MP24833GN-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP24833GN-Z is a LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) device. This component functions as a 1-output DC DC regulator with integrated Step-Down (Buck) and Step-Up (Boost) topology, delivering 3A output current with Analog and PWM dimming capabilities. The device is rated for automotive applications and operates across a supply voltage range of 4.5V to 55V.

The MP24833GN-Z carries a product status of "Not For New Designs," indicating it is obsolete or being phased out. This status necessitates identification of active, functionally equivalent substitute components to maintain design continuity and ensure long-term component availability for production and field support.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP24833GN-Z
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Down (Buck), Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	4.5V
Voltage - Supply (Max)	55V
Current - Output / Channel	3A
Frequency	200kHz
Dimming	Analog, PWM
Applications	Backlight
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant
Grade	Automotive

Substitute Part Grouping Explanation

Substitution of the MP24833GN-Z requires matching or exceeding the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Topology: Step-Down (Buck), Step-Up (Boost) dual-mode capability
Output Current: Minimum 3A capability
Supply Voltage Range: Minimum 4.5V to 55V coverage
Dimming Support: Analog and PWM dimming functionality
Package Compatibility: Surface mount with exposed pad design
Product Status: Active or current production status

Secondary Compatibility Factors:

Operating Temperature Range: -40°C to 125°C or better
Frequency: 200kHz nominal operation
RoHS3 Compliance and automotive-grade certification

The substitute parts identified below are grouped into two categories based on topology alignment and electrical performance:

Group 1 - Full Topology Match (Buck-Boost): Parts maintaining both Step-Down and Step-Up capability with 3A or higher output current.

Group 2 - Partial Topology Match (Buck-Only or Boost-Only): Parts with single topology but meeting output current and voltage range requirements, suitable for applications where dual-mode operation is not essential.

Parameter Comparison

Parameter	MP24833GN-Z	LT3517EFE#TRPBF	LT3518HUF#TRPBF	NCP3066MNTXG	LED2000DR	MIC3202YME-TR
Topology	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck	Buck
Supply Voltage Min	4.5V	3V	3V	3V	3V	6V
Supply Voltage Max	55V	30V	30V	40V	18V	37V
Output Current	3A	1.5A (Switch)	2.3A (Switch)	1.5A (Switch)	3A	1A
Frequency	200kHz	250kHz ~ 2.5MHz	250kHz ~ 2.5MHz	150kHz	850kHz	1MHz
Dimming	Analog, PWM	Analog, PWM	Analog, PWM	Analog, PWM	PWM	PWM
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 150°C (TJ)	0°C ~ 85°C (TA)	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)
Package	8-SOIC-EP	16-TSSOP-EP	16-QFN (4x4)	8-DFN (4x4)	8-SOIC	8-SOIC-EP
Product Status	Not For New Designs	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Full Topology Substitutes (Buck-Boost Capable):

LT3517EFE#TRPBF and LT3518HUF#TRPBF from Analog Devices Inc. maintain the dual Buck-Boost topology of the MP24833GN-Z. Both devices are in Active product status with ROHS3 compliance. The LT3517EFE#TRPBF operates at 1.5A output current in a 16-TSSOP-EP package, while the LT3518HUF#TRPBF delivers 2.3A in a 16-QFN (4x4) package. Both support Analog and PWM dimming and operate across -40°C to 125°C or better. The LT3518HUF#TRPBF offers extended temperature operation to 150°C (TJ), suitable for automotive applications requiring higher thermal margins.

NCP3066MNTXG from onsemi provides Buck-Boost topology with 1.5A output current in an 8-DFN (4x4) package. This device is Active status and ROHS3 compliant. Operating temperature range is 0°C to 85°C (TA), which is narrower than the MP24833GN-Z specification and may not be suitable for full automotive temperature range applications.

Partial Topology Substitutes (Buck-Only):

LED2000DR from STMicroelectronics is an Active, ROHS3-compliant device delivering 3A output current in an 8-SOIC package, matching the current capacity of the MP24833GN-Z. However, this device supports only Step-Down (Buck) topology and PWM dimming without Analog dimming capability. Supply voltage range is 3V to 18V, which does not cover the full 4.5V to 55V range of the original part. Operating temperature extends to 150°C (TJ), exceeding automotive requirements.

MIC3202YME-TR from Microchip Technology is an Active, ROHS3-compliant Buck-only regulator with 1A output current in an 8-SOIC-EP package. Supply voltage range is 6V to 37V, and it supports PWM dimming only. Output current is insufficient for direct replacement in 3A applications.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and are in Active product status, ensuring long-term availability and manufacturing support. Selection should prioritize topology match (Buck-Boost preferred) and output current capability (3A minimum for direct replacement) based on specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can LED2000DR replace MP24833GN-Z in all applications?

A: LED2000DR is suitable only for applications requiring Step-Down (Buck) topology with 3A output current and PWM dimming. It cannot replace MP24833GN-Z in designs requiring Step-Up (Boost) capability or Analog dimming. Additionally, the maximum supply voltage of 18V does not support the full 4.5V to 55V range of the original part.

Q: What is the primary limitation of NCP3066MNTXG as a substitute?

A: NCP3066MNTXG operates within a 0°C to 85°C temperature range (TA), which does not meet the -40°C to 125°C (TJ) automotive specification of the MP24833GN-Z. This device is suitable only for applications with relaxed temperature requirements.

Q: Are LT3517EFE#TRPBF and LT3518HUF#TRPBF pin-compatible with MP24833GN-Z?

A: No. LT3517EFE#TRPBF uses a 16-TSSOP-EP package and LT3518HUF#TRPBF uses a 16-QFN (4x4) package, both different from the 8-SOIC-EP package of MP24833GN-Z. PCB layout redesign is required for these substitutes.

Q: Which substitute provides the closest electrical match to MP24833GN-Z?

A: LT3518HUF#TRPBF offers the closest match, providing Buck-Boost topology, 2.3A output current, Analog and PWM dimming support, 3V to 30V supply range, and extended operating temperature to 150°C (TJ). However, the 30V maximum supply voltage does not cover the full 55V range of the original part.

Q: Can MIC3202YME-TR be used in high-current LED driver applications?

A: No. MIC3202YME-TR is rated for 1A output current, which is insufficient for applications requiring 3A. This device is suitable only for lower-current LED driver implementations.

Q: What package considerations apply when selecting a substitute?

A: The MP24833GN-Z uses an 8-SOIC-EP package. Substitutes with different packages (16-TSSOP-EP, 16-QFN, 8-DFN) require PCB redesign, including trace routing, thermal management, and component placement modifications. Package selection should account for thermal dissipation requirements and available PCB real estate.

Q: Do all substitutes maintain RoHS3 compliance?

A: Yes. All identified substitutes are ROHS3 compliant, matching the environmental compliance status of the MP24833GN-Z.

Q: Is Analog dimming capability essential for LED driver applications?

A: Analog dimming support depends on application requirements. If the design uses only PWM dimming, Buck-only devices such as LED2000DR or MIC3202YME-TR may be considered. If Analog dimming is required, Buck-Boost devices such as LT3517EFE#TRPBF or LT3518HUF#TRPBF must be selected.

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