MP24183DQ-LF-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP24183DQ-LF-Z is an active LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This component functions as a 1-output DC DC regulator with step-down (buck) topology, delivering 1A output current with analog and PWM dimming capabilities. The device is designed for backlight applications and operates across an automotive temperature range of -40°C to 85°C. Product status is active with 1388 units in stock inventory.

Equivalent and substitute parts are identified when design requirements necessitate alternative packaging, supply voltage ranges, topology configurations, or when primary component availability is constrained. Substitutes maintain functional compatibility within the LED driver category while accommodating specific application constraints.

Key Parameters

Parameter	MP24183DQ-LF-Z
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Number of Outputs	1
Voltage - Supply (Min)	4.5V
Voltage - Supply (Max)	55V
Current - Output / Channel	1A
Dimming	Analog, PWM
Applications	Backlight
Operating Temperature	-40°C ~ 85°C (TA)
Grade	Automotive
Package / Case	10-VFDFN Exposed Pad
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution logic for the MP24183DQ-LF-Z is determined by the following critical parameters:

Topology Compatibility: The main part operates as a step-down (buck) regulator. Substitutes may include buck, boost, or buck-boost topologies depending on application flexibility.

Supply Voltage Range: The main part accepts 4.5V to 55V input. Substitutes with overlapping or extended supply ranges are compatible.

Output Current Capability: The main part delivers 1A output current. Substitutes with equal or greater current ratings maintain functional equivalence.

Dimming Control: The main part supports both analog and PWM dimming. Substitutes supporting either or both dimming methods are acceptable.

Package Type: The main part uses 10-VFDFN. Substitutes may use alternative surface-mount packages (TSSOP, TDFN, DFN, MLF) based on PCB layout requirements.

Operating Temperature & Grade: The main part operates -40°C to 85°C at automotive grade. Substitutes meeting or exceeding these specifications are compatible.

Compliance & Certifications: All substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification.

Parameter Comparison

Parameter	MP24183DQ-LF-Z	LT3474EFE#TRPBF	LT3478EFE-1#PBF	MAX8595ZETA+T	MIC2298-15YML-TR	NCV3066MNTXG	TPS61161ADRVT
Manufacturer	Monolithic Power Systems Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Microchip Technology	onsemi	Texas Instruments
Type	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator
Topology	Step-Down (Buck)	Step-Down (Buck)	Step-Down (Buck), Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	Step-Down (Buck), Step-Up (Boost)	Step-Up (Boost)
Number of Outputs	1	1	1	1	1	1	1
Voltage - Supply (Min)	4.5V	4.6V	2.8V	2.6V	2.5V	3V	2.7V
Voltage - Supply (Max)	55V	36V	36V	5.5V	10V	40V	18V
Current - Output / Channel	1A	1A	4.5A (Switch)	25mA	4.6A (Switch)	1.5A (Switch)	700mA (Switch)
Dimming	Analog, PWM	PWM	PWM	Analog, PWM	Analog	Analog, PWM	PWM
Applications	Backlight	Backlight	Backlight	Backlight	Camera Flash	Lighting	Backlight
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)
Grade	Automotive	Automotive	Automotive	Not specified	Not specified	Not specified	Not specified
Package / Case	10-VFDFN Exposed Pad	16-TSSOP (0.173", 4.40mm Width) Exposed Pad	16-TSSOP (0.173", 4.40mm Width) Exposed Pad	8-WDFN Exposed Pad	12-VFDFN Exposed Pad, 12-MLF®	8-VDFN Exposed Pad	6-WDFN Exposed Pad
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

LT3474EFE#TRPBF and LT3478EFE-1#PBF from Analog Devices Inc. maintain automotive-grade classification and active product status. Both support PWM dimming and backlight applications. LT3474EFE#TRPBF operates within 4.6V to 36V supply range with 1A output, directly matching the main part's current capability. LT3478EFE-1#PBF extends operating temperature to -40°C to 125°C and provides 4.5A switch current with buck-boost topology flexibility.

Secondary Substitutes (Application-Dependent):

NCV3066MNTXG from onsemi provides buck-boost topology with 1.5A switch current and extended temperature range (-40°C to 125°C). Supply range of 3V to 40V overlaps the main part's specification. Supports both analog and PWM dimming for lighting applications.

TPS61161ADRVT from Texas Instruments operates as a boost regulator with 700mA switch current and PWM dimming. Supply range of 2.7V to 18V is narrower than the main part but suitable for lower-voltage input applications. Maintains backlight application focus.

