MP2480DN-LF LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP2480DN-LF 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 component delivers 3A switch current and operates across a 5V to 36V supply range, making it suitable for backlight and lighting applications. The part is RoHS3 compliant and currently in active production status with 1112 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter ranges for LED driver applications.

Key Parameters

Parameter	MP2480DN-LF
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Internal Switch(s)	Yes
Number of Outputs	1
Voltage - Supply (Min)	5V
Voltage - Supply (Max)	36V
Current - Output / Channel	3A (Switch)
Frequency	2MHz
Dimming	PWM
Applications	Backlight, Lighting
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2A (4 Weeks)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP2480DN-LF are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Topology: Step-Down (Buck) with internal switch
Dimming capability: PWM support
Supply voltage range: Minimum 5V to maximum 36V (or overlapping range)
Output current capability: 3A or greater switch current
Single output configuration
Surface mount packaging
RoHS3 compliance and active product status

Secondary Compatibility Factors:

Operating temperature range: -40°C minimum and 85°C or higher maximum
Switching frequency: 1MHz to 2MHz range preferred for LED driver applications
Exposed pad or PowerPad package variants acceptable for thermal management

Parts that deviate significantly from these parameters (such as boost-only topologies, lower current ratings, or incompatible voltage ranges) are listed but noted as partial or application-specific alternatives.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Min (V)	Supply Max (V)	Current (A)	Frequency (MHz)	Dimming	Package	Temp Range (°C)	Status
MP2480DN-LF	MPS	Buck	5	36	3	2	PWM	8-SOIC-EP	-40 to 85	Active
IS31LT3350-V1STLS2-TR	Lumissil	Buck	6	40	0.65	1	Analog, PWM	SOT-23-5	-40 to 85	Active
LED6000PHR	STMicroelectronics	Buck	4.5	61	3	0.25 to 1.5	PWM	16-HTSSOP	-40 to 150	Active
LM3402MRX/NOPB	Texas Instruments	Buck	6	42	0.5	1	PWM	8-SO PowerPad	-40 to 125	Active
LM3404HVMAX/NOPB	Texas Instruments	Buck	6	75	1	1	PWM	8-SOIC	-40 to 125	Active
LM3406HVMH/NOPB	Texas Instruments	Buck	6	75	1.5	0.01 to 1	PWM	14-HTSSOP	-40 to 125	Active
LM3407MY/NOPB	Texas Instruments	Buck	4.5	30	0.35	0.3 to 1	PWM	8-HVSSOP	-40 to 125	Active
LM3410YSD/NOPB	Texas Instruments	SEPIC, Boost	2.7	5.5	2.8	0.525	PWM	6-WSON	-40 to 125	Active
LM3414MR/NOPB	Texas Instruments	Buck	4.5	42	1	0.5	Analog, PWM	8-SO PowerPad	-40 to 125	Active
LT1932ES6#TRMPBF	Analog Devices	Boost	1	10	0.04	1.2	PWM	SOT-23-6	-40 to 85	Active
LT3478IFE#PBF	Analog Devices	Buck, Boost	2.8	36	4.5	0.2 to 2.25	PWM	16-TSSOP-EP	-40 to 125	Active

Engineering Selection Recommendations

Direct Equivalents (Buck Topology, 3A Class):

LED6000PHR (STMicroelectronics) provides the closest functional match to MP2480DN-LF. Both devices operate in step-down topology with 3A switch current and PWM dimming. The LED6000PHR extends the maximum supply voltage to 61V and operating temperature to 150°C, offering broader application flexibility. Package differs (16-HTSSOP vs. 8-SOIC-EP), requiring PCB layout adjustment. Both are RoHS3 compliant and active status.

Partial Equivalents (Buck Topology, Lower Current):

LM3402MRX/NOPB, LM3404HVMAX/NOPB, LM3406HVMH/NOPB, and LM3414MR/NOPB are buck-topology LED drivers with reduced output current (0.5A to 1.5A). These are suitable for applications requiring lower LED drive current than the MP2480DN-LF. All maintain PWM dimming, RoHS3 compliance, and active production status. Texas Instruments parts include automotive-grade variants (LM3404HVMAX/NOPB, LM3406HVMH/NOPB) with extended temperature ranges to 125°C.

