MP24895GJ-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP24895GJ-Z is a LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) device. This is a Step-Down (Buck) DC DC Regulator with PWM dimming capability, rated for 700mA output current and operating across a 6V to 36V supply range. The device is housed in a TSOT-23-5 package and is actively produced with automotive-grade qualification.

Substitute parts are necessary when the MP24895GJ-Z becomes unavailable, when alternative packaging is required for design modifications, or when higher current capacity or different voltage specifications are needed for system optimization.

Key Parameters

Parameter	MP24895GJ-Z
Manufacturer	Monolithic Power Systems Inc.
Type	DC DC Regulator (Step-Down Buck)
Topology	Step-Down (Buck)
Number of Outputs	1
Voltage Supply (Min)	6V
Voltage Supply (Max)	36V
Current Output / Channel	700mA
Dimming	Analog, PWM
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	SOT-23-5 Thin (TSOT-23-5)
Grade	Automotive
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the MP24895GJ-Z is determined by the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Down (Buck) configuration
Supply voltage range: Minimum 6V, Maximum ≥36V
Output current capacity: ≥700mA
Dimming capability: PWM support (Analog, PWM preferred)
Operating temperature range: -40°C to 125°C or higher
Package compatibility: Surface mount, preferably TSOT-23-5 or equivalent footprint
Compliance: ROHS3 compliant, automotive grade preferred

Substitution Groups:

Group 1 - Direct Topology Match (Step-Down Buck, 700mA+): Parts maintaining Step-Down Buck topology with equivalent or higher current ratings and compatible voltage ranges. These are primary substitutes.

Group 2 - Higher Current Capacity (Step-Down Buck, 1A+): Parts with Step-Down Buck topology but higher current ratings (1A or greater), suitable when design margin or future scaling is required.

Group 3 - Alternative Topology (Step-Up Boost): Parts with Step-Up Boost topology. These are secondary substitutes only when the application specifically requires voltage step-up functionality and the supply voltage range permits operation below 6V.

Group 4 - Obsolete or Limited Availability: Parts with discontinued status or non-compliant certifications. These are not recommended for new designs but may be used in legacy system maintenance.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Min (V)	Supply Max (V)	Current (mA)	Dimming	Package	Temp Range (°C)	Grade	Status
MP24895GJ-Z	MPS	Buck	6	36	700	Analog, PWM	TSOT-23-5	-40 ~ 125	Automotive	Active
LM3402HVMMX/NOPB	Texas Instruments	Buck	6	75	500	PWM	8-VSSOP	-40 ~ 125	Automotive	Active
LM3407MYX/NOPB	Texas Instruments	Buck	4.5	30	350	PWM	8-HVSSOP	-40 ~ 125	Automotive	Active
LM3404MAX/NOPB	Texas Instruments	Buck	6	42	1000	PWM	8-SOIC	-40 ~ 125	Automotive	Active
LM3405AXMKE/NOPB	Texas Instruments	Buck	3	22	1000	PWM	TSOT-23-6	-40 ~ 125	Automotive	Active
MIC3202YME	Microchip Technology	Buck	6	37	1000	PWM	8-SOIC-EP	-40 ~ 125	Automotive	Active
A6217KLJTR-T	Allegro MicroSystems	Buck	6	48	3000	PWM	8-SOIC-EP	-40 ~ 125	Automotive	Active
NCL30160DR2G	onsemi	Buck	8	40	1000	PWM	8-SOIC	-40 ~ 125	Automotive	Obsolete
IS31BL3508B-STLS2-TR	Lumissil Microsystems	Boost	2.7	5.5	1200	Analog, PWM	SOT-23-6	-40 ~ 85	N/A	Active
LM2704MF-ADJ/NOPB	Texas Instruments	Boost	2.2	7	550	N/A	SOT-23-5	-40 ~ 85	N/A	Active
LT3517HFE#PBF	Linear Technology	Buck/Boost	3	30	1500	Analog, PWM	16-TSSOP-EP	-40 ~ 150	Automotive	Obsolete

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status, Automotive Grade, Buck Topology):

LM3404MAX/NOPB - Highest compatibility for direct replacement. Maintains Step-Down Buck topology, automotive qualification, -40°C to 125°C operating range, and 1A output current (exceeds 700mA requirement). Supply voltage range 6V to 42V covers the MP24895GJ-Z specification. Package change from TSOT-23-5 to 8-SOIC requires PCB layout modification. PWM dimming supported. ROHS3 compliant. 30,100 units in stock.

MIC3202YME - Strong alternative with equivalent electrical specifications. Step-Down Buck topology, 1A output current, 6V to 37V supply range, automotive-grade operation, -40°C to 125°C. Package is 8-SOIC-EP (requires layout change). PWM dimming supported. ROHS3 compliant. 1,555 units in stock.

A6217KLJTR-T - Suitable for applications requiring higher current capacity. Step-Down Buck topology, 3A output current, 6V to 48V supply range, automotive qualification (AEC-Q100), -40°C to 125°C. Package is 8-SOIC-EP. PWM dimming only (no Analog dimming). ROHS3 compliant. 18,300 units in stock.

