MP3428GL-P Equivalent & Substitute Parts

Part Overview

The MP3428GL-P is a boost switching regulator IC manufactured by Monolithic Power Systems Inc., designed for step-up voltage conversion applications. This device delivers 17A switch current with adjustable positive output configuration, supporting input voltage ranges from 3V to 20V and output voltage ranges from 3V to 20V. The part is classified as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity.

Key Parameters

Parameter	MP3428GL-P
Manufacturer	Monolithic Power Systems Inc.
Function	Step-Up (Boost)
Output Configuration	Positive Adjustable
Number of Outputs	1
Voltage - Input (Min/Max)	3V / 20V
Voltage - Output (Min/Max)	3V / 20V
Current - Output	17A (Switch)
Frequency - Switching	450kHz ~ 690kHz
Synchronous Rectifier	Both
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	22-PowerVFQFN (3x4)
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MP3428GL-P is determined by the following critical parameters:

Topology: Boost switching regulator configuration
Output Type: Adjustable positive voltage output
Number of Outputs: Single output
Synchronous Rectification: Presence of integrated synchronous rectifier
Mounting Type: Surface mount technology
Compliance: ROHS3 compliance and EAR99 classification

The TPS61088RHLT qualifies as a substitute based on matching topology (boost), output configuration (positive adjustable), single output design, and synchronous rectifier integration. Both devices operate as step-up converters with adjustable output voltage and surface mount packaging. However, electrical performance parameters differ, requiring design verification for specific application requirements.

Parameter Comparison

Parameter	MP3428GL-P	TPS61088RHLT	Compatibility Notes
Manufacturer	Monolithic Power Systems Inc.	Texas Instruments	Different manufacturers
Function	Step-Up	Step-Up	Matched
Output Configuration	Positive Adjustable	Positive Adjustable	Matched
Number of Outputs	1	1	Matched
Voltage - Input (Min/Max)	3V / 20V	2.7V / 12V	TPS61088RHLT has narrower input range
Voltage - Output (Min/Max)	3V / 20V	4.5V / 12.6V	TPS61088RHLT has narrower output range
Current - Output	17A (Switch)	10A	MP3428GL-P delivers higher current
Frequency - Switching	450kHz ~ 690kHz	200kHz ~ 2.2MHz	TPS61088RHLT has wider frequency range
Synchronous Rectifier	Both	Yes	Both include synchronous rectification
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	MP3428GL-P supports higher junction temperature
Package / Case	22-PowerVFQFN (3x4)	20-VFQFN Exposed Pad (4.6x4.5)	Different package sizes and pin counts
Product Status	Not For New Designs	Active	TPS61088RHLT actively supported
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched

Engineering Selection Recommendations

The TPS61088RHLT serves as a functional substitute for the MP3428GL-P in boost regulator applications where the following conditions are satisfied:

Application input voltage range operates within 2.7V to 12V
Application output voltage range operates within 4.5V to 12.6V
Output current requirement does not exceed 10A
Operating temperature range does not exceed -40°C to 85°C

Both devices maintain ROHS3 compliance and EAR99 classification, ensuring regulatory alignment. The TPS61088RHLT is classified as Active product status, providing ongoing manufacturer support and availability compared to the MP3428GL-P Not For New Designs status.

Design migration from MP3428GL-P to TPS61088RHLT requires PCB layout modification due to different package geometries (22-PowerVFQFN versus 20-VFQFN) and pin count differences. Firmware or control circuit adjustments may be necessary to accommodate the TPS61088RHLT's different switching frequency range and output voltage limits.

Frequently Asked Questions (FAQ)

Q: Can TPS61088RHLT directly replace MP3428GL-P in existing designs?

A: Direct pin-for-pin replacement is not possible. The MP3428GL-P uses 22-PowerVFQFN packaging while TPS61088RHLT uses 20-VFQFN packaging with different pin assignments. PCB redesign is required.

Q: What are the primary electrical differences between these devices?

A: The MP3428GL-P supports higher output current (17A versus 10A), wider input voltage range (3V-20V versus 2.7V-12V), and higher operating junction temperature (125°C versus 85°C). The TPS61088RHLT offers wider switching frequency adjustment range (200kHz-2.2MHz versus 450kHz-690kHz).

Q: Is the TPS61088RHLT suitable for applications requiring 17A output current?

A: No. The TPS61088RHLT maximum output current is 10A. Applications requiring 17A output current cannot use this substitute.

Q: Do both devices require identical external component values?

A: No. Different switching frequencies, output voltage ranges, and current ratings necessitate recalculation of inductor, capacitor, and feedback resistor values. Consult respective device datasheets for design calculations.

Q: Are there compliance or certification differences?

A: Both devices are ROHS3 compliant and classified as EAR99. No compliance barriers exist for substitution in regulated applications.

Q: What packaging considerations apply to this substitution?

A: The MP3428GL-P 22-PowerVFQFN package (3x4mm) differs from the TPS61088RHLT 20-VFQFN package (4.6x4.5mm). Board space requirements and thermal management characteristics may differ. Thermal pad design should be reviewed for the TPS61088RHLT.

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