MP2488DQ-LF-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP2488DQ-LF-P is an active LED driver IC manufactured by Monolithic Power Systems Inc., designed for step-down (buck) topology DC-DC regulation with PWM dimming capability. This device delivers 2A output current across a single channel and operates within a 4.5V to 55V supply voltage range, making it suitable for automotive-grade lighting applications. The part is packaged in a 10-QFN (3x3) format with an exposed pad and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts become necessary when the MP2488DQ-LF-P reaches end-of-life status, experiences supply constraints, or when design requirements necessitate alternative package formats, output current ratings, or operating temperature ranges while maintaining functional equivalence in LED driver applications.

Key Parameters

Parameter	MP2488DQ-LF-P
Manufacturer	Monolithic Power Systems Inc.
Type	DC DC Regulator (LED Driver)
Topology	Step-Down (Buck)
Internal Switch	Yes
Number of Outputs	1
Voltage Supply (Min)	4.5V
Voltage Supply (Max)	55V
Current Output / Channel	2A
Frequency	200kHz
Dimming	PWM
Operating Temperature	-40°C ~ 85°C (TA)
Grade	Automotive
Package / Case	10-VFDFN Exposed Pad
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the MP2488DQ-LF-P is determined by the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Down (Buck) with internal switch
Single output channel
Output current capability: 2A or higher
Supply voltage range: Minimum 4.5V, maximum 55V or higher
Dimming capability: PWM support
Package compatibility: Surface mount formats

Secondary Compatibility Factors:

Operating temperature range: -40°C minimum and 85°C or higher maximum
Automotive grade qualification preferred for consistency
RoHS3 compliance and unlimited MSL rating for manufacturing compatibility
Frequency operation: 200kHz or adjustable range encompassing 200kHz

Substitute parts are grouped into two categories: Direct Functional Equivalents (matching all primary criteria with identical or superior specifications) and Functional Alternatives (meeting core LED driver requirements with trade-offs in package size, current rating, or operating temperature).

Parameter Comparison

Parameter	MP2488DQ-LF-P	A6214KLKTR-T	AL8860MP-13	AP8803WTG-7	CAV4201TD-GT3	LT3474IFE#TRPBF	LT3932EUFD#PBF	MAX16822AASA+T
Manufacturer	MPS	Allegro	Diodes Inc.	Diodes Inc.	onsemi	Analog Devices	Analog Devices	Analog Devices/Maxim
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Output Current	2A	2A	1.5A	1A	350mA	1A	2A	350mA
Supply Voltage Min	4.5V	4.5V	4.5V	8V	6.5V	4.6V	3.6V	6.5V
Supply Voltage Max	55V	55V	40V	30V	36V	36V	36V	65V
Frequency	200kHz	—	1MHz	700kHz	50kHz ~ 1MHz	200kHz ~ 2MHz	200kHz ~ 2MHz	2MHz
Dimming	PWM	Analog, PWM	Analog, PWM	Analog, PWM	Analog	PWM	Analog, PWM	PWM
Operating Temp Min	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C
Operating Temp Max	85°C	125°C	105°C	125°C	125°C	125°C	125°C	125°C
Grade	Automotive	Automotive (AEC-Q100)	—	—	—	Automotive	Automotive	—
Package	10-QFN (3x3)	10-SOIC	8-MSOP-EP	TSOT-23-5	TSOT-23-5	16-TSSOP-EP	28-QFN (4x5)	8-SOIC
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
MSL Rating	1 (Unlimited)	2A (4 Weeks)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

Tier 1 - Direct Functional Equivalent:

A6214KLKTR-T (Allegro MicroSystems) is the primary substitute. It matches the MP2488DQ-LF-P across all critical parameters: 2A output current, 4.5V to 55V supply range, buck topology with internal switch, and automotive-grade qualification (AEC-Q100). The device supports both analog and PWM dimming, providing enhanced flexibility. Operating temperature extends to 125°C, exceeding the original specification. The 10-SOIC package differs from the 10-QFN format but maintains surface-mount compatibility. MSL rating of 2A (4 Weeks) requires controlled storage conditions compared to the unlimited rating of the original part.

