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MP24893DJ-LF-P LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP24893DJ-LF-P is a LED Driver IC manufactured by Monolithic Power Systems Inc., designed as a 1-output DC-DC step-down (buck) regulator with integrated PWM and analog dimming capabilities. This device operates across a 6V to 36V supply range and delivers 1A output current, making it suitable for backlight, lighting, and signage applications. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance of systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MP24893DJ-LF-P |
| Manufacturer | Monolithic Power Systems Inc. |
| Product Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage Supply Range | 6V to 36V |
| Output Current | 1A |
| Dimming Capability | Analog, PWM |
| Package Type | TSOT-23-5 (SOT-23-5 Thin) |
| Operating Temperature | -40°C to 125°C (TJ) |
| Grade | Automotive |
| RoHS Status | ROHS3 Compliant |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitution of the MP24893DJ-LF-P is determined by the following critical parameters:
- Topology: Step-down (buck) regulation is mandatory for functional equivalence
- Output Current Capability: Minimum 1A required; higher ratings are acceptable
- Supply Voltage Range: Must encompass or exceed the 6V to 36V input specification
- Dimming Support: Analog and PWM dimming capability preferred for feature parity
- Package Compatibility: Surface-mount packages with similar pin counts and thermal characteristics
- Operating Temperature: -40°C to 125°C range preferred for automotive-grade applications
- Compliance: ROHS3 compliance and automotive grading where applicable
The substitute parts listed below meet these criteria across varying package types and manufacturers, providing options for different PCB layout constraints and thermal management requirements.
Parameter Comparison
| Parameter | MP24893DJ-LF-P | AL8861Y-13 | HV9967BMG-G | IS31LT3352-V1GRLS2-TR | LM3402MRX/NOPB | LM3406MH/NOPB | LM3407MY/NOPB | LM3414HVSDX/NOPB | LM3414MRX/NOPB | LT3474EFE#TRPBF |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | MPS | Diodes Inc. | Microchip | Lumissil | TI | TI | TI | TI | TI | ADI |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Supply Voltage Min (V) | 6 | 4.5 | 8 | 6 | 6 | 6 | 4.5 | 4.5 | 4.5 | 4.6 |
| Supply Voltage Max (V) | 36 | 40 | 60 | 40 | 42 | 42 | 30 | 65 | 42 | 36 |
| Output Current (A) | 1 | 1.5 | 0.75 | 0.75 | 0.5 | 1.5 | 0.35 | 1 | 1 | 1 |
| Dimming Type | Analog, PWM | Analog, PWM | PWM | Analog, PWM | PWM | PWM | PWM | Analog, PWM | Analog, PWM | PWM |
| Operating Temp Range (°C) | -40 to 125 | -40 to 85 | -40 to 125 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 |
| Package Type | TSOT-23-5 | SOT-89-5 | 8-MSOP | 8-SOP | 8-SO PowerPad | 14-HTSSOP | 8-HVSSOP | 8-WSON (3x3) | 8-SO PowerPad | 16-TSSOP-EP |
| Grade | Automotive | — | — | — | — | Automotive | — | Automotive | Automotive | Automotive |
| RoHS Status | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 |
| Product Status | Not For New Designs | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All substitute parts listed are ROHS3 compliant and actively supported by their respective manufacturers, providing superior supply chain availability compared to the MP24893DJ-LF-P, which carries "Not For New Designs" status.
For Automotive Applications with Full Temperature Range (-40°C to 125°C): LM3406MH/NOPB, LM3414HVSDX/NOPB, and LM3414MRX/NOPB are automotive-grade alternatives with active product status. LM3406MH/NOPB delivers 1.5A output current in a 14-HTSSOP package, suitable for higher-power requirements. LM3414HVSDX/NOPB and LM3414MRX/NOPB both provide 1A output with analog and PWM dimming, matching the original part's feature set.
For Space-Constrained Designs: AL8861Y-13 (Diodes Incorporated) offers 1.5A in a compact SOT-89-5 package with extended supply voltage range (4.5V to 40V) and active product status. Operating temperature is limited to -40°C to 85°C.
For Extended Supply Voltage Range: LM3414HVSDX/NOPB supports 4.5V to 65V input, providing the widest operating envelope among substitutes while maintaining 1A output and automotive grading.
For Reduced Output Current Applications: HV9967BMG-G (Microchip Technology) and IS31LT3352-V1GRLS2-TR (Lumissil Microsystems) deliver 750mA and 350mA respectively, suitable for lower-power LED driver implementations with full temperature range support (HV9967BMG-G) or reduced range (IS31LT3352-V1GRLS2-TR).
Frequently Asked Questions (FAQ)
Q: Can I directly replace MP24893DJ-LF-P with any of these substitutes without PCB modification?
A: Direct pin-for-pin replacement is not possible due to package differences. MP24893DJ-LF-P uses TSOT-23-5 (5-pin), while most substitutes employ larger packages (8-pin to 16-pin). PCB layout redesign is required. However, functional equivalence is maintained across all listed substitutes.
Q: Which substitute best matches the original part's specifications?
A: LM3414MRX/NOPB provides the closest functional match: 1A output current, 4.5V to 42V supply range, analog and PWM dimming, automotive grading, and -40°C to 125°C operating temperature. It differs only in package type (8-SO PowerPad vs. TSOT-23-5).
Q: What is the impact of operating temperature range differences?
A: Substitutes with -40°C to 85°C range (AL8861Y-13, IS31LT3352-V1GRLS2-TR, LT3474EFE#TRPBF) are unsuitable for applications requiring full -40°C to 125°C operation. Verify your system's thermal requirements before selection.
Q: Are all substitutes automotive-grade?
A: No. Only LM3406MH/NOPB, LM3414HVSDX/NOPB, LM3414MRX/NOPB, and LT3474EFE#TRPBF carry automotive grading. For non-automotive applications, all listed parts are acceptable.
Q: How do dimming capabilities affect substitution?
A: The original part supports both analog and PWM dimming. Substitutes supporting both modes (AL8861Y-13, IS31LT3352-V1GRLS2-TR, LM3414HVSDX/NOPB, LM3414MRX/NOPB) provide full feature parity. PWM-only substitutes (HV9967BMG-G, LM3402MRX/NOPB, LM3406MH/NOPB, LM3407MY/NOPB, LT3474EFE#TRPBF) require firmware or circuit modification if analog dimming is required.
Q: What supply voltage range should I prioritize?
A: Verify your application's input voltage specification. The original part operates 6V to 36V. LM3414HVSDX/NOPB (4.5V to 65V) offers the widest margin. If your design uses lower input voltages (below 6V), LM3407MY/NOPB (4.5V to 30V) or LT3474EFE#TRPBF (4.6V to 36V) are required.
Q: Are there inventory considerations for these substitutes?
A: All listed substitutes show active inventory status. LM3414MRX/NOPB has the highest stock level (20,100 units), followed by LM3414HVSDX/NOPB (9,300 units) and LM3402MRX/NOPB (9,400 units), providing reliable supply chain access.
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