MP24875DN-LF LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP24875DN-LF is an active-status LED Driver IC manufactured by Monolithic Power Systems Inc., designed as a DC-DC regulator with step-down (buck) topology for lighting applications. This part features PWM dimming capability, 1.5A switch current output, and operates across a 4.5V to 55V supply voltage range in an 8-SOIC package with exposed pad. The device is ROHS3 compliant and automotive-grade, with MSL rating of 2 (1 Year).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or application-specific performance needs while maintaining functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer	Monolithic Power Systems Inc.
Part Number	MP24875DN-LF
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Internal Switch(s)	Yes
Number of Outputs	1
Voltage - Supply (Min)	4.5V
Voltage - Supply (Max)	55V
Current - Output / Channel	1.5A (Switch)
Frequency	200kHz
Dimming	PWM
Applications	Lighting
Operating Temperature	-40°C ~ 85°C (TA)
Grade	Automotive
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad
RoHS Status	ROHS3 Compliant
MSL	2 (1 Year)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP24875DN-LF are qualified based on the following substitution criteria:

Primary Compatibility Parameters:

Topology: Step-Down (Buck) DC-DC Regulator
Internal Switch: Present
Number of Outputs: 1
Dimming Capability: PWM support
Supply Voltage Range: Minimum 4.5V, Maximum ≥55V
Output Current: ≥1.5A capability
Applications: Lighting
RoHS Status: ROHS3 Compliant
Product Status: Active

Substitutes are grouped into two categories based on output current capacity and package form factor:

Category A - Full Current Equivalents (≥1.5A): Parts with 1.5A or greater output current capacity in compact packages, suitable for direct replacement in applications requiring the full 1.5A specification.

Category B - Reduced Current Alternatives (0.5A - 1.0A): Parts with lower output current ratings (500mA to 1A) that maintain buck topology, PWM dimming, and automotive-grade specifications. These are applicable in designs where output current requirements are lower than the primary specification.

Category C - Enhanced Current Capability (≥3A): Parts exceeding 1.5A output current, suitable for applications requiring higher current delivery while maintaining buck topology and PWM dimming.

Parameter Comparison

Part Number	Manufacturer	Topology	Output Current	Supply Voltage (Min-Max)	Dimming	Package	Operating Temp	Grade	RoHS	Product Status
MP24875DN-LF	Monolithic Power Systems Inc.	Step-Down (Buck)	1.5A	4.5V - 55V	PWM	8-SOIC	-40°C ~ 85°C	Automotive	ROHS3	Active
HV9967BMG-G	Microchip Technology	Step-Down (Buck)	750mA	8V - 60V	PWM	8-MSOP	-40°C ~ 125°C	-	ROHS3	Active
LED6000PHR	STMicroelectronics	Step-Down (Buck)	3A	4.5V - 61V	PWM	16-HTSSOP	-40°C ~ 150°C	-	ROHS3	Active
LM3402MR/NOPB	Texas Instruments	Step-Down (Buck)	500mA	6V - 42V	PWM	8-PowerSOIC	-40°C ~ 125°C	-	ROHS3	Active
LM3402MRX/NOPB	Texas Instruments	Step-Down (Buck)	500mA	6V - 42V	PWM	8-PowerSOIC	-40°C ~ 125°C	-	ROHS3	Active
LM3404MR/NOPB	Texas Instruments	Step-Down (Buck)	1A	6V - 42V	PWM	8-PowerSOIC	-40°C ~ 125°C	Automotive	ROHS3	Active
LM3407MY/NOPB	Texas Instruments	Step-Down (Buck)	350mA	4.5V - 30V	PWM	8-HVSSOP	-40°C ~ 125°C	-	ROHS3	Active
LM3414MR/NOPB	Texas Instruments	Step-Down (Buck)	1A	4.5V - 42V	PWM	8-PowerSOIC	-40°C ~ 125°C	Automotive	ROHS3	Active
LT3474EFE#TRPBF	Analog Devices Inc.	Step-Down (Buck)	1A	4.6V - 36V	PWM	16-TSSOP-EP	-40°C ~ 85°C	Automotive	ROHS3	Active
LTC3490ES8#PBF	Analog Devices Inc.	Step-Up (Boost)	350mA	1V - 3.2V	Analog	8-SO	-40°C ~ 85°C	-	ROHS3	Active
TPS92513HVDGQR	Texas Instruments	Step-Down (Buck)	1.5A	4.5V - 60V	PWM	10-HVSSOP	-40°C ~ 125°C	-	ROHS3	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended for 1:1 Replacement):

TPS92513HVDGQR (Texas Instruments) qualifies as the primary direct equivalent. This part maintains 1.5A output current specification, supports 4.5V minimum supply voltage matching the MP24875DN-LF, extends maximum supply voltage to 60V, provides PWM dimming, and is ROHS3 compliant with active product status. Operating temperature extends to 125°C (TJ) versus 85°C (TA) on the primary part. Package differs (10-HVSSOP versus 8-SOIC), requiring PCB layout modification.

