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MPQ4425MGQB-Z LED Driver IC Equivalent & Substitute Parts
Part Overview
The MPQ4425MGQB-Z is an active LED driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a DC-DC regulator with step-down (buck) topology, delivering 1.5A output current with PWM dimming capability for lighting applications. The part is housed in a 13-QFN (2.5x3) surface mount package and operates across a 4V to 36V supply voltage range at 2.2MHz switching frequency. With AEC-Q100 automotive qualification and ROHS3 compliance, this component is actively produced and widely stocked (969 units available). Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and packaging options while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MPQ4425MGQB-Z |
| Manufacturer | Monolithic Power Systems Inc. |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Package / Case | 13-PowerVQFN |
| Supplier Device Package | 13-QFN (2.5x3) |
| Voltage - Supply (Min) | 4V |
| Voltage - Supply (Max) | 36V |
| Current - Output / Channel | 1.5A |
| Frequency | 2.2MHz |
| Dimming | PWM |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | Automotive |
| Qualification | AEC-Q100 |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the MPQ4425MGQB-Z are identified based on strict electrical and mechanical parameter matching. The critical parameters determining substitutability are:
- DC-DC regulator topology (Step-Down/Buck)
- Supply voltage range (4V to 36V)
- Output current capability (1.5A)
- Switching frequency (2.2MHz)
- PWM dimming functionality
- Package type (13-QFN 2.5x3)
- Operating temperature range (-40°C to 125°C)
- Surface mount configuration
- Automotive grade and AEC-Q100 qualification
Substitute parts are grouped into two categories:
Category 1: Direct Electrical Equivalents (MPQ4425 Base Series) Parts sharing the identical MPQ4425 base product number with variations only in packaging format (Tape & Reel vs. Cut Tape) and automotive qualification suffix. These include MPQ4425AGQB-P, MPQ4425AGQB-AEC1-P, MPQ4425AGQB-Z, MPQ4425MGQB-AEC1-P, and MPQ4425MGQB-AEC1-Z.
Category 2: Parametric Equivalents (MPQ7235 Series) Parts with identical electrical specifications and package geometry but different base product designation. These include MP7235GQBE-P, MP7235GQBE-Z, MPQ7235GQBE-AEC1-P, and MPQ7235GQBE-AEC1-Z. The MPQ7235 series maintains all critical electrical parameters while offering alternative application focus (infrared radiation vs. general lighting).
Category 3: Cross-Manufacturer Alternatives (MP4425 Series) Parts from the same manufacturer with matching electrical and mechanical specifications but different packaging designations. These include MP4425AGQB-P and MP4425AGQB-Z.
Parameter Comparison
| Part Number | Manufacturer | Topology | Supply Voltage (Min-Max) | Output Current | Frequency | Dimming | Package | Operating Temp | Grade | Qualification | Packaging Format | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MPQ4425MGQB-Z | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 969 Pcs |
| MPQ4425AGQB-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 1451 Pcs |
| MPQ4425AGQB-AEC1-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 1651 Pcs |
| MPQ4425MGQB-AEC1-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 829 Pcs |
| MPQ4425MGQB-AEC1-Z | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 2300 Pcs |
| MP4425AGQB-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Cut Tape | 1180 Pcs |
| MP4425AGQB-Z | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Cut Tape | 2813 Pcs |
| MPQ7235GQBE-AEC1-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Tape & Reel | 2118 Pcs |
| MPQ7235GQBE-AEC1-Z | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Automotive | AEC-Q100 | Cut Tape & Digi-Reel | 15300 Pcs |
| MP7235GQBE-P | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Not Specified | Not Specified | Tape & Reel | 2562 Pcs |
| MP7235GQBE-Z | MPS | Step-Down (Buck) | 4V - 36V | 1.5A | 2.2MHz | PWM | 13-QFN (2.5x3) | -40°C ~ 125°C | Not Specified | Not Specified | Tape & Reel | 5858 Pcs |
Engineering Selection Recommendations
All listed substitute parts maintain full electrical and mechanical compatibility with the MPQ4425MGQB-Z across the specified parameter set. Selection among equivalents should be based on the following engineering criteria:
For Automotive Applications with AEC-Q100 Requirement: Parts bearing the AEC-Q100 qualification suffix are mandatory for automotive-grade designs. These include MPQ4425AGQB-AEC1-P, MPQ4425MGQB-AEC1-P, MPQ4425MGQB-AEC1-Z, MPQ7235GQBE-AEC1-P, and MPQ7235GQBE-AEC1-Z. The MPQ7235GQBE-AEC1-Z variant offers the highest inventory availability (15,300 units) while maintaining full compliance.
