MP3304BDD-LF-Z Equivalent & Substitute Parts

Part Overview

The MP3304BDD-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 1.33A switch current at 24V output with PWM dimming capability. The part is actively produced and ROHS3 compliant, designed for backlight applications in surface-mount 8-QFN (2x3) packaging.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or specific application requirements that permit parameter variation within defined electrical and mechanical tolerances.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Part Number	MP3304BDD-LF-Z
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage Supply Range	3V to 6V
Voltage Output	24V
Current Output / Channel	1.33A (Switch)
Switching Frequency	2.2MHz
Dimming Method	PWM
Operating Temperature	-40°C to 85°C
Package / Case	8-TFDFN Exposed Pad
Supplier Device Package	8-QFN (2x3)
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MP3304BDD-LF-Z are classified into two categories based on parametric equivalence and manufacturer recommendation status:

Parametric Equivalents share identical or functionally equivalent electrical specifications within the following critical parameters:

DC-DC Regulator topology (Step-Up/Boost)
Single output configuration
Supply voltage range compatibility (3V to 6V minimum)
Output voltage capability (24V or higher)
Switch current rating (1.33A or higher)
PWM dimming capability
Operating temperature range (-40°C to 85°C minimum)
Surface-mount packaging with exposed pad
ROHS3 compliance

Manufacturer Recommended Alternatives are selected based on functional equivalence in LED driver applications with PWM dimming, though they may differ in package type, current rating, or output voltage specification. These parts are qualified for backlight applications and maintain active product status with appropriate compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Voltage (Min-Max)	Output Voltage	Current Output	Frequency	Dimming	Package	Product Status	Operating Temp
MP3304BDD-LF-Z	Monolithic Power Systems	Step-Up (Boost)	3V - 6V	24V	1.33A (Switch)	2.2MHz	PWM	8-QFN (2x3)	Active	-40°C to 85°C
MP3304BDD-LF-P	Monolithic Power Systems	Step-Up (Boost)	3V - 6V	24V	1.33A (Switch)	2.2MHz	PWM	8-QFN (2x3)	Active	-40°C to 85°C
MP3304CDD-LF-P	Monolithic Power Systems	Step-Up (Boost)	3V - 6V	18V	1.33A (Switch)	2.2MHz	PWM	8-QFN (2x3)	Not For New Designs	-40°C to 85°C
MP3304CDD-LF-Z	Monolithic Power Systems	Step-Up (Boost)	3V - 6V	18V	1.33A (Switch)	2.2MHz	PWM	8-QFN (2x3)	Not For New Designs	-40°C to 85°C
AP3031KTR-G1	Diodes Incorporated	Step-Up (Boost)	2.7V - 16V	Not Specified	1.4A (Switch)	1MHz	PWM	TSOT-23-6	Active	-40°C to 85°C
LM3530UME-25A/NOPB	Texas Instruments	Step-Up (Boost)	2.7V - 5.5V	40V	30mA	500kHz	PWM	12-DSBGA	Active	-40°C to 85°C
LM3565TLX/NOPB	Texas Instruments	Step-Up (Boost)	2.5V - 5.5V	5.5V - 8.5V	930mA (Flash)	4MHz	PWM	16-DSBGA (2.5x2.12)	Active	-30°C to 85°C
LM3642TLX-LT/NOPB	Texas Instruments	Step-Up (Boost)	2.5V - 5.5V	5V	1.5A (Flash)	4MHz	I2C	9-DSBGA (1.6x1.6)	Active	-40°C to 85°C
A8513KLYTR-T	Allegro MicroSystems	SEPIC, Step-Up (Boost)	4.5V - 40V	Not Specified	150mA	2MHz	PWM	10-MSOP-EP	Active	-40°C to 125°C
LTC3490ES8#PBF	Analog Devices Inc.	Step-Up (Boost)	1V - 3.2V	2.8V - 4V	350mA	1.3MHz	Analog	8-SO	Active	-40°C to 85°C
MCP1662T-E/OT	Microchip Technology	Step-Up (Boost)	2.4V - 5.5V	32V	200mA	500kHz	PWM	SOT-23-5	Active	-40°C to 125°C

Engineering Selection Recommendations

Direct Parametric Equivalent (Preferred for New Designs):

MP3304BDD-LF-P is the direct parametric equivalent to MP3304BDD-LF-Z. Both parts share identical electrical specifications, topology, and package configuration. The difference between these parts is packaging format: MP3304BDD-LF-Z is supplied in Tape & Reel format, while MP3304BDD-LF-P is supplied in Tape & Reel format with alternative lead finish. Both maintain Active product status and ROHS3 compliance. Selection between these two is determined by supply chain availability and packaging requirements.

Alternative Monolithic Power Systems Parts (Same Family):

MP3304CDD-LF-P and MP3304CDD-LF-Z are members of the same MP3304 base product family but are designated "Not For New Designs." These variants differ in output voltage specification (18V versus 24V). Use of these parts is not recommended for new circuit designs due to their obsolescence trajectory, though they remain available in inventory.

Cross-Manufacturer Alternatives:

Cross-manufacturer substitutes are available from Diodes Incorporated, Texas Instruments, Allegro MicroSystems, Analog Devices Inc., and Microchip Technology. These alternatives maintain Step-Up (Boost) topology and PWM dimming capability but differ in one or more of the following parameters: supply voltage range, output voltage, switch current rating, switching frequency, package type, or operating temperature range. Selection of cross-manufacturer alternatives requires verification that the specific application can tolerate these parameter variations.

