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MP2488DQ-LF-Z LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP2488DQ-LF-Z 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 regulator with step-down (buck) topology, PWM dimming capability, and 2A output current rating. It is housed in a 10-QFN (3x3) package with exposed pad and is designed for lighting applications in automotive-grade environments.
The MP2488DQ-LF-Z is currently in active production status with 20,308 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be achieved within the specified parameter ranges, or when design flexibility permits operation within alternative specifications.
Substiute Parts
Key Parameters
| Parameter | MP2488DQ-LF-Z |
|---|---|
| Manufacturer | Monolithic Power Systems Inc. |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage Supply Range | 4.5V to 55V |
| Current Output / Channel | 2A |
| Switching Frequency | 200kHz |
| Dimming Method | PWM |
| Operating Temperature | -40°C to 85°C (TA) |
| Grade | Automotive |
| Package Type | 10-VFDFN Exposed Pad (10-QFN 3x3) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the MP2488DQ-LF-Z are identified based on the following critical parameters:
Primary Substitution Criteria:
- DC-DC regulator topology: Step-Down (Buck) configuration
- Single output channel
- PWM dimming capability
- Input voltage range overlap: minimum 4.5V to 6V, maximum 40V to 55V
- Output current capability: 1A to 3A range
- Automotive-grade qualification or equivalent operating temperature range
- Surface mount packaging with exposed pad
- ROHS3 compliance and unlimited MSL rating preferred for supply chain reliability
Secondary Compatibility Factors:
- Switching frequency: 200kHz to 1.6MHz acceptable range
- Operating temperature: -40°C minimum and 85°C or higher maximum
- Package footprint compatibility: QFN, SOIC, TSSOP, or DFN variants
Substitutes are grouped into three categories based on output current capability and thermal characteristics:
Group 1 (Higher Current, 2.8A-3A): A6213KLJTR-T, LM3410XSD/NOPB Group 2 (Equivalent Current, 1A-2A): LM3404HVMR/NOPB, LM3404MA/NOPB, LM3414MRX/NOPB, LT3474IFE-1#PBF Group 3 (Lower Current, 80mA-1.2A): AL8861WT-7, LT3590EDC#TRMPBF, LT3590ESC8#TRMPBF, LM3553SDX/NOPB
Parameter Comparison
| Part Number | Manufacturer | Topology | Voltage Supply (Min-Max) | Current Output | Frequency | Dimming | Temp Range | Package | Grade |
|---|---|---|---|---|---|---|---|---|---|
| MP2488DQ-LF-Z | MPS | Step-Down (Buck) | 4.5V - 55V | 2A | 200kHz | PWM | -40°C to 85°C | 10-QFN (3x3) | Automotive |
| A6213KLJTR-T | Allegro MicroSystems | Step-Down (Buck) | 6V - 48V | 3A | — | PWM | -40°C to 125°C | 8-SOIC-EP | Automotive (AEC-Q100) |
| AL8861WT-7 | Diodes Incorporated | Step-Down (Buck) | 4.5V - 40V | 1A | 1MHz | Analog, PWM | -40°C to 85°C | SOT-23-5 (TSOT-25) | — |
| LM3404HVMR/NOPB | Texas Instruments | Step-Down (Buck) | 6V - 75V | 1A | 1MHz | PWM | -40°C to 125°C | 8-PowerSOIC | Automotive |
| LM3404MA/NOPB | Texas Instruments | Step-Down (Buck) | 6V - 42V | 1A | 1MHz | PWM | -40°C to 125°C | 8-SOIC | Automotive |
| LM3410XSD/NOPB | Texas Instruments | SEPIC, Step-Up (Boost) | 2.7V - 5.5V | 2.8A (Switch) | 1.6MHz | PWM | -40°C to 125°C | 6-WSON (3x3) | — |
| LM3414MRX/NOPB | Texas Instruments | Step-Down (Buck) | 4.5V - 42V | 1A | 500kHz | Analog, PWM | -40°C to 125°C | 8-PowerSOIC | Automotive |
| LM3553SDX/NOPB | Texas Instruments | Step-Up (Boost) | 2.7V - 5.5V | 1.2A (Flash) | 1.2MHz | I2C | -30°C to 85°C | 12-WSON (3x3) | — |
| LT3474IFE-1#PBF | Analog Devices Inc. | Step-Down (Buck) | 4.6V - 36V | 1A | 200kHz - 2MHz | PWM | -40°C to 125°C | 16-TSSOP-EP | Automotive |
| LT3590EDC#TRMPBF | Analog Devices Inc. | Step-Down (Buck) | 4.5V - 55V | 80mA (Switch) | 850kHz | PWM | -40°C to 85°C | 6-DFN (2x2) | — |
| LT3590ESC8#TRMPBF | Analog Devices Inc. | Step-Down (Buck) | 4.5V - 55V | 80mA (Switch) | 850kHz | PWM | -40°C to 85°C | SC-70-8 | — |
Engineering Selection Recommendations
Direct Substitutes (Equivalent Performance):
LT3474IFE-1#PBF and LM3404MA/NOPB are the closest functional equivalents to the MP2488DQ-LF-Z. Both maintain step-down buck topology, PWM dimming, automotive-grade qualification, and overlapping input voltage ranges. LT3474IFE-1#PBF offers wider frequency tuning (200kHz–2MHz) and extended temperature rating (-40°C to 125°C), while LM3404MA/NOPB provides identical dimming method and automotive certification with standard 1MHz operation.