Tier 2 - Functional Alternatives with Trade-offs:

LT3932EUFD#PBF (Analog Devices) provides 2A output current and automotive-grade qualification with extended operating temperature to 125°C. The 28-QFN (4x5) package is larger than the original 10-QFN, requiring PCB layout modification. Supply voltage range of 3.6V to 36V is narrower than the MP2488DQ-LF-P, limiting high-voltage applications above 36V. Analog and PWM dimming support is provided.

LT3474IFE#TRPBF (Analog Devices) delivers 1A output current with automotive-grade qualification and adjustable frequency (200kHz to 2MHz). The 16-TSSOP-EP package is larger than the original. Supply voltage range of 4.6V to 36V is narrower. This option is suitable for applications requiring lower current or where the extended frequency range provides design advantages.

Tier 3 - Limited Substitutes:

AL8860MP-13, AP8803WTG-7, CAV4201TD-GT3, and MAX16822AASA+T offer reduced output current (1.5A, 1A, 350mA, and 350mA respectively) or narrower supply voltage ranges. These are suitable only when application requirements permit lower current delivery or when supply voltage constraints align with their specifications. CAV4201TD-GT3 carries Last Time Buy status, indicating discontinued production.

Selection Criteria Summary:

Full replacement capability: A6214KLKTR-T
Higher temperature operation: LT3932EUFD#PBF, LT3474IFE#TRPBF
Narrower voltage range acceptable: LT3932EUFD#PBF, LT3474IFE#TRPBF
Lower current acceptable: AL8860MP-13, AP8803WTG-7, MAX16822AASA+T
Avoid: CAV4201TD-GT3 (Last Time Buy status)

All recommended substitutes maintain RoHS3 compliance and automotive-grade qualification where applicable, ensuring regulatory and manufacturing process compatibility.

Frequently Asked Questions (FAQ)

Q: Can A6214KLKTR-T directly replace MP2488DQ-LF-P without circuit modification?

A: A6214KLKTR-T is functionally equivalent across all critical electrical parameters (2A output, 4.5V-55V supply, buck topology, PWM dimming). However, the package differs (10-SOIC vs. 10-QFN), requiring PCB footprint redesign. Pin-to-pin compatibility must be verified against the respective datasheets before implementation.

Q: Why does LT3932EUFD#PBF have a narrower supply voltage range?

A: LT3932EUFD#PBF operates from 3.6V to 36V, compared to the MP2488DQ-LF-P range of 4.5V to 55V. This device is unsuitable for applications requiring supply voltages above 36V. Verify your application's maximum supply voltage before selection.

Q: What is the impact of MSL rating differences?

A: The MP2488DQ-LF-P carries MSL 1 (Unlimited), allowing indefinite shelf storage. A6214KLKTR-T carries MSL 2A (4 Weeks), requiring controlled humidity storage and baking procedures if storage exceeds 4 weeks. Coordinate with procurement and manufacturing to manage moisture sensitivity protocols.

Q: Are all substitutes automotive-qualified?

A: No. A6214KLKTR-T and LT3932EUFD#PBF and LT3474IFE#TRPBF carry automotive-grade qualification (AEC-Q100 or equivalent). AL8860MP-13, AP8803WTG-7, CAV4201TD-GT3, and MAX16822AASA+T do not list automotive qualification. For automotive applications, restrict selection to qualified devices.

Q: Can I use a lower-current substitute if my application requires only 1A?

A: Yes, if your application requires 1A or less, AL8860MP-13 (1.5A), AP8803WTG-7 (1A), CAV4201TD-GT3 (350mA), or MAX16822AASA+T (350mA) are viable. Verify that the supply voltage range and package format align with your design constraints.

Q: Why is CAV4201TD-GT3 listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. This part should be avoided for new designs or long-term production requirements. Use only if existing inventory is available and end-of-life is acceptable for your application timeline.

Q: What package formats are available among substitutes?

A: Substitutes span multiple package formats: 10-SOIC (A6214KLKTR-T), 8-MSOP-EP (AL8860MP-13), TSOT-23-5 (AP8803WTG-7, CAV4201TD-GT3), 16-TSSOP-EP (LT3474IFE#TRPBF), 28-QFN (LT3932EUFD#PBF), and 8-SOIC (MAX16822AASA+T). Larger packages may require PCB redesign. Verify footprint compatibility before selection.

Q: Do all substitutes support PWM dimming?

A: Most support PWM dimming. CAV4201TD-GT3 supports only analog dimming. If your application requires PWM dimming exclusively, exclude CAV4201TD-GT3 from consideration.

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