AP3031KTR-G1 (Diodes Incorporated) provides higher switch current (1.4A) and wider supply voltage range (2.7V to 16V) but uses TSOT-23-6 packaging instead of 8-QFN.

LM3530UME-25A/NOPB (Texas Instruments) supports higher output voltage (40V) but delivers significantly lower current (30mA) and uses 12-DSBGA packaging.

LM3565TLX/NOPB (Texas Instruments) is optimized for camera flash applications with 930mA flash current but operates at lower output voltage (5.5V to 8.5V) and uses 16-DSBGA packaging.

LM3642TLX-LT/NOPB (Texas Instruments) delivers 1.5A flash current but uses I2C dimming instead of PWM and operates at 5V output.

A8513KLYTR-T (Allegro MicroSystems) supports extended supply voltage range (4.5V to 40V) and automotive qualification (AEC-Q100) but delivers only 150mA current and uses 10-MSOP-EP packaging.

LTC3490ES8#PBF (Analog Devices Inc.) operates at lower supply voltage (1V to 3.2V) with analog dimming but is limited to 350mA current and 2.8V to 4V output.

MCP1662T-E/OT (Microchip Technology) supports 32V output and 200mA current with extended operating temperature (-40°C to 125°C) but uses SOT-23-5 packaging.

Frequently Asked Questions (FAQ)

Q: Can MP3304BDD-LF-P be used as a direct replacement for MP3304BDD-LF-Z?

A: Yes. MP3304BDD-LF-P is a direct parametric equivalent with identical electrical specifications, topology, output voltage, current rating, and operating temperature range. Both parts are in Active product status and ROHS3 compliant. The parts differ only in packaging format designation. Verify that your assembly process accommodates the specific packaging format of the selected part.

Q: Why are MP3304CDD-LF-P and MP3304CDD-LF-Z marked "Not For New Designs"?

A: These variants are designated "Not For New Designs" due to their obsolescence trajectory. While they remain available in inventory, Monolithic Power Systems Inc. does not recommend their use in new circuit designs. These parts differ from the MP3304BDD variants in output voltage specification (18V versus 24V). For new designs, use MP3304BDD-LF-Z or MP3304BDD-LF-P.

Q: Can I use AP3031KTR-G1 as a substitute if my application requires higher supply voltage tolerance?

A: AP3031KTR-G1 supports supply voltage from 2.7V to 16V, which exceeds the MP3304BDD-LF-Z range of 3V to 6V. However, this part delivers 1.4A switch current (versus 1.33A) and uses TSOT-23-6 packaging instead of 8-QFN (2x3). Your circuit board layout and assembly process must accommodate the different package footprint. Output voltage is not specified for AP3031KTR-G1, requiring verification against your application requirements.

Q: What is the key difference between MP3304BDD-LF-Z and LM3530UME-25A/NOPB?

A: Both parts are Step-Up (Boost) regulators with PWM dimming and -40°C to 85°C operating temperature. However, LM3530UME-25A/NOPB delivers only 30mA current (versus 1.33A), supports higher output voltage (40V), operates at lower switching frequency (500kHz), and uses 12-DSBGA packaging. This part is suitable only for low-current backlight applications and requires different PCB layout.

Q: Are there substitutes with automotive qualification?

A: Yes. A8513KLYTR-T from Allegro MicroSystems carries AEC-Q100 automotive qualification and operates across -40°C to 125°C. However, this part delivers only 150mA current, supports SEPIC and Step-Up (Boost) topologies, and uses 10-MSOP-EP packaging. Verify that your application requirements align with the reduced current rating and extended supply voltage range (4.5V to 40V).

Q: Can I substitute LM3642TLX-LT/NOPB for MP3304BDD-LF-Z?

A: LM3642TLX-LT/NOPB is a Step-Up (Boost) regulator with 1.5A flash current and 5V output, but it uses I2C dimming instead of PWM. This part is optimized for camera flash applications rather than backlight. Your application firmware and control circuitry must support I2C dimming protocol. The 9-DSBGA (1.6x1.6) package differs from 8-QFN (2x3), requiring PCB redesign.

Q: What packaging options are available among the substitute parts?

A: Substitute parts use multiple package types: 8-QFN (2x3) for MP3304 family variants, TSOT-23-6 for AP3031KTR-G1, 12-DSBGA for LM3530UME-25A/NOPB, 16-DSBGA for LM3565TLX/NOPB, 9-DSBGA for LM3642TLX-LT/NOPB, 10-MSOP-EP for A8513KLYTR-T, 8-SO for LTC3490ES8#PBF, and SOT-23-5 for MCP1662T-E/OT. Package selection impacts PCB layout, assembly process, and thermal management. Verify compatibility with your manufacturing capabilities before selection.

Q: Which substitute parts maintain the same 24V output specification?

A: Only MP3304BDD-LF-P maintains the 24V output specification. Cross-manufacturer alternatives specify different output voltages: AP3031KTR-G1 (not specified), LM3530UME-25A/NOPB (40V), LM3565TLX/NOPB (5.5V to 8.5V), LM3642TLX-LT/NOPB (5V), A8513KLYTR-T (not specified), LTC3490ES8#PBF (2.8V to 4V), and MCP1662T-E/OT (32V). If 24V output is a critical requirement, MP3304BDD-LF-P is the only viable substitute.

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