MPQ3387LGRT-P Equivalent & Substitute Parts

Part Overview

The MPQ3387LGRT-P is an LED Driver IC manufactured by Monolithic Power Systems, classified as a Power Management PMIC. This device functions as a 6-output DC-DC regulator with step-up (boost) topology, delivering 45mA per channel output current with analog and PWM dimming capabilities. The part is actively produced, AEC-Q100 qualified for automotive applications, and ROHS3 compliant. Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameter ranges for LED driver applications.

Substiute Parts

MPQ3387LGRT-P

Monolithic Power SystemsIn Stock: 663MPQ3387LGRT-P Datasheet

Current PartRFQ

LP8556TME-E03/NOPB

Texas InstrumentsIn Stock: 1189LP8556TME-E03/NOPB Datasheet

MFR RecommendedRFQ

LT3598EFE#PBF

Analog Devices Inc.In Stock: 2298LT3598EFE#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MPQ3387LGRT-P are qualified based on the following criteria:

Core Functional Requirements:

• Device type: DC-DC Regulator with step-up (boost) topology
• Application: LED driver with backlight capability
• Dimming capability: Analog and/or PWM support
• Supply voltage range compatibility: Minimum 3V input, maximum 25V input
• Output voltage capability: Minimum 45V output
• Output current per channel: Minimum 45mA

Compliance & Status:

• Product status: Active
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts may differ in package type, number of outputs, frequency range, and operating temperature specifications, provided they meet or exceed the core electrical requirements and maintain active product status with equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

LP8556TME-E03/NOPB (Texas Instruments)

This substitute meets core functional requirements with 5 outputs, 50mA per-channel current capability, and step-up boost topology. Supply voltage range is 2.7V to 20V, which covers the minimum 3V requirement but has a lower maximum of 20V compared to the 25V specification of the MPQ3387LGRT-P. Output voltage range of 7V to 43V falls below the 45V requirement of the main part. PWM dimming is supported; analog dimming is not available. The device is actively produced, ROHS3 compliant, and MSL 1 rated. Package type is 20-DSBGA, requiring PCB layout redesign.

LT3598EFE#PBF (Analog Devices Inc.)

This substitute provides 6 outputs matching the main part, with step-up boost topology and both analog and PWM dimming support. Supply voltage range is 3V to 30V, exceeding the 25V maximum of the MPQ3387LGRT-P. Output voltage is 44V, which is 1V below the 45V specification. Current per channel is 30mA, which is below the 45mA requirement. The device is actively produced, ROHS3 compliant, and MSL 1 rated. Operating temperature range extends to -40°C to 125°C. Package type is 24-TSSOP, requiring PCB layout redesign from the 24-WFQFN format.

Frequently Asked Questions (FAQ)

Q: Can LP8556TME-E03/NOPB replace MPQ3387LGRT-P in all applications?

A: No. The LP8556TME-E03/NOPB has a maximum output voltage of 43V, which is below the 45V requirement. Additionally, it lacks analog dimming capability and has a lower maximum supply voltage of 20V. These differences may impact performance in applications requiring the full 45V output or analog dimming control.

Q: What are the key differences between LT3598EFE#PBF and MPQ3387LGRT-P?

A: The LT3598EFE#PBF provides matching output count (6) and dimming modes (analog and PWM). However, it delivers 30mA per channel versus 45mA for the main part, and its output voltage is 44V instead of 45V. The package format differs (24-TSSOP versus 24-WFQFN), requiring PCB redesign.

Q: Are all substitute parts automotive-qualified?

A: The MPQ3387LGRT-P carries AEC-Q100 automotive qualification. The substitute parts LP8556TME-E03/NOPB and LT3598EFE#PBF are not specified with automotive qualification in the provided data.

Q: Do package differences affect substitution feasibility?

A: Yes. The MPQ3387LGRT-P uses 24-WFQFN packaging, while LP8556TME-E03/NOPB uses 20-DSBGA and LT3598EFE#PBF uses 24-TSSOP. Different package types require PCB layout modifications, including changes to pad patterns, trace routing, and thermal management design.

Q: Which substitute is closest to the original part?

A: LT3598EFE#PBF matches the output count (6) and dimming capabilities (analog and PWM) most closely. However, it has lower per-channel current (30mA versus 45mA) and slightly lower output voltage (44V versus 45V). LP8556TME-E03/NOPB has higher per-channel current (50mA) but lower output voltage (43V maximum) and lacks analog dimming.

Q: What compliance certifications are common across all parts?

A: All three parts are ROHS3 compliant, actively produced, and rated MSL 1 (Unlimited moisture sensitivity level).