MP3204DJ-LF-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3204DJ-LF-Z is an 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 21V output at 350mA switch current with integrated PWM and Analog dimming capabilities. The part is actively produced and ROHS3 compliant, designed for backlight applications in consumer electronics.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining functional compatibility for the intended application.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP3204DJ-LF-Z
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	2.5V
Voltage - Supply (Max)	6V
Voltage - Output	21V
Current - Output / Channel	350mA (Switch)
Frequency	1.3MHz
Dimming	Analog, PWM
Package / Case	SOT-23-6 Thin, TSOT-23-6
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP3204DJ-LF-Z are categorized based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Number of Outputs: 1
Supply Voltage Range: 2.5V to 6V input capability
Output Voltage: 21V or higher
Current Capability: 350mA or greater switch current
Dimming Control: Analog and/or PWM support
Operating Temperature: -40°C to 85°C minimum
Compliance: ROHS3 Compliant

Packaging Consideration: The MP3204DJ-LF-Z uses TSOT-23-6 package. Substitutes may use alternative surface-mount packages (TSOT-23-6, U-DFN, 8-HSON, 12-DSBGA, SOT-89-5) provided the electrical specifications align with application requirements.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Voltage (Min-Max)	Output Voltage	Current Output	Frequency	Dimming	Package	Temp Range	Status
MP3204DJ-LF-Z	Monolithic Power Systems	Step-Up (Boost)	2.5V - 6V	21V	350mA	1.3MHz	Analog, PWM	TSOT-23-6	-40°C ~ 85°C	Active
MP3204DJ-LF-P	Monolithic Power Systems	Step-Up (Boost)	2.5V - 6V	21V	350mA	1.3MHz	Analog, PWM	TSOT-23-6	-40°C ~ 85°C	Active
AP5724FDCG-7	Diodes Incorporated	Step-Up (Boost)	2.7V - 5.5V	Not Specified	750mA	1.2MHz	PWM	U-DFN2020-6	-40°C ~ 85°C	Active
AP5726FDCG-7	Diodes Incorporated	Step-Up (Boost)	2.7V - 5.5V	Not Specified	750mA	1.2MHz	PWM	U-DFN2020-6	-40°C ~ 85°C	Active
BD6072HFN-TR	Rohm Semiconductor	Step-Up (Boost)	2.7V - 5.5V	18V	35mA	1MHz	PWM	8-HSON	-30°C ~ 85°C	Not For New Designs
BD60A60NUX-TR	Rohm Semiconductor	Step-Up (Boost)	2.7V - 5.5V	Not Specified	30mA	600kHz	PWM	8-UFDFN	-40°C ~ 85°C	Active
IS31LT3360-SDLS4-TR	Lumissil Microsystems	Step-Down (Buck)	6V - 40V	40V	1.2A	1MHz	Analog, PWM	SOT-89-5	-40°C ~ 125°C	Active
LM3508TLX/NOPB	Texas Instruments	Step-Up (Boost)	2.7V - 5.5V	17.5V	30mA	850kHz	PWM	9-DSBGA	-30°C ~ 85°C	Active
LM3530UME-25A/NOPB	Texas Instruments	Step-Up (Boost)	2.7V - 5.5V	40V	30mA	500kHz	PWM	12-DSBGA	-40°C ~ 85°C	Active
LM3530UME-40/NOPB	Texas Instruments	Step-Up (Boost)	2.7V - 5.5V	40V	30mA	500kHz	PWM	12-DSBGA	-40°C ~ 85°C	Active
LM3553SDX/NOPB	Texas Instruments	Step-Up (Boost)	2.7V - 5.5V	Not Specified	1.2A (Flash)	1.2MHz	I2C	12-WSON	-30°C ~ 85°C	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: MP3204DJ-LF-P is the direct equivalent to MP3204DJ-LF-Z, differing only in packaging format (Tape & Reel vs. standard packaging). Both maintain identical electrical specifications and are Active products with ROHS3 compliance.