Lower Current Alternative:

LM3407MY/NOPB (Texas Instruments) delivers 350mA output current in 8-HVSSOP package. Supply range 4.5V to 30V overlaps with MP2480DN-LF. Suitable for reduced-power LED applications. RoHS3 compliant, active status.

Reduced Functionality Alternatives:

IS31LT3350-V1STLS2-TR (Lumissil) supports both analog and PWM dimming in SOT-23-5 package with 650mA output. Supply range 6V to 40V. Smaller package footprint but lower current rating. RoHS3 compliant, active status.

Non-Equivalent Topologies (Not Recommended for Direct Substitution):

LM3410YSD/NOPB employs SEPIC and boost topology, incompatible with buck-only applications. Supply range 2.7V to 5.5V does not overlap with MP2480DN-LF minimum 5V requirement.

LT1932ES6#TRMPBF is boost-only topology with 40mA output, unsuitable for 3A LED driver applications.

LT3478IFE#PBF supports both buck and boost topologies with 4.5A switch current and extended frequency range (200kHz to 2.25MHz). Supply range 2.8V to 36V overlaps with MP2480DN-LF. Suitable for applications requiring topology flexibility. 16-TSSOP-EP package differs from 8-SOIC-EP. RoHS3 compliant, active status.

Frequently Asked Questions (FAQ)

Q: Can IS31LT3350-V1STLS2-TR replace MP2480DN-LF in a 3A LED driver application?

A: No. IS31LT3350-V1STLS2-TR is rated for 650mA maximum output current, insufficient for applications requiring 3A. This part is suitable only for lower-power LED circuits.

Q: What is the primary difference between LED6000PHR and MP2480DN-LF?

A: Both are buck-topology LED drivers with 3A output current and PWM dimming. LED6000PHR extends maximum supply voltage to 61V (vs. 36V) and operating temperature to 150°C (vs. 85°C). Package differs: LED6000PHR uses 16-HTSSOP while MP2480DN-LF uses 8-SOIC-EP. PCB layout modification is required for substitution.

Q: Are Texas Instruments LM3404HVMAX/NOPB and LM3406HVMH/NOPB automotive-grade parts?

A: Yes. Both parts carry automotive grade designation with extended operating temperature range to 125°C and MSL rating of 1 (Unlimited). These are suitable for automotive lighting applications.

Q: Why is LM3410YSD/NOPB not recommended as a substitute?

A: LM3410YSD/NOPB uses SEPIC and boost topology, fundamentally different from MP2480DN-LF buck topology. Supply voltage range (2.7V to 5.5V) does not adequately overlap with MP2480DN-LF (5V to 36V). Output current (2.8A) is comparable, but topology incompatibility makes direct substitution unsuitable.

Q: Can LT3478IFE#PBF replace MP2480DN-LF?

A: LT3478IFE#PBF supports both buck and boost topologies with 4.5A switch current, exceeding MP2480DN-LF specifications. Supply range (2.8V to 36V) overlaps adequately. However, package differs (16-TSSOP-EP vs. 8-SOIC-EP), requiring PCB redesign. Suitable for applications requiring topology flexibility or higher current capability.

Q: What packaging considerations apply when substituting parts?

A: MP2480DN-LF uses 8-SOIC-EP (0.154", 3.90mm width). LED6000PHR uses 16-HTSSOP (0.173", 4.40mm width). LM3402MRX/NOPB and LM3414MR/NOPB use 8-SO PowerPad (0.154", 3.90mm width). LM3404HVMAX/NOPB uses 8-SOIC (0.154", 3.90mm width). Package footprint differences require PCB layout verification before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance status, matching MP2480DN-LF environmental certification.

Q: Which substitute offers the widest supply voltage range?

A: LED6000PHR supports 4.5V to 61V supply range, the widest among listed substitutes. This extends application flexibility for high-voltage LED driver circuits.

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