MP4425MGQB-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4425MGQB-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 across a 4V to 36V input supply range. The part is housed in a 13-QFN (2.5x3) surface mount package and operates across the automotive temperature range of -40°C to 125°C (TJ).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing flexibility, or when design requirements necessitate parts with enhanced automotive qualification levels such as AEC-Q100 certification.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Internal Switch(s)	Yes
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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Grade	Automotive

Substitute Part Grouping Explanation

Substitution eligibility for the MP4425MGQB-Z is determined by strict alignment across the following critical parameters:

DC-DC regulator topology (step-down buck configuration)
Single output channel
Input voltage range: 4V to 36V
Output current capability: 1.5A per channel
Switching frequency: 2.2MHz
PWM dimming functionality
Operating temperature range: -40°C to 125°C (TJ)
Surface mount package: 13-QFN (2.5x3) form factor
Automotive grade classification
RoHS3 compliance and REACH unaffected status

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in packaging format (Tape & Reel vs. Cut Tape) and automotive qualification levels (standard automotive vs. AEC-Q100) are permitted within the substitution matrix, as these do not alter functional performance or thermal characteristics.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Voltage (Min-Max)	Output Current	Frequency	Dimming	Package	Operating Temp	Grade	Qualification	Packaging Format
MP4425MGQB-Z	MPS	Step-Down (Buck)	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	-40°C ~ 125°C	Automotive	—	Tape & Reel (TR)
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 (CT)
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 (CT)
MP7235GQBE-P	MPS	Step-Down (Buck)	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	-40°C ~ 125°C	—	—	Tape & Reel (TR)
MP7235GQBE-Z	MPS	Step-Down (Buck)	4V - 36V	1.5A	2.2MHz	PWM	13-QFN (2.5x3)	-40°C ~ 125°C	—	—	Tape & Reel (TR)
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 (TR)
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 (TR)
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 (TR)
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 (TR)
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 (TR)
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 (CT) & Digi-Reel®

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full compliance with RoHS3 and REACH requirements. Selection between equivalent options should be based on the following criteria:

Packaging Format Considerations: The MP4425MGQB-Z is supplied in Tape & Reel format. Substitutes available in identical Tape & Reel packaging include MP7235GQBE-P, MP7235GQBE-Z, MPQ4425AGQB-AEC1-P, MPQ4425AGQB-P, MPQ4425MGQB-AEC1-P, MPQ4425MGQB-AEC1-Z, MPQ7235GQBE-AEC1-P, and MPQ7235GQBE-AEC1-Z. Cut Tape alternatives are available as MP4425AGQB-P and MP4425AGQB-Z.

Automotive Qualification: The primary part carries automotive grade classification. Enhanced AEC-Q100 qualification is available across multiple substitute options (MP4425AGQB-P, MP4425AGQB-Z, MPQ4425AGQB-AEC1-P, MPQ4425AGQB-P, MPQ4425MGQB-AEC1-P, MPQ4425MGQB-AEC1-Z, MPQ7235GQBE-AEC1-P, MPQ7235GQBE-AEC1-Z), providing additional assurance for mission-critical automotive applications.

Inventory Availability: MPQ7235GQBE-AEC1-Z offers the highest inventory level at 15,300 units. MP7235GQBE-Z provides 5,858 units, while MP4425AGQB-Z maintains 2,813 units in stock.

Frequently Asked Questions (FAQ)

Q: Can MP4425AGQB-P be used as a direct replacement for MP4425MGQB-Z?

A: Yes. Both parts share identical electrical specifications (4V-36V input, 1.5A output, 2.2MHz frequency, PWM dimming, -40°C to 125°C operating range) and the same 13-QFN (2.5x3) package. The primary difference is packaging format: MP4425AGQB-P is supplied in Cut Tape while MP4425MGQB-Z is Tape & Reel. MP4425AGQB-P also includes AEC-Q100 qualification, which exceeds the base automotive grade of the primary part.

Q: What is the difference between MP7235GQBE-Z and MP4425MGQB-Z?

A: Both parts are functionally equivalent across all critical electrical parameters and share the same 13-QFN (2.5x3) package. The MP7235GQBE-Z does not carry an explicit automotive grade designation in the provided specifications, whereas MP4425MGQB-Z is classified as automotive grade. Both operate across the same temperature range and supply voltage specifications.

Q: Are AEC-Q100 qualified parts (such as MPQ4425MGQB-AEC1-Z) compatible with designs specified for MP4425MGQB-Z?

A: Yes. AEC-Q100 qualification represents an enhanced level of automotive reliability testing and does not alter electrical or mechanical compatibility. Parts with AEC-Q100 certification meet or exceed the performance requirements of base automotive grade parts and are fully interchangeable from a functional standpoint.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical specifications, thermal performance, and functional behavior remain identical regardless of whether a part is supplied in Tape & Reel or Cut Tape format.

Q: Can I substitute MP7235GQBE-P for MP4425MGQB-Z in a production design?

A: Yes, from an electrical and mechanical standpoint. Both parts maintain identical specifications across supply voltage (4V-36V), output current (1.5A), switching frequency (2.2MHz), PWM dimming, operating temperature (-40°C to 125°C), and package form factor (13-QFN 2.5x3). However, MP7235GQBE-P does not carry an explicit automotive grade designation in the provided data, whereas MP4425MGQB-Z is automotive grade. Design validation should confirm suitability for the intended application environment.

Q: Which substitute part offers the best availability?

A: MPQ7235GQBE-AEC1-Z provides the highest inventory level at 15,300 units in stock. This part combines full electrical equivalence, AEC-Q100 automotive qualification, and Tape & Reel packaging format identical to the primary part.

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