Higher Current Capability Substitutes:
A6213KLJTR-T (3A) and LM3410XSD/NOPB (2.8A switch current) provide increased output current capacity. A6213KLJTR-T maintains buck topology with automotive AEC-Q100 qualification and 8-SOIC-EP packaging. LM3410XSD/NOPB uses SEPIC/boost topology with lower input voltage range (2.7V–5.5V), suitable only for applications where input voltage does not exceed 5.5V.
Lower Current Substitutes:
AL8861WT-7, LT3590EDC#TRMPBF, and LT3590ESC8#TRMPBF are suitable for applications requiring reduced output current (1A or 80mA). AL8861WT-7 offers dual dimming capability (analog and PWM) in compact SOT-23-5 packaging. LT3590 variants (EDC and ESC8) maintain identical input voltage range (4.5V–55V) and PWM dimming with different package options (6-DFN or SC-70-8).
Compliance and Certification:
All recommended substitutes maintain ROHS3 compliance. Automotive-grade parts include A6213KLJTR-T (AEC-Q100), LM3404HVMR/NOPB, LM3404MA/NOPB, LM3414MRX/NOPB, and LT3474IFE-1#PBF. Non-automotive-grade substitutes (AL8861WT-7, LM3410XSD/NOPB, LM3553SDX/NOPB, LT3590 variants) are suitable for non-automotive lighting applications.
Packaging Considerations:
The MP2488DQ-LF-Z uses 10-QFN (3x3) packaging. Substitutes employ various surface-mount packages: 8-SOIC, 8-PowerSOIC, 6-WSON, 16-TSSOP, 6-DFN, and SC-70-8. PCB layout modifications are required for any package change.
Frequently Asked Questions (FAQ)
Q: Can A6213KLJTR-T replace MP2488DQ-LF-Z directly?
A: A6213KLJTR-T is functionally compatible as a higher-current substitute (3A vs. 2A). Both use step-down buck topology with PWM dimming and automotive qualification. However, the input voltage minimum is 6V (vs. 4.5V for MP2488DQ-LF-Z), and packaging differs (8-SOIC-EP vs. 10-QFN). Verify that your application input voltage does not fall below 6V and that PCB layout accommodates the different package footprint.
Q: What is the difference between LM3404HVMR/NOPB and LM3404MA/NOPB?
A: Both are LM3404 variants with identical topology, frequency, and dimming method. LM3404HVMR/NOPB uses 8-PowerSOIC packaging and supports higher input voltage (up to 75V vs. 42V). LM3404MA/NOPB uses standard 8-SOIC packaging. Select based on your maximum input voltage requirement and available PCB space.
Q: Can LM3410XSD/NOPB be used as a substitute?
A: LM3410XSD/NOPB uses SEPIC/boost topology rather than buck topology and has a significantly lower input voltage range (2.7V–5.5V). It is not suitable for applications requiring step-down regulation from higher input voltages. Use only if your application operates within 2.7V–5.5V input range and requires boost capability.
Q: Are LT3590 variants (EDC and ESC8) interchangeable?
A: LT3590EDC#TRMPBF and LT3590ESC8#TRMPBF are functionally identical with identical electrical specifications (80mA output, 4.5V–55V input, 850kHz frequency, PWM dimming). The difference is packaging: 6-DFN (2x2) vs. SC-70-8. Select based on PCB layout requirements and available space. Both maintain unlimited MSL rating and -40°C to 85°C operating temperature.
Q: Why does LM3553SDX/NOPB appear in the substitute list if it uses I2C dimming instead of PWM?
A: LM3553SDX/NOPB is included because it shares the same DC-DC regulator classification, step-up topology, and automotive lighting application context. However, its I2C dimming interface differs fundamentally from PWM dimming. This part is suitable only if your application supports I2C control and operates within 2.7V–5.5V input range. It is not a direct PWM-compatible substitute.
Q: What packaging considerations apply when switching from MP2488DQ-LF-Z to LT3474IFE-1#PBF?
A: MP2488DQ-LF-Z uses 10-QFN (3x3) with 10 pins, while LT3474IFE-1#PBF uses 16-TSSOP-EP with 16 pins. The larger pin count and different footprint require complete PCB redesign. However, LT3474IFE-1#PBF offers superior frequency flexibility (200kHz–2MHz tuning) and extended temperature rating (-40°C to 125°C), which may justify the layout effort for demanding applications.
Q: Is AL8861WT-7 suitable for automotive applications?
A: AL8861WT-7 is not automotive-grade certified. It is suitable for non-automotive lighting applications including backlight, signage, and general illumination. For automotive-grade requirements, select from LM3404HVMR/NOPB, LM3404MA/NOPB, LM3414MRX/NOPB, A6213KLJTR-T, or LT3474IFE-1#PBF.
Q: What is the MSL (Moisture Sensitivity Level) impact when substituting parts?
A: MP2488DQ-LF-Z has MSL 1 (unlimited shelf life). Most recommended substitutes maintain MSL 1 (AL8861WT-7, LT3474IFE-1#PBF, LT3590 variants). Some alternatives have MSL 3 (168 hours): A6213KLJTR-T, LM3404HVMR/NOPB, LM3414MRX/NOPB, LM3553SDX/NOPB. MSL 3 parts require controlled storage and handling to prevent moisture absorption. Verify your supply chain and storage capabilities before selecting MSL 3 alternatives.
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