MP4425AGQB-Z Equivalent & Substitute Parts

Part Overview

The MP4425AGQB-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 1.5A output current rating. The part is housed in a 13-QFN (2.5x3) surface mount package and operates across a 4V to 36V supply voltage range with an operating temperature range of -40°C to 125°C. The device carries automotive-grade qualification (AEC-Q100) and maintains active product status with 2813 units currently in stock.

Equivalent and substitute parts are identified to address supply chain continuity, packaging preferences, inventory availability, and application-specific requirements while maintaining electrical and mechanical compatibility within the specified parameter constraints.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP4425AGQB-Z
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)
Grade	Automotive
Qualification	AEC-Q100
Package / Case	13-PowerVQFN
Supplier Device Package	13-QFN (2.5x3)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the MP4425AGQB-Z are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical or functionally equivalent electrical specifications across all critical parameters: supply voltage range (4V to 36V), output current (1.5A), switching frequency (2.2MHz), PWM dimming capability, operating temperature range (-40°C to 125°C), package type (13-QFN 2.5x3), and automotive-grade qualification (AEC-Q100). These parts differ only in packaging format (Cut Tape vs. Tape & Reel) or internal qualification designations (AEC1 suffix variants).

Similar Parts share the same functional category (LED Driver IC, DC DC Regulator, Step-Down Buck topology, PWM dimming) but deviate in one or more critical electrical parameters such as supply voltage range, output current rating, switching frequency, or package dimensions. These parts are suitable for applications where parameter deviations are acceptable.

The key parameters determining substitution eligibility are:

Supply voltage range (4V to 36V)
Output current capability (1.5A)
Switching frequency (2.2MHz)
PWM dimming functionality
Package type (13-QFN 2.5x3)
Automotive qualification (AEC-Q100)
Operating temperature range (-40°C to 125°C)

Parameter Comparison

Part Number	Manufacturer	Supply Voltage (Min-Max)	Output Current	Frequency	Dimming	Package	Grade	AEC-Q100	Packaging Format	Inventory
MP4425AGQB-Z	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Cut Tape (CT)	2813 Pcs
MP4425AGQB-P	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Cut Tape (CT)	1180 Pcs
MP7235GQBE-P	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Not Specified	No	Tape & Reel (TR)	2562 Pcs
MP7235GQBE-Z	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Not Specified	No	Tape & Reel (TR)	5858 Pcs
MPQ4425AGQB-AEC1-P	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Tape & Reel (TR)	1651 Pcs
MPQ4425AGQB-AEC1-Z	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Tape & Reel (TR)	1079 Pcs
MPQ4425AGQB-P	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Tape & Reel (TR)	1451 Pcs
MPQ7235GQBE-AEC1-P	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Tape & Reel (TR)	2118 Pcs
MPQ7235GQBE-AEC1-Z	Monolithic Power Systems Inc.	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	Automotive	Yes	Cut Tape (CT) & Digi-Reel®	15300 Pcs
LED2000PUR	STMicroelectronics	3V - 18V	3A	850kHz	PWM	8-VFQFPN (4x4)	Not Specified	No	Cut Tape (CT) & Digi-Reel®	3816 Pcs
LM3553SDX/NOPB	Texas Instruments	2.7V - 5.5V	1.2A (Flash)	1.2MHz	I2C	12-WSON (3x3)	Not Specified	No	Tape & Reel (TR)	1960 Pcs

Engineering Selection Recommendations

Parametric Equivalent Selection (Recommended for Direct Substitution)

The following parts maintain full electrical and mechanical compatibility with the MP4425AGQB-Z and are suitable for direct substitution in automotive-grade applications:

MP4425AGQB-P: Identical electrical specifications and automotive qualification. Differs only in packaging format (Cut Tape). Suitable where Cut Tape packaging is preferred. Inventory: 1180 units.
MPQ4425AGQB-AEC1-P and MPQ4425AGQB-AEC1-Z: Maintain all critical electrical parameters and automotive AEC-Q100 qualification. Available in Tape & Reel format. MPQ4425AGQB-AEC1-Z offers highest inventory availability (1079 units) among AEC1-qualified variants.
MPQ4425AGQB-P: Automotive-grade qualified equivalent with Tape & Reel packaging. Inventory: 1451 units.
MPQ7235GQBE-AEC1-Z: Highest inventory availability (15300 units) among all parametric equivalents. Maintains full electrical compatibility and automotive AEC-Q100 qualification. Available in Cut Tape & Digi-Reel® format.
MPQ7235GQBE-AEC1-P: Automotive-grade qualified with Tape & Reel packaging. Inventory: 2118 units.

