MP3301GJ-Z Equivalent & Substitute Parts

Part Overview

The MP3301GJ-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-up (boost) topology, delivering 1A switch current at 36V output from a 2.5V to 6V supply. The IC integrates PWM and analog dimming control, operating at 1.3MHz switching frequency in a compact TSOT-23-5 surface mount package.

The MP3301GJ-Z maintains active product status with 23,100 units in current inventory. Substitute parts are identified when equivalent electrical performance, output topology, dimming capability, and package compatibility align with application requirements while maintaining compliance certifications.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Part Number	MP3301GJ-Z
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage Supply Range	2.5V to 6V
Voltage Output	36V
Current Output / Channel	1A (Switch)
Switching Frequency	1.3MHz
Dimming Control	Analog, PWM
Operating Temperature	-40°C to 125°C (TJ)
Package / Case	SOT-23-5 Thin, TSOT-23-5
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP3301GJ-Z are selected based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Topology: Step-Up (Boost) configuration for voltage elevation from low input supplies
Output Voltage: Capable of reaching 36V or higher output levels
Dimming Control: PWM and/or analog dimming support for LED brightness adjustment
Current Rating: 1A or greater switch current capacity
Supply Voltage Range: Minimum 2.5V input compatibility
Package Compatibility: Surface mount packages suitable for board integration
Compliance: ROHS3 compliance and active product status

Grouping Logic:

Substitutes are organized into two functional categories:

Direct Topology Matches (Step-Up/Boost Only): Parts maintaining boost-only topology with PWM dimming, optimized for LED driver applications with similar voltage and current specifications.
Multi-Topology Capable Parts: Devices supporting multiple topologies (boost, buck, SEPIC, flyback) that can operate in boost mode with equivalent or superior performance characteristics.

Parts with step-down (buck) topology, I2C-only dimming without PWM support, or significantly different current ratings are listed but noted for application-specific evaluation.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Voltage (Min-Max)	Output Voltage	Current Output (Switch)	Dimming	Frequency	Package	Product Status	RoHS3
MP3301GJ-Z	Monolithic Power Systems	Step-Up (Boost)	2.5V - 6V	36V	1A	Analog, PWM	1.3MHz	TSOT-23-5	Active	Yes
LM3410XMF/NOPB	Texas Instruments	SEPIC, Step-Up (Boost)	2.7V - 5.5V	3V - 24V	2.8A	PWM	1.6MHz	SOT-23-5	Active	Yes
MIC3223YTSE	Microchip Technology	Step-Up (Boost)	4.5V - 20V	37V	4.6A	PWM	1MHz	16-TSSOP-EP	Active	Yes
LT3477IFE#PBF	Analog Devices Inc.	Flyback, SEPIC, Buck, Boost	2.5V - 25V	Variable	3A	PWM	200kHz - 4.6MHz	20-TSSOP-EP	Active	Yes
LM3555TLX/NOPB	National Semiconductor	Step-Up (Boost)	2.5V - 5.5V	9.96V	500mA (Flash)	I2C	2MHz	12-DSBGA	Active	Not Specified
LM3404MR/NOPB	Texas Instruments	Step-Down (Buck)	6V - 42V	40V	1A	PWM	1MHz	8-SO PowerPad	Active	Yes
LM3414MR/NOPB	Texas Instruments	Step-Down (Buck)	4.5V - 42V	Not Specified	1A	Analog, PWM	500kHz	8-SO PowerPad	Active	Yes
LM3556TME/NOPB	Texas Instruments	Step-Up (Boost)	2.5V - 5.5V	Not Specified	1.5A (Flash)	I2C	4MHz	16-DSBGA	Active	Yes
LM3642TLE-LT/NOPB	Texas Instruments	Step-Up (Boost)	2.5V - 5.5V	5V	1.5A (Flash)	I2C	4MHz	9-DSBGA	Active	Yes
MIC2297-38YML-TR	Microchip Technology	Step-Up (Boost)	2.5V - 10V	Not Specified	1.2A	PWM	600kHz	10-MLF (3x3)	Active	Yes
LM3555TLE/NOPB	Texas Instruments	Step-Up (Boost)	2.5V - 5.5V	9.96V	500mA (Flash)	I2C	2MHz	12-DSBGA	Active	Yes