For Packaging Format Flexibility: Tape & Reel (TR) packaging is suitable for automated assembly processes. Cut Tape (CT) variants such as MP4425AGQB-P and MP4425AGQB-Z provide alternative handling options. The MP4425AGQB-Z offers substantial inventory (2,813 units) in Cut Tape format.
For Supply Chain Continuity: The MPQ7235GQBE-AEC1-Z provides the largest available inventory (15,300 units) while maintaining all critical electrical specifications and automotive qualification. This variant is recommended when supply assurance is a primary concern.
For Non-Automotive Applications: Parts without automotive grade designation (MP7235GQBE-P and MP7235GQBE-Z) are electrically equivalent but lack AEC-Q100 certification. These are suitable only for non-automotive applications where automotive qualification is not required.
Frequently Asked Questions (FAQ)
Q: Can MPQ4425MGQB-Z be directly replaced with MPQ7235GQBE-AEC1-Z?
A: Yes. Both parts share identical electrical specifications (4V-36V supply, 1.5A output, 2.2MHz frequency, PWM dimming) and the same 13-QFN (2.5x3) package geometry. Both carry AEC-Q100 automotive qualification and operate across -40°C to 125°C. The substitution is electrically and mechanically valid.
Q: What is the difference between Tape & Reel and Cut Tape packaging?
A: Tape & Reel (TR) packaging is optimized for high-volume automated assembly using pick-and-place equipment. Cut Tape (CT) packaging provides individual component strips suitable for lower-volume or manual assembly processes. Electrical performance and component specifications remain identical; the difference is purely in handling and assembly methodology.
Q: Are parts without AEC-Q100 qualification suitable for automotive applications?
A: No. Automotive-grade designs require AEC-Q100 qualified components. Parts such as MP7235GQBE-P and MP7235GQBE-Z lack this certification and are not approved for automotive use. Only parts explicitly marked with AEC-Q100 qualification should be used in automotive designs.
Q: Why are there multiple part numbers for essentially the same device?
A: Part number variations reflect manufacturing date codes, packaging formats, and qualification levels. The suffix letters indicate packaging type (P for Tape & Reel, Z for alternative format), while AEC1 designation confirms automotive qualification. These variations allow design engineers to select the specific variant matching their assembly process and compliance requirements.
Q: Is the MPQ4425 series interchangeable with the MPQ7235 series?
A: Yes, within the specified parameter set. Both series maintain identical electrical characteristics (supply voltage, output current, switching frequency, PWM dimming) and package geometry. The primary difference is application focus: MPQ4425 targets general lighting, while MPQ7235 targets infrared radiation applications. Electrical substitution is valid for either application.
Q: What inventory levels should I consider for long-term supply planning?
A: The MPQ7235GQBE-AEC1-Z offers the highest availability at 15,300 units. For automotive applications requiring AEC-Q100 certification, this variant provides the strongest supply position. Alternative qualified variants (MPQ4425MGQB-AEC1-Z with 2,300 units and MPQ7235GQBE-AEC1-P with 2,118 units) provide secondary sourcing options.
Q: Can I mix packaging formats within a single production run?
A: Mixing Tape & Reel and Cut Tape formats within a single assembly run is not recommended due to different handling requirements and assembly line compatibility. Maintain consistent packaging format throughout a production batch to ensure process stability and traceability.
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