel current (50mA).

Parameter Comparison

Engineering Selection Recommendations

MP1519DQ-LF-Z is the primary recommended substitute for direct replacement in existing designs. This part maintains identical package geometry (16-VFQFN), matching PCB footprint requirements without layout modification. Both devices employ switched capacitor topology with comparable operating frequency. The MP1519DQ-LF-Z carries Active product status, ensuring long-term availability and continued manufacturer support. Per-channel current is reduced to 22mA versus the original 30mA; applications requiring full 30mA per channel must evaluate load requirements against this specification. Supply voltage range extends to 2.5V minimum, providing enhanced low-voltage operation capability.

BD1604MVV-E2 provides equivalent 30mA per-channel current capacity with identical topology and supply voltage specifications. This part is classified as "Not For New Designs," limiting its suitability for new project development. Package geometry differs (16-VQFN versus 16-VFQFN), requiring PCB layout verification for mechanical compatibility despite identical pin count and electrical interface.

LP8551TLX/NOPB represents a topology departure, employing step-up (boost) regulation instead of charge pump architecture. This device delivers 50mA per channel with 40V output capability, suitable for applications requiring elevated output voltage. The 25-DSBGA package introduces significant layout changes compared to the original 16-pin QFN footprint. This part carries Active product status. Selection of this substitute requires comprehensive circuit redesign and thermal management evaluation due to topology differences.

Frequently Asked Questions (FAQ)

Q: Can MP1519DQ-LF-Z directly replace MP3021DQ-LF-P without PCB modification?

A: Yes, the MP1519DQ-LF-Z maintains identical 16-VFQFN package geometry and pin configuration, enabling direct PCB footprint compatibility. However, the reduced per-channel current specification (22mA versus 30mA) must be evaluated against application load requirements.

Q: What is the primary difference between MP1519DQ-LF-Z and the original MP3021DQ-LF-P?

A: Both devices employ switched capacitor topology with 4 outputs in identical packages. The MP1519DQ-LF-Z reduces per-channel current to 22mA and adds analog dimming capability. The MP1519DQ-LF-Z carries Active product status, ensuring continued availability.

Q: Is BD1604MVV-E2 a pin-for-pin replacement?

A: BD1604MVV-E2 maintains 16-pin QFN package architecture with identical electrical specifications (30mA per channel, 2.7V-5.5V supply). Package designation differs (16-VQFN versus 16-VFQFN); physical dimensions and pin spacing require verification for PCB compatibility despite electrical equivalence.

Q: When should LP8551TLX/NOPB be selected as a substitute?

A: LP8551TLX/NOPB is appropriate for applications requiring output voltages exceeding 5.5V or per-channel currents exceeding 30mA. The step-up topology and 25-DSBGA package require complete circuit redesign and are not suitable for direct replacement scenarios.

Q: Are all substitute parts ROHS3 and REACH compliant?

A: Yes, all three substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original MP3021DQ-LF-P compliance profile.

Q: What is the operating temperature range difference between substitutes?

A: MP3021DQ-LF-P and MP1519DQ-LF-Z both operate across -40°C to 85°C. BD1604MVV-E2 and LP8551TLX/NOPB operate across -30°C to 85°C, providing a 10°C reduced lower temperature limit. Applications requiring -40°C operation must select MP1519DQ-LF-Z.

Q: Does dimming capability affect substitution suitability?

A: MP1519DQ-LF-Z adds analog dimming functionality not present in the original MP3021DQ-LF-P. This enhancement does not prevent substitution; applications not requiring dimming can operate the device without utilizing this feature. LP8551TLX/NOPB provides PWM dimming capability.