MPQ4425AGQB-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MPQ4425AGQB-Z is an active-status 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 across a 4V to 36V supply range. The part is packaged in a 13-QFN (2.5x3) form factor and qualifies for automotive applications under AEC-Q100 certification.

Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters. Alternative models enable design flexibility, inventory optimization, and supply chain continuity while maintaining functional equivalence in lighting and power management applications.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Number of Outputs	1
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)
Package / Case	13-PowerVQFN
Supplier Device Package	13-QFN (2.5x3)
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MPQ4425AGQB-Z are identified through strict parametric matching across the following critical criteria:

Electrical Equivalence: All substitute parts maintain identical supply voltage range (4V–36V), output current rating (1.5A), switching frequency (2.2MHz), and PWM dimming functionality.

Package Compatibility: All substitutes use the 13-PowerVQFN package in 13-QFN (2.5x3) form factor, ensuring mechanical and thermal compatibility with existing PCB layouts.

Operational Parameters: Operating temperature range (-40°C to 125°C), internal switch configuration, single-output topology, and step-down buck regulation are consistent across all equivalent parts.

Compliance & Certification: Automotive-grade parts maintain AEC-Q100 qualification, ROHS3 compliance, and REACH unaffected status where applicable.

Packaging Variants: Substitutes differ in packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) and base product designations (MPQ4425, MP4425, MPQ7235, MP7235) but retain functional equivalence.

The following part numbers are grouped as parametric equivalents:

MPQ4425AGQB-P (Tape & Reel)
MPQ4425AGQB-AEC1-P (Tape & Reel, AEC-Q100)
MPQ4425MGQB-AEC1-P (Tape & Reel, AEC-Q100)
MPQ4425MGQB-AEC1-Z (Automotive-qualified variant)
MP4425AGQB-P (Cut Tape variant)
MP4425AGQB-Z (Cut Tape variant)
MPQ7235GQBE-AEC1-P (Automotive synchronous buck)
MPQ7235GQBE-AEC1-Z (Automotive synchronous buck, high inventory)
MP7235GQBE-P (Tape & Reel, infrared radiation application)
MP7235GQBE-Z (Tape & Reel, infrared radiation application)

Parameter Comparison

Part Number	Manufacturer	Packaging	Supply Voltage (Min-Max)	Output Current	Frequency	Operating Temp	Grade	Qualification	Inventory (Pcs)
MPQ4425AGQB-Z	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	1119
MPQ4425AGQB-P	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	1451
MPQ4425AGQB-AEC1-P	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	1651
MPQ4425MGQB-AEC1-P	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	829
MPQ4425MGQB-AEC1-Z	Monolithic Power Systems Inc.	Not Specified	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	2300
MP4425AGQB-P	Monolithic Power Systems Inc.	Cut Tape (CT)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	1180
MP4425AGQB-Z	Monolithic Power Systems Inc.	Cut Tape (CT)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	2813
MPQ7235GQBE-AEC1-P	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	2118
MPQ7235GQBE-AEC1-Z	Monolithic Power Systems Inc.	Cut Tape (CT) & Digi-Reel®	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Automotive	AEC-Q100	15300
MP7235GQBE-P	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Not Specified	Not Specified	2562
MP7235GQBE-Z	Monolithic Power Systems Inc.	Tape & Reel (TR)	4V–36V	1.5A	2.2MHz	-40°C ~ 125°C	Not Specified	Not Specified	5858

Engineering Selection Recommendations

Primary Selection Criteria:

Automotive Compliance: For applications requiring AEC-Q100 qualification, select from the following parts: MPQ4425AGQB-Z, MPQ4425AGQB-P, MPQ4425AGQB-AEC1-P, MPQ4425MGQB-AEC1-P, MPQ4425MGQB-AEC1-Z, MP4425AGQB-P, MP4425AGQB-Z, MPQ7235GQBE-AEC1-P, or MPQ7235GQBE-AEC1-Z.
Packaging Format:
- Tape & Reel (TR) format: MPQ4425AGQB-Z, MPQ4425AGQB-P, MPQ4425AGQB-AEC1-P, MPQ4425MGQB-AEC1-P, MPQ7235GQBE-AEC1-P, MP7235GQBE-P, MP7235GQBE-Z
- Cut Tape (CT) format: MP4425AGQB-P, MP4425AGQB-Z
- Cut Tape & Digi-Reel®: MPQ7235GQBE-AEC1-Z
Inventory Availability: MPQ7235GQBE-AEC1-Z offers the highest inventory level (15,300 pcs), followed by MP4425AGQB-Z (2,813 pcs) and MP7235GQBE-Z (5,858 pcs).
Product Status: All listed substitutes maintain active product status, ensuring continued manufacturer support and availability.
Regulatory Compliance: All parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements.