Higher Current Alternative:

LED6000PHR (STMicroelectronics) provides 3A output current capability with step-down topology, PWM dimming, and 4.5V to 61V supply range. ROHS3 compliant and active status. Operating temperature reaches 150°C (TJ). Package is 16-HTSSOP, requiring significant PCB redesign. Suitable for applications requiring current headroom beyond 1.5A specification.

Reduced Current Alternatives (Lower Power Applications):

LM3404MR/NOPB and LM3414MR/NOPB (Texas Instruments) both deliver 1A output current with automotive-grade qualification, matching the primary part's automotive specification. Both support PWM dimming and ROHS3 compliance. Supply voltage range is 6V to 42V (LM3404) and 4.5V to 42V (LM3414), limiting maximum supply voltage to 42V. Operating temperature to 125°C (TJ). Package is 8-PowerSOIC, compatible with 8-SOIC footprint with minor layout considerations.

Compliance and Certification Status:

All recommended substitutes maintain ROHS3 compliance and active product status. Automotive-grade qualification is present on MP24875DN-LF, LM3404MR/NOPB, LM3414MR/NOPB, and LT3474EFE#TRPBF. Non-automotive substitutes (HV9967BMG-G, LED6000PHR, LM3402 series, LM3407MY/NOPB, TPS92513HVDGQR) are suitable for non-automotive lighting applications.

Parts Not Recommended for Direct Substitution:

LTC3490ES8#PBF employs step-up (boost) topology with 1V to 3.2V supply range and analog dimming, fundamentally incompatible with the MP24875DN-LF step-down architecture and 4.5V minimum supply requirement.

Frequently Asked Questions (FAQ)

Q: Can HV9967BMG-G replace MP24875DN-LF in all applications?

A: HV9967BMG-G is suitable for lighting applications where output current does not exceed 750mA. The reduced current rating (750mA versus 1.5A) limits applicability to lower-power LED driver circuits. Supply voltage range extends to 60V maximum, exceeding the primary part's 55V specification. Minimum supply voltage increases to 8V, which may be incompatible with 4.5V to 8V input designs. Package change from 8-SOIC to 8-MSOP requires PCB layout modification.

Q: Is TPS92513HVDGQR a direct pin-compatible replacement?

A: TPS92513HVDGQR maintains electrical equivalence (1.5A output, 4.5V to 60V supply, PWM dimming, ROHS3 compliance) but differs in package form factor (10-HVSSOP versus 8-SOIC). Pin count increases from 8 to 10, requiring PCB redesign. Electrical functionality is compatible; physical layout is not.

Q: What is the primary limitation of LM3407MY/NOPB as a substitute?

A: LM3407MY/NOPB is limited by maximum supply voltage of 30V, significantly below the MP24875DN-LF specification of 55V. Output current is 350mA, insufficient for 1.5A applications. This part is applicable only in designs with supply voltages below 30V and output current requirements below 350mA.

Q: Can LED6000PHR be used in space-constrained designs?

A: LED6000PHR requires 16-HTSSOP package (0.173" width, 4.40mm) versus the primary part's 8-SOIC package (0.154" width, 3.90mm). The larger package footprint and increased pin count (16 versus 8) necessitate significant PCB redesign. Space-constrained applications should prioritize 8-pin alternatives such as LM3404MR/NOPB or LM3414MR/NOPB.

Q: Are automotive-grade substitutes available?

A: Automotive-grade LED driver ICs in this category include LM3404MR/NOPB, LM3414MR/NOPB, and LT3474EFE#TRPBF. All three maintain automotive qualification, ROHS3 compliance, and active product status. LM3404MR/NOPB and LM3414MR/NOPB are 8-pin packages compatible with 8-SOIC footprints. LT3474EFE#TRPBF is a 16-pin package requiring layout modification.

Q: What is the MSL (Moisture Sensitivity Level) consideration for substitutes?

A: MP24875DN-LF carries MSL 2 (1 Year). Substitutes with MSL 1 (Unlimited) include HV9967BMG-G, LM3407MY/NOPB, and TPS92513HVDGQR, offering superior moisture tolerance. Substitutes with MSL 3 (168 Hours) include LM3402MR/NOPB, LM3402MRX/NOPB, LM3404MR/NOPB, and LM3414MR/NOPB, requiring stricter moisture control during storage and assembly.

Q: Which substitute offers the widest operating temperature range?

A: LED6000PHR provides the widest operating temperature range at -40°C to 150°C (TJ), compared to MP24875DN-LF at -40°C to 85°C (TA). This extended range is beneficial for high-temperature lighting applications. However, package change from 8-SOIC to 16-HTSSOP requires PCB redesign.

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