Limited Compatibility Substitutes:

MAX8595ZETA+T from Analog Devices Inc./Maxim Integrated functions as a boost regulator with 25mA output current, significantly lower than the main part's 1A rating. Supply range restricted to 2.6V to 5.5V. Suitable only for low-power backlight applications.

MIC2298-15YML-TR from Microchip Technology operates as a boost regulator with 4.6A switch current and analog dimming only. Supply range of 2.5V to 10V and camera flash application focus limit direct substitution for general backlight use.

All substitutes maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can LT3474EFE#TRPBF directly replace MP24183DQ-LF-Z in a backlight circuit?

A: LT3474EFE#TRPBF is compatible for backlight applications requiring 1A output current and PWM dimming. The substitute operates within 4.6V to 36V supply range, which overlaps the main part's 4.5V to 55V range. Package change from 10-VFDFN to 16-TSSOP requires PCB layout modification. Both maintain automotive grade and active product status.

Q: What is the key difference between buck and boost topology substitutes?

A: The main part MP24183DQ-LF-Z uses step-down (buck) topology, reducing input voltage to lower output levels. Boost topology substitutes (MAX8595ZETA+T, MIC2298-15YML-TR, TPS61161ADRVT) increase input voltage to higher output levels. Buck-boost substitutes (LT3478EFE-1#PBF, NCV3066MNTXG) support both functions. Topology selection depends on application voltage requirements.

Q: Does supply voltage range affect substitution compatibility?

A: Yes. The main part accepts 4.5V to 55V input. Substitutes with supply ranges that do not overlap this specification may not function in the original circuit. LT3474EFE#TRPBF (4.6V to 36V) and NCV3066MNTXG (3V to 40V) have lower maximum ratings. MAX8595ZETA+T (2.6V to 5.5V) and MIC2298-15YML-TR (2.5V to 10V) are unsuitable for high-voltage input applications.

Q: How does output current rating affect part selection?

A: The main part delivers 1A output current. Substitutes with lower ratings (MAX8595ZETA+T at 25mA, TPS61161ADRVT at 700mA) cannot support circuits requiring full 1A delivery. Substitutes with equal or higher ratings (LT3478EFE-1#PBF at 4.5A, MIC2298-15YML-TR at 4.6A, NCV3066MNTXG at 1.5A) provide adequate or excess capacity.

Q: What packaging considerations apply to substitution?

A: The main part uses 10-VFDFN (3x3mm) package. Substitutes employ different packages: LT3474EFE#TRPBF and LT3478EFE-1#PBF use 16-TSSOP (larger footprint), MAX8595ZETA+T uses 8-TDFN (3x3mm), MIC2298-15YML-TR uses 12-MLF (3x3mm), NCV3066MNTXG uses 8-DFN (4x4mm), TPS61161ADRVT uses 6-WSON (2x2mm). PCB layout and thermal management requirements differ by package type.

Q: Are all substitutes automotive-grade components?

A: The main part carries automotive grade classification. Among substitutes, LT3474EFE#TRPBF and LT3478EFE-1#PBF are automotive-grade. MAX8595ZETA+T, MIC2298-15YML-TR, NCV3066MNTXG, and TPS61161ADRVT do not specify automotive grade. Grade designation affects reliability qualification and application suitability for automotive environments.

Q: What dimming control options are available across substitutes?

A: The main part supports both analog and PWM dimming. LT3474EFE#TRPBF and LT3478EFE-1#PBF support PWM only. MAX8595ZETA+T and NCV3066MNTXG support both analog and PWM. MIC2298-15YML-TR supports analog only. TPS61161ADRVT supports PWM only. Dimming method selection depends on circuit design requirements.

Q: How do operating temperature ranges affect long-term reliability?

A: The main part operates -40°C to 85°C (TA). LT3474EFE#TRPBF and TPS61161ADRVT match this range. LT3478EFE-1#PBF, MIC2298-15YML-TR, and NCV3066MNTXG extend to -40°C to 125°C (TJ), providing wider thermal margin. Extended temperature range substitutes offer enhanced reliability in high-temperature applications.

Q: What is the significance of Moisture Sensitivity Level (MSL) rating?

A: The main part carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. LT3474EFE#TRPBF, LT3478EFE-1#PBF, MAX8595ZETA+T, MIC2298-15YML-TR, and NCV3066MNTXG also carry MSL 1. TPS61161ADRVT carries MSL 2 (1 Year), requiring controlled storage and handling within one year of manufacture. MSL rating affects component shelf life and manufacturing process requirements.

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