Selection Logic:

For direct replacement in existing designs using Tape & Reel packaging, MPQ4425AGQB-P or MPQ4425AGQB-AEC1-P are functionally identical to the main part.
For high-volume applications requiring maximum inventory, MPQ7235GQBE-AEC1-Z provides superior stock levels while maintaining full electrical and mechanical equivalence.
For applications not requiring automotive qualification, MP7235GQBE-P or MP7235GQBE-Z offer equivalent functionality with alternative base product designations.
Cut Tape variants (MP4425AGQB-P, MP4425AGQB-Z) are suitable for applications where reel packaging is not required.

Frequently Asked Questions (FAQ)

Q1: Can MPQ4425AGQB-P be used as a direct replacement for MPQ4425AGQB-Z?

A: Yes. Both parts are electrically and mechanically identical, with matching supply voltage (4V–36V), output current (1.5A), switching frequency (2.2MHz), operating temperature range (-40°C to 125°C), and 13-QFN (2.5x3) package. The primary difference is packaging format: MPQ4425AGQB-Z is supplied in Tape & Reel, while MPQ4425AGQB-P is also Tape & Reel. Both maintain AEC-Q100 automotive qualification.

Q2: What is the difference between MPQ4425 and MP4425 base product designations?

A: Both designations refer to functionally equivalent LED driver regulators with identical electrical specifications. The difference lies in packaging format and supplier designation. MP4425AGQB variants are available in Cut Tape format, while MPQ4425AGQB variants are supplied in Tape & Reel. All maintain the same 13-QFN (2.5x3) package footprint and electrical performance.

Q3: Are MPQ7235GQBE parts suitable replacements for MPQ4425AGQB?

A: Yes. MPQ7235GQBE-AEC1-P and MPQ7235GQBE-AEC1-Z are parametric equivalents with identical electrical specifications: 4V–36V supply range, 1.5A output current, 2.2MHz frequency, PWM dimming, and -40°C to 125°C operating temperature. Both maintain AEC-Q100 automotive qualification and 13-QFN (2.5x3) package compatibility. The MPQ7235 series is designated as a synchronous buck regulator with automotive-grade performance.

Q4: Can non-automotive-qualified parts (MP7235GQBE-P, MP7235GQBE-Z) be used in automotive applications?

A: No. MP7235GQBE-P and MP7235GQBE-Z do not carry AEC-Q100 qualification or automotive grade designation. These parts are suitable only for non-automotive applications. For automotive designs, use only AEC-Q100-qualified variants: MPQ4425AGQB-Z, MPQ4425AGQB-P, MPQ4425AGQB-AEC1-P, MPQ4425MGQB-AEC1-P, MPQ4425MGQB-AEC1-Z, MP4425AGQB-P, MP4425AGQB-Z, MPQ7235GQBE-AEC1-P, or MPQ7235GQBE-AEC1-Z.

Q5: What packaging options are available for substitute parts?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape (CT), and Cut Tape with Digi-Reel® (CT & Digi-Reel®). Tape & Reel is standard for high-volume automated assembly. Cut Tape is suitable for lower-volume or manual assembly processes. Digi-Reel® combines cut tape with automated reel handling. All formats use the same 13-QFN (2.5x3) component footprint.

Q6: Which substitute part offers the best inventory availability?

A: MPQ7235GQBE-AEC1-Z provides the highest inventory level at 15,300 pcs, followed by MP4425AGQB-Z at 2,813 pcs and MP7235GQBE-Z at 5,858 pcs. For immediate availability in automotive-qualified applications, MPQ7235GQBE-AEC1-Z is the optimal choice.

Q7: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for both consumer and automotive applications.

Q8: Do substitute parts maintain the same thermal and electrical performance as the main part?

A: Yes. All substitute parts operate within the identical temperature range (-40°C to 125°C junction temperature), maintain the same 1.5A output current capability, and operate at 2.2MHz switching frequency. The 13-PowerVQFN package provides equivalent thermal characteristics across all variants.

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