MP24830HL-LF-Z Equivalent & Substitute Parts

Part Overview

The MP24830HL-LF-Z is an LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device functions as a DC DC Controller supporting both Step-Down (Buck) and Step-Up (Boost) topologies with single output configuration. The part is designed for backlight and lighting applications, featuring Analog and PWM dimming capabilities. With active product status and automotive-grade qualification, the MP24830HL-LF-Z operates across a wide supply voltage range of 4.5V to 90V and maintains operational temperature stability from -40°C to 125°C. Substitute parts are identified when equivalent functional performance is required due to inventory constraints, design flexibility, or application-specific requirements while maintaining compliance with automotive and RoHS standards.

Substiute Parts

MP24830HL-LF-Z

Monolithic Power Systems Inc.In Stock: 42943MP24830HL-LF-Z Datasheet

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LM3429MHX/NOPB

Texas InstrumentsIn Stock: 21494LM3429MHX/NOPB Datasheet

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LM3429Q1MHX/NOPB

Texas InstrumentsIn Stock: 35419LM3429Q1MHX/NOPB Datasheet

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MAX1698AEUB+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2934MAX1698AEUB+T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP24830HL-LF-Z are identified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• DC DC Controller type with single output configuration
• Support for both Analog and PWM dimming functionality
• Automotive-grade qualification or equivalent reliability standard
• Operating temperature range of -40°C to 125°C (TJ)
• ROHS3 compliance and MSL 1 rating
• Surface mount packaging with active product status

Topology Considerations: The MP24830HL-LF-Z supports Step-Down (Buck) and Step-Up (Boost) topologies. Substitute parts are grouped based on topology support:

• Group 1 (Full Topology Match): Parts supporting both Buck and Boost topologies with SEPIC capability
• Group 2 (Partial Topology Match): Parts supporting Boost topology only, applicable for specific application requirements

Voltage Supply Range: The main part operates from 4.5V to 90V. Substitute parts with narrower voltage ranges are acceptable when the application operates within the substitute's specified range.

Dimming Capability: Both Analog and PWM dimming support is required for direct substitution in lighting applications requiring brightness control.

Parameter Comparison

Engineering Selection Recommendations

LM3429MHX/NOPB and LM3429Q1MHX/NOPB (Texas Instruments)

These parts represent the closest functional equivalents to the MP24830HL-LF-Z. Both devices support SEPIC, Step-Down (Buck), and Step-Up (Boost) topologies with single output configuration, Analog and PWM dimming, and automotive-grade qualification. The LM3429Q1MHX/NOPB carries explicit AEC-Q100 qualification, providing enhanced reliability documentation for automotive applications. Both parts operate within the 4.5V to 75V supply range, which covers the majority of automotive lighting applications. The 2MHz switching frequency provides higher frequency operation compared to the MP24830HL-LF-Z range of 30kHz to 465kHz. Both maintain the -40°C to 125°C operating temperature range and ROHS3 compliance. Package differences exist: these parts use 14-PowerTSSOP versus the MP24830HL-LF-Z 14-VFDFN Exposed Pad, requiring PCB layout modifications. Inventory availability is substantial for both variants.

MAX1698AEUB+T (Analog Devices Inc./Maxim Integrated)

This part is applicable only for applications requiring Step-Up (Boost) topology exclusively. The MAX1698AEUB+T operates within a narrower supply voltage range of 2.7V to 5.5V, limiting its use to low-voltage backlight applications. The operating temperature range is -40°C to 85°C, which is 40°C lower than the main part's maximum junction temperature. Dimming capability and switching frequency are not specified in the provided parameters. The 10-uMAX/uSOP package is significantly smaller than the main part, offering space advantages but requiring different PCB design considerations. This part is suitable for low-voltage LED backlight applications where boost-only topology is acceptable and thermal constraints are less stringent.

Frequently Asked Questions (FAQ)

Q1: Can LM3429MHX/NOPB directly replace MP24830HL-LF-Z in existing designs?

A: Functional replacement is possible due to matching topology support (Buck and Boost), dimming capabilities (Analog and PWM), and automotive-grade qualification. However, package differences require PCB layout modifications. The LM3429MHX/NOPB uses 14-PowerTSSOP packaging versus the MP24830HL-LF-Z 14-VFDFN Exposed Pad, necessitating footprint redesign. The maximum supply voltage is reduced from 90V to 75V, which must be verified against application requirements.

Q2: What is the difference between LM3429MHX/NOPB and LM3429Q1MHX/NOPB?

A: Both parts are functionally identical with matching electrical specifications. The primary distinction is that LM3429Q1MHX/NOPB carries explicit AEC-Q100 automotive qualification certification, providing enhanced reliability and qualification documentation. For automotive applications requiring formal AEC-Q100 compliance documentation, the LM3429Q1MHX/NOPB is the preferred selection. Inventory availability is higher for the LM3429Q1MHX/NOPB variant.

Q3: Is MAX1698AEUB+T suitable for all MP24830HL-LF-Z applications?

A: No. The MAX1698AEUB+T supports only Step-Up (Boost) topology, whereas the MP24830HL-LF-Z supports both Step-Down (Buck) and Step-Up (Boost). Applications requiring buck conversion cannot use this substitute. Additionally, the supply voltage range is limited to 2.7V to 5.5V, restricting use to low-voltage backlight applications. The operating temperature maximum of 85°C is lower than the main part's 125°C. This part is applicable only for specific low-voltage boost-only LED backlight designs.

Q4: What are the package compatibility considerations?

A: The MP24830HL-LF-Z uses 14-VFDFN Exposed Pad packaging. The LM3429 variants use 14-PowerTSSOP, and the MAX1698AEUB+T uses 10-uMAX/uSOP. Each package has different pin configurations, thermal characteristics, and PCB footprints. Direct socket replacement is not possible. PCB redesign is required for any package change, including trace routing, thermal via placement, and component placement optimization.

Q5: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (LM3429MHX/NOPB, LM3429Q1MHX/NOPB, and MAX1698AEUB+T) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the MP24830HL-LF-Z compliance profile.

Q6: What is the frequency difference impact?

A: The MP24830HL-LF-Z operates at 30kHz to 465kHz, while the LM3429 variants operate at 2MHz fixed frequency. Higher switching frequency reduces output filter size but increases switching losses. The MAX1698AEUB+T frequency is not specified. Application-specific analysis is required to determine if frequency differences affect performance in target applications.

Q7: Can these parts be used interchangeably in automotive lighting applications?

A: The LM3429MHX/NOPB and LM3429Q1MHX/NOPB are suitable for automotive lighting applications with PCB redesign due to matching automotive-grade qualification and topology support. The MAX1698AEUB+T is limited to low-voltage backlight applications only. All parts maintain the -40°C to 125°C operating range required for automotive environments, with the exception of MAX1698AEUB+T which is limited to -40°C to 85°C.