MP24892DJ-LF-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP24892DJ-LF-Z is an active-status LED driver IC manufactured by Monolithic Power Systems Inc., designed for step-down (buck) topology DC-DC regulation with 1A output current capability. This device integrates PWM and analog dimming control, operating across a 6V to 45V supply range with a 600kHz switching frequency. The part is housed in a TSOT-23-5 surface mount package and is automotive-grade with ROHS3 compliance.

Substitute parts are identified when design requirements necessitate alternative packaging formats, higher current ratings, extended supply voltage ranges, or different thermal operating specifications while maintaining core LED driver functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP24892DJ-LF-Z
Manufacturer	Monolithic Power Systems Inc.
Product Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck)
Package / Case	SOT-23-5 Thin, TSOT-23-5
Voltage - Supply (Min)	6V
Voltage - Supply (Max)	45V
Current - Output / Channel	1A
Frequency	600kHz
Dimming	Analog, PWM
Operating Temperature	-40°C ~ 125°C (TJ)
Grade	Automotive
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Parameters:

Topology: Step-Down (Buck) configuration
Dimming capability: Analog and/or PWM support
Supply voltage range: Minimum 6V input capability
Output current: 1A or greater
Package type: Surface mount (TSOT-23-5, 8-SOIC, 8-MSOP, or equivalent)
Compliance: ROHS3 and automotive-grade preferred

Substitution Categories:

Parametric Equivalents – Identical electrical specifications with packaging or inventory variations (MP24892DJ-LF-P, MP2489DJ-LF-Z)
Manufacturer Recommended Alternatives – Different manufacturers with compatible or superior electrical ratings and active product status (A6211GLJTR-T, AL8861MP-13, AP8803WTG-7, LM3405AXMK/NOPB, MAX20051AUD/V+T, LED2000PUR)
Functional Alternatives – Parts with higher current ratings or extended operating ranges suitable for similar applications (A6211GLJTR-T at 3A, MAX20051AUD/V+T at 2A)

Parameter Comparison

Part Number	Manufacturer	Topology	Package	Supply Min	Supply Max	Output Current	Frequency	Dimming	Temp Range	Status
MP24892DJ-LF-Z	MPS	Buck	TSOT-23-5	6V	45V	1A	600kHz	Analog, PWM	-40 to 125°C	Active
MP24892DJ-LF-P	MPS	Buck	TSOT-23-5	6V	45V	1A	600kHz	Analog, PWM	-40 to 125°C	Active
MP2489DJ-LF-Z	MPS	Buck	TSOT-23-5	6V	60V	1A	600kHz	Analog, PWM	-40 to 125°C	Active
A6211GLJTR-T	Allegro	Buck	8-SOIC-EP	6V	48V	3A	—	PWM	-40 to 105°C	Active
AL8861MP-13	Diodes	Buck	8-MSOP-EP	4.5V	40V	1.5A	1MHz	Analog, PWM	-40 to 85°C	Active
AP8801SG-13	Diodes	Buck	8-SOP	8V	48V	500mA	625kHz	Analog, PWM	-40 to 105°C	Not For New Designs
AP8803WTG-7	Diodes	Buck	TSOT-23-5	8V	30V	1A	700kHz	Analog, PWM	-40 to 125°C	Active
LED2000PUR	STMicroelectronics	Buck	8-VFQFPN	3V	18V	3A	850kHz	PWM	-40 to 150°C	Active
LM3405AXMK/NOPB	Texas Instruments	Buck	TSOT-23-6	3V	22V	1A	1.6MHz	PWM	-40 to 125°C	Active
MAX1577ZETA+T	Analog Devices/Maxim	Charge Pump	8-TDFN	2.7V	5.5V	800mA	1MHz	PWM	-40 to 85°C	Active
MAX20051AUD/V+T	Analog Devices/Maxim	Buck	14-TSSOP-EP	4.5V	65V	2A	400kHz	Analog, PWM	-40 to 125°C	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Performance):

MP24892DJ-LF-P and MP2489DJ-LF-Z are parametric equivalents of MP24892DJ-LF-Z. MP24892DJ-LF-P differs only in packaging format (Tape & Reel vs. Cut Tape). MP2489DJ-LF-Z extends the maximum supply voltage to 60V while maintaining all other specifications. Both are active-status, ROHS3-compliant products from the same manufacturer.