Non-Automotive Grade Alternatives (Conditional Use)

MP7235GQBE-P and MP7235GQBE-Z: Maintain identical electrical specifications but lack automotive-grade designation and AEC-Q100 qualification. Suitable only for non-automotive applications. MP7235GQBE-Z offers higher inventory (5858 units).

Similar Parts (Parameter Deviations)

LED2000PUR (STMicroelectronics): Deviates in supply voltage range (3V-18V vs. 4V-36V), output current (3A vs. 1.5A), switching frequency (850kHz vs. 2.2MHz), and package type (8-VFQFPN vs. 13-QFN). Not suitable for direct substitution in applications requiring 36V supply capability or 1.5A current rating.
LM3553SDX/NOPB (Texas Instruments): Significant deviations in supply voltage (2.7V-5.5V), output current (1.2A Flash), switching frequency (1.2MHz), dimming method (I2C vs. PWM), and package type (12-WSON). Not suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can MP4425AGQB-P be used as a direct replacement for MP4425AGQB-Z?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (4V-36V supply, 1.5A output, 2.2MHz frequency, PWM dimming) and automotive AEC-Q100 qualification. The only difference is packaging format: MP4425AGQB-Z is supplied in Cut Tape (CT) while MP4425AGQB-P is also Cut Tape. Both are suitable for direct substitution in automotive applications.

Q: What is the difference between MP4425AGQB-Z and MPQ4425AGQB-AEC1-Z?

A: Both parts maintain identical electrical specifications and automotive AEC-Q100 qualification. The primary difference is packaging format: MP4425AGQB-Z uses Cut Tape (CT) while MPQ4425AGQB-AEC1-Z uses Tape & Reel (TR). The "MPQ" prefix and "AEC1" designation indicate a qualified variant. Both are suitable for direct substitution where packaging format is compatible with assembly equipment.

Q: Can MP7235GQBE-Z be used in automotive applications?

A: MP7235GQBE-Z maintains identical electrical specifications to MP4425AGQB-Z but lacks automotive-grade designation and AEC-Q100 qualification. Use in automotive applications is not recommended. For automotive applications, select MPQ7235GQBE-AEC1-Z or MPQ7235GQBE-AEC1-P instead.

Q: Why is MPQ7235GQBE-AEC1-Z recommended despite the different base part number?

A: MPQ7235GQBE-AEC1-Z is a parametric equivalent that maintains all critical electrical parameters (4V-36V supply, 1.5A output, 2.2MHz frequency, PWM dimming, 13-QFN package) and automotive AEC-Q100 qualification. The different base part number reflects internal design or qualification variants but does not affect functional compatibility. The part offers the highest inventory availability (15300 units) among all qualified substitutes.

Q: Is the 13-QFN (2.5x3) package identical across all parametric equivalents?

A: Yes. All parametric equivalent parts use the 13-PowerVQFN package type with 13-QFN (2.5x3) supplier device package specification. Package dimensions, pin count, and footprint are identical, ensuring PCB layout compatibility without modification.

Q: What is the significance of the "Z" and "P" suffixes in part numbers?

A: The "Z" and "P" suffixes indicate packaging format designations. "Z" typically denotes Cut Tape (CT) or Cut Tape & Digi-Reel® format, while "P" denotes Tape & Reel (TR) format. Both formats contain identical components; the difference is in supply reel configuration for automated assembly equipment.

Q: Can LED2000PUR be used as a substitute for MP4425AGQB-Z?

A: No. LED2000PUR is classified as a similar part with significant parameter deviations: supply voltage range (3V-18V vs. 4V-36V), output current (3A vs. 1.5A), switching frequency (850kHz vs. 2.2MHz), and package type (8-VFQFPN vs. 13-QFN). It is not suitable for direct substitution in applications requiring the full 36V supply capability or 1.5A current rating of the MP4425AGQB-Z.

Q: What is the difference between AEC-Q100 qualified and non-qualified variants?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards established by the Automotive Electronics Council. Qualified parts (such as MP4425AGQB-Z, MPQ4425AGQB-AEC1-Z, and MPQ7235GQBE-AEC1-Z) are suitable for automotive applications. Non-qualified variants (such as MP7235GQBE-Z) lack this certification and should not be used in automotive designs without explicit engineering approval.

Q: Which substitute part offers the best inventory availability?

A: MPQ7235GQBE-AEC1-Z offers the highest inventory availability with 15300 units in stock. This part maintains full parametric equivalence and automotive AEC-Q100 qualification, making it suitable for high-volume production requirements.

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