Higher Current Capability Substitutes: AP5724FDCG-7 and AP5726FDCG-7 (Diodes Incorporated) provide 750mA switch current, exceeding the MP3204DJ-LF-Z specification of 350mA. These parts maintain Step-Up topology and compatible supply voltage ranges (2.7V - 5.5V). Both are Active products with ROHS3 compliance. Package differs to U-DFN2020-6.

Lower Current Alternatives: BD60A60NUX-TR (Rohm Semiconductor) and LM3508TLX/NOPB (Texas Instruments) deliver reduced current capability (30mA) but maintain Step-Up topology and compatible supply voltage ranges. Both are Active products with ROHS3 compliance. These are suitable only for applications with lower current requirements.

Not Recommended for New Designs: BD6072HFN-TR (Rohm Semiconductor) carries "Not For New Designs" status and should not be selected for new development projects.

Topology Mismatch: IS31LT3360-SDLS4-TR employs Step-Down (Buck) topology with 6V - 40V supply range, fundamentally different from the MP3204DJ-LF-Z Step-Up architecture. This part is not functionally equivalent.

Dimming Control Differences: LM3553SDX/NOPB uses I2C dimming control rather than Analog/PWM, requiring different circuit integration and firmware support.

Frequently Asked Questions (FAQ)

Q: Can MP3204DJ-LF-P be used as a direct replacement for MP3204DJ-LF-Z? A: Yes. MP3204DJ-LF-P is electrically identical to MP3204DJ-LF-Z. The difference is packaging format: MP3204DJ-LF-P is supplied in Tape & Reel format while MP3204DJ-LF-Z uses standard packaging. Both are Active products with ROHS3 compliance and identical electrical specifications.

Q: What is the key difference between the MP3204DJ-LF-Z and AP5724FDCG-7? A: The primary difference is switch current capability: MP3204DJ-LF-Z delivers 350mA while AP5724FDCG-7 delivers 750mA. Both use Step-Up topology and support compatible supply voltage ranges (2.5V - 6V vs. 2.7V - 5.5V). Package format differs (TSOT-23-6 vs. U-DFN2020-6). AP5724FDCG-7 supports PWM dimming only, lacking Analog dimming.

Q: Why is BD6072HFN-TR not recommended? A: BD6072HFN-TR carries "Not For New Designs" product status. While it maintains Step-Up topology and compatible supply voltage, its obsolescence trajectory makes it unsuitable for new development projects.

Q: Can IS31LT3360-SDLS4-TR replace the MP3204DJ-LF-Z? A: No. IS31LT3360-SDLS4-TR uses Step-Down (Buck) topology, fundamentally different from the MP3204DJ-LF-Z Step-Up architecture. Supply voltage ranges are incompatible (6V - 40V vs. 2.5V - 6V). This part is not functionally equivalent.

Q: What are the package considerations when selecting a substitute? A: The MP3204DJ-LF-Z uses TSOT-23-6 package. Substitutes may use alternative surface-mount packages (U-DFN, 8-HSON, 12-DSBGA, SOT-89-5). Package selection depends on PCB layout constraints and thermal management requirements. Verify footprint compatibility with your circuit board design before implementation.

Q: Which substitute provides the highest current capability? A: AP5724FDCG-7 and AP5726FDCG-7 both deliver 750mA switch current, the highest among available substitutes. These are suitable for applications requiring current capacity exceeding the MP3204DJ-LF-Z specification of 350mA.

Q: Are all recommended substitutes ROHS3 compliant? A: Yes. All Active status parts listed (MP3204DJ-LF-P, AP5724FDCG-7, AP5726FDCG-7, BD60A60NUX-TR, LM3508TLX/NOPB, LM3530UME-25A/NOPB, LM3530UME-40/NOPB, LM3553SDX/NOPB, and IS31LT3360-SDLS4-TR) are ROHS3 compliant. BD6072HFN-TR is also ROHS3 compliant but carries "Not For New Designs" status.

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