LM3402HVMMX/NOPB - Acceptable for high-voltage applications. Step-Down Buck topology, 500mA output current (below MP24895GJ-Z), 6V to 75V supply range, automotive grade, -40°C to 125°C. Package is 8-VSSOP. PWM dimming supported. ROHS3 compliant. 2,100 units in stock.

Not Recommended for New Designs:

NCL30160DR2G - Obsolete status. Although specifications are compatible (Step-Down Buck, 1A, 8V to 40V, automotive grade), this part is discontinued and should not be selected for new designs.

LT3517HFE#PBF - Obsolete status and RoHS non-compliant. Not suitable for new designs despite automotive qualification and dual Buck/Boost topology.

Secondary Substitutes (Alternative Topology - Boost Only):

IS31BL3508B-STLS2-TR and LM2704MF-ADJ/NOPB employ Step-Up (Boost) topology and are not direct substitutes. These are applicable only when the application requires voltage step-up functionality and the input supply voltage is below 6V. Operating temperature range is limited to -40°C to 85°C (below MP24895GJ-Z specification). Not recommended as primary alternatives.

Frequently Asked Questions (FAQ)

Q: Can LM3404MAX/NOPB directly replace MP24895GJ-Z without design changes?

A: Electrical specifications are compatible, but the package differs. MP24895GJ-Z uses TSOT-23-5 (5-pin thin SOT-23), while LM3404MAX/NOPB uses 8-SOIC (8-pin). PCB layout and routing must be redesigned. Pin functions require verification against respective datasheets before implementation.

Q: Why is the current rating of LM3407MYX/NOPB (350mA) lower than MP24895GJ-Z (700mA)?

A: LM3407MYX/NOPB is not a suitable substitute for applications requiring 700mA output. This part is listed as a known substitute in the MP24895GJ-Z datasheet but is only applicable to designs with lower current requirements. Verify actual application current demand before selection.

Q: Are Boost topology parts (IS31BL3508B-STLS2-TR, LM2704MF-ADJ/NOPB) usable as substitutes?

A: No, not as direct substitutes. Boost topology converts low input voltage to higher output voltage, whereas Buck topology (MP24895GJ-Z) steps down voltage. Boost parts are only applicable if the system design specifically requires voltage step-up and the input supply is below 6V. Circuit topology and control logic must be redesigned.

Q: What is the impact of package changes on PCB design?

A: Package changes require complete PCB layout redesign. TSOT-23-5 (MP24895GJ-Z) is a 5-pin thin package with 0.95mm pitch. Alternatives such as 8-SOIC (LM3404MAX/NOPB, MIC3202YME) or 8-SOIC-EP (A6217KLJTR-T) have different pin counts, spacing, and thermal characteristics. Thermal management, trace routing, and decoupling capacitor placement must be re-evaluated.

Q: Is automotive qualification mandatory for substitute selection?

A: For automotive applications, yes. MP24895GJ-Z carries automotive grade qualification. Substitutes should maintain equivalent or higher automotive qualification (AEC-Q100 or equivalent). Non-automotive parts introduce reliability and certification risks in automotive systems.

Q: Why is LT3517HFE#PBF marked as obsolete despite favorable specifications?

A: LT3517HFE#PBF is discontinued by the manufacturer and is RoHS non-compliant. Obsolete status indicates no further production or support. New designs must not depend on obsolete parts due to supply chain risk and regulatory non-compliance.

Q: Can I use NCL30160DR2G as a substitute?

A: NCL30160DR2G is obsolete and should not be selected for new designs. Although electrical specifications are compatible, discontinued status creates supply chain vulnerability and lack of manufacturer support.

Q: What dimming capability differences exist between substitutes?

A: MP24895GJ-Z supports both Analog and PWM dimming. Most substitutes (LM3404MAX/NOPB, LM3402HVMMX/NOPB, LM3407MYX/NOPB, MIC3202YME, A6217KLJTR-T) support PWM dimming only. IS31BL3508B-STLS2-TR and LT3517HFE#PBF support both Analog and PWM. If Analog dimming is required, verify substitute datasheet for compatibility before selection.

Q: How do supply voltage ranges affect substitution?

A: MP24895GJ-Z operates from 6V to 36V. Substitutes with narrower ranges (e.g., LM3405AXMKE/NOPB: 3V to 22V) may not cover the full specification. Substitutes with wider ranges (e.g., A6217KLJTR-T: 6V to 48V, LM3402HVMMX/NOPB: 6V to 75V) provide extended operating capability. Verify system supply voltage requirements against substitute specifications.

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

A: MP24895GJ-Z has MSL 1 (Unlimited shelf life). Most substitutes have MSL 1 or MSL 2 (1 Year). MSL 3 parts (IS31BL3508B-STLS2-TR, LM2704MF-ADJ/NOPB) require controlled storage and handling. For high-volume manufacturing, MSL 1 or MSL 2 is preferred to minimize moisture-related failures during assembly.

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