Engineering Selection Recommendations

Recommended Primary Substitutes (Highest Compatibility):

LM3410XMF/NOPB (Texas Instruments) represents the closest functional equivalent. This device maintains step-up boost topology with SEPIC capability, operates within the 2.7V to 5.5V supply range, supports PWM dimming, and is packaged in SOT-23-5 matching the MP3301GJ-Z footprint. Output voltage range of 3V to 24V accommodates applications requiring lower output levels than the MP3301GJ-Z 36V specification. Switch current of 2.8A exceeds the 1A requirement, providing design margin. ROHS3 compliance and active product status confirm suitability for new designs.

MIC3223YTSE (Microchip Technology) provides step-up boost topology with 37V output capability, closely matching the MP3301GJ-Z 36V specification. Supply voltage range of 4.5V to 20V accommodates higher input supplies than the MP3301GJ-Z. Switch current of 4.6A provides substantial margin above the 1A requirement. PWM dimming support aligns with application needs. 16-TSSOP-EP package differs from TSOT-23-5, requiring PCB layout modification. ROHS3 compliance and active status support production use.

LT3477IFE#PBF (Analog Devices Inc.) offers multi-topology capability including boost operation, supporting 2.5V to 25V input range and 3A switch current. Programmable frequency from 200kHz to 4.6MHz provides flexibility for EMI management. PWM dimming control matches MP3301GJ-Z functionality. 20-TSSOP-EP package requires board redesign. ROHS3 compliance and active status confirm availability.

Secondary Substitutes (Application-Specific):

LM3555TLX/NOPB and LM3555TLE/NOPB (Texas Instruments) maintain boost topology with 2.5V to 5.5V supply compatibility. However, I2C dimming control replaces PWM/analog dimming, requiring firmware modification for brightness adjustment. Output voltage of 9.96V limits applications requiring higher voltage levels. 500mA flash current is insufficient for 1A continuous LED driver applications. 12-DSBGA package necessitates redesign. These parts suit camera flash applications rather than general LED driver replacement.

LM3556TME/NOPB and LM3642TLE-LT/NOPB (Texas Instruments) provide boost topology with 1.5A flash current capability. I2C-only dimming without PWM support requires system integration changes. Output voltage specifications (not specified for LM3556, 5V for LM3642) restrict application scope. BGA packages require specialized assembly. These devices target camera flash and specialized lighting applications.

MIC2297-38YML-TR (Microchip Technology) supports boost topology with 1.2A switch current and PWM dimming. Supply range of 2.5V to 10V accommodates the MP3301GJ-Z input specification. Output voltage not specified in datasheet requires verification for 36V applications. 10-MLF package differs from TSOT-23-5. ROHS3 compliance and active status support production deployment.

Not Recommended for Direct Substitution:

LM3404MR/NOPB and LM3414MR/NOPB (Texas Instruments) employ step-down (buck) topology, fundamentally incompatible with boost applications requiring voltage elevation from low input supplies. These devices are suitable only for applications with higher input voltage requiring step-down regulation.

Frequently Asked Questions (FAQ)

Q: Can LM3410XMF/NOPB directly replace MP3301GJ-Z in existing designs?

A: LM3410XMF/NOPB is pin-compatible in SOT-23-5 package and functionally equivalent for boost LED driver applications. However, output voltage range (3V to 24V) is lower than MP3301GJ-Z (36V). Verify application output voltage requirement before substitution. Switching frequency differs (1.6MHz vs. 1.3MHz), potentially affecting EMI characteristics and component selection.

Q: Why do some substitutes use I2C dimming instead of PWM?

A: I2C dimming (LM3555, LM3556, LM3642 series) provides digital brightness control suitable for camera flash and specialized lighting applications requiring programm

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message