Recommended Alternatives (Active Status, ROHS3 Compliant):

AP8803WTG-7 (Diodes Incorporated) is the closest functional match: identical TSOT-23-5 package, 1A output current, analog and PWM dimming, and -40 to 125°C operating range. Supply voltage range is narrower (8V to 30V) compared to the main part (6V to 45V).

LM3405AXMK/NOPB (Texas Instruments) provides 1A output in TSOT-23-6 package with PWM dimming. Operating range is 3V to 22V, narrower than the main part. Frequency is higher at 1.6MHz.

AL8861MP-13 (Diodes Incorporated) offers 1.5A output with analog and PWM dimming in 8-MSOP-EP package. Supply range is 4.5V to 40V. Operating temperature is limited to -40 to 85°C.

MAX20051AUD/V+T (Analog Devices/Maxim) provides 2A output with extended supply range (4.5V to 65V) and analog/PWM dimming. Package is 14-TSSOP-EP, larger than the main part. Suitable for higher-current applications.

A6211GLJTR-T (Allegro MicroSystems) offers 3A output in 8-SOIC-EP package with PWM dimming. Supply range is 6V to 48V. Operating temperature is -40 to 105°C. Suitable for applications requiring higher current capacity.

LED2000PUR (STMicroelectronics) provides 3A output with PWM dimming in 8-VFQFPN package. Supply range is 3V to 18V, significantly narrower than the main part. Operating temperature extends to 150°C.

Not Recommended for New Designs:

AP8801SG-13 (Diodes Incorporated) is marked "Not For New Designs" and should not be selected for new applications despite meeting some electrical criteria.

Topology Deviation:

MAX1577ZETA+T uses switched capacitor (charge pump) topology rather than buck topology. This part is suitable only for applications with low input voltage (2.7V to 5.5V) and is not a general substitute for the main part.

Frequently Asked Questions (FAQ)

Q: Can I use AP8803WTG-7 as a direct replacement for MP24892DJ-LF-Z?

A: AP8803WTG-7 is functionally compatible for most applications. Both use TSOT-23-5 packaging, support 1A output with analog and PWM dimming, and operate across -40 to 125°C. However, AP8803WTG-7 has a narrower supply voltage range (8V to 30V vs. 6V to 45V). Verify your circuit's input voltage does not fall below 8V before substitution.

Q: What is the difference between MP24892DJ-LF-Z and MP2489DJ-LF-Z?

A: Both parts are identical except MP2489DJ-LF-Z supports a higher maximum supply voltage of 60V compared to 45V for MP24892DJ-LF-Z. All other electrical specifications, package type, and operating temperature range are identical. MP2489DJ-LF-Z is suitable if your application requires higher input voltage capability.

Q: Why is AP8801SG-13 listed but marked "Not For New Designs"?

A: AP8801SG-13 meets the electrical criteria for substitution (buck topology, 500mA output, analog/PWM dimming, ROHS3 compliant). However, Diodes Incorporated has discontinued this part for new designs. Existing inventory may be available, but new product development should use active-status alternatives such as AP8803WTG-7 or AL8861MP-13.

Q: Can I use MAX20051AUD/V+T if I need higher current capacity?

A: Yes. MAX20051AUD/V+T provides 2A output current (double the main part) with extended supply voltage range (4.5V to 65V) and analog/PWM dimming support. The 14-TSSOP-EP package is larger than TSOT-23-5, requiring PCB layout modifications. Operating temperature range matches the main part (-40 to 125°C).

Q: Is MAX1577ZETA+T compatible with MP24892DJ-LF-Z?

A: No. MAX1577ZETA+T uses switched capacitor (charge pump) topology, fundamentally different from the buck topology of MP24892DJ-LF-Z. Additionally, its supply voltage range (2.7V to 5.5V) is incompatible with the main part's 6V minimum requirement. This part is suitable only for low-voltage applications requiring charge pump regulation.

Q: What packaging options are available for LED driver substitutes?

A: Substitutes are available in multiple packages: TSOT-23-5 (AP8803WTG-7, MP24892DJ-LF-P), TSOT-23-6 (LM3405AXMK/NOPB), 8-SOIC-EP (A6211GLJTR-T), 8-MSOP-EP (AL8861MP-13), 8-SOP (AP8801SG-13), 8-VFQFPN (LED2000PUR), 8-TDFN (MAX1577ZETA+T), and 14-TSSOP-EP (MAX20051AUD/V+T). Package selection depends on PCB space constraints and thermal management requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the main part's environmental compliance status.

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