MP24830HS-LF LED Driver Controller Equivalent & Substitute Parts

Part Overview

The MP24830HS-LF is an active LED driver controller IC manufactured by Monolithic Power Systems Inc., designed for backlight applications. This 14-SOIC surface mount device functions as a DC-DC controller supporting both step-down (buck) and step-up (boost) topologies with analog and PWM dimming capabilities. The part operates across a wide supply voltage range of 4.5V to 85V and maintains automotive-grade qualification with an operating temperature range of -40°C to 125°C.

Substitute parts become necessary when the MP24830HS-LF reaches end-of-life status, experiences supply constraints, or when design requirements necessitate alternative package configurations or electrical specifications. The substitute parts listed below maintain functional equivalence within the LED driver controller category while accommodating different packaging, voltage ratings, and thermal specifications.

Substiute Parts

MP24830HS-LF

Monolithic Power Systems Inc.In Stock: 2721MP24830HS-LF Datasheet

Current PartRFQ

AT9933LG-G

Microchip TechnologyIn Stock: 3335AT9933LG-G Datasheet

MFR RecommendedRFQ

HV9910CLG-G

Microchip TechnologyIn Stock: 17459HV9910CLG-G Datasheet

MFR RecommendedRFQ

LT3755EUD#TRPBF

Analog Devices Inc.In Stock: 3921LT3755EUD#TRPBF Datasheet

MFR RecommendedRFQ

LT3761HMSE#PBF

Analog Devices Inc.In Stock: 1070LT3761HMSE#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP24830HS-LF is determined by the following critical parameters:

• Functional Type: DC DC Controller with LED driver capability
• Topology Support: Step-down (buck) and/or step-up (boost) configurations
• Dimming Capability: Analog and/or PWM dimming support
• Supply Voltage Range: Minimum 4.5V input capability with maximum rating of at least 40V
• Number of Outputs: Single output configuration
• Mounting Type: Surface mount technology
• Compliance: ROHS3 compliance and automotive-grade qualification

The four substitute parts listed below meet these core functional requirements while offering variations in package type, maximum supply voltage rating, and thermal specifications. Each substitute maintains the essential LED driver controller functionality required for backlight applications.

Parameter Comparison

Engineering Selection Recommendations

AT9933LG-G (Microchip Technology): This substitute maintains step-down and step-up topology support with a maximum supply voltage of 75V, suitable for applications within the 4.5V to 75V range. The 8-SOIC package reduces board footprint compared to the 14-SOIC original. Automotive-grade qualification and ROHS3 compliance are maintained. PWM dimming is supported; however, analog dimming capability is not specified. This part is recommended for designs where supply voltage does not exceed 75V and PWM-only dimming is acceptable.

HV9910CLG-G (Microchip Technology): This substitute supports a significantly higher maximum supply voltage of 450V, making it suitable for high-voltage backlight and lighting applications. The topology is limited to step-down (buck) configuration. The 8-SOIC package matches the footprint of AT9933LG-G. Both analog and PWM dimming are supported. Operating temperature range matches the original part. This part is recommended for high-voltage applications where step-down topology is sufficient and the extended voltage range is required.

LT3755EUD#TRPBF (Analog Devices Inc.): This substitute offers extended topology support including Flyback and SEPIC configurations in addition to buck and boost modes. The maximum supply voltage is limited to 40V. The 16-QFN package with exposed pad provides thermal management advantages. Analog and PWM dimming are both supported. Operating temperature range is 0°C to 125°C, which does not extend to -40°C. ROHS3 compliance is maintained. This part is recommended for designs requiring flexible topology options within the 4.5V to 40V range and where the higher operating temperature minimum is acceptable.

LT3761HMSE#PBF (Analog Devices Inc.): This substitute provides the broadest topology support with Flyback, SEPIC, step-down, and step-up configurations. Maximum supply voltage is 60V. The 16-MSOP package with exposed pad provides thermal management. Analog and PWM dimming are supported. Operating temperature range extends to -40°C to 150°C, providing superior low-temperature performance. ROHS3 compliance is maintained. This part is recommended for designs requiring maximum topology flexibility and extended temperature performance within the 4.5V to 60V supply range.

Frequently Asked Questions (FAQ)

Q: Can AT9933LG-G replace MP24830HS-LF in all applications?

A: AT9933LG-G is functionally equivalent for applications operating within 4.5V to 75V supply range where PWM dimming is the primary control method. The reduced pin count (8-SOIC versus 14-SOIC) requires PCB layout verification. Analog dimming capability is not specified for AT9933LG-G; if analog dimming is required, alternative substitutes must be evaluated.

Q: What is the primary advantage of HV9910CLG-G?

A: HV9910CLG-G supports supply voltages up to 450V, enabling use in high-voltage lighting and signage applications where MP24830HS-LF cannot operate. The trade-off is topology limitation to step-down (buck) configuration only. This part is not suitable for applications requiring boost topology.

Q: Are LT3755EUD#TRPBF and LT3761HMSE#PBF interchangeable?

A: Both Analog Devices parts support identical dimming modes (analog and PWM) and extended topologies (Flyback, SEPIC, buck, boost). The primary differences are maximum supply voltage (40V versus 60V) and operating temperature range (0°C to 125°C versus -40°C to 150°C). Selection depends on specific voltage and temperature requirements. Package types differ (16-QFN versus 16-MSOP), requiring separate PCB layout designs.

Q: Does package size affect substitution eligibility?

A: Package size is a critical design consideration but does not affect functional substitution eligibility. AT9933LG-G and HV9910CLG-G use 8-SOIC packages with reduced pin counts, requiring PCB redesign. LT3755EUD#TRPBF and LT3761HMSE#PBF use 16-pin packages with different footprints. Pin-to-pin compatibility must be verified against schematic requirements before implementation.

Q: Which substitute is recommended for automotive applications?

A: MP24830HS-LF and AT9933LG-G both carry explicit automotive-grade qualification. For automotive backlight applications within the 4.5V to 75V range, AT9933LG-G is the preferred substitute. HV9910CLG-G, LT3755EUD#TRPBF, and LT3761HMSE#PBF do not specify automotive-grade qualification in the provided data.

Q: What is the impact of operating temperature range differences?

A: MP24830HS-LF operates from -40°C to 125°C. LT3755EUD#TRPBF has a minimum operating temperature of 0°C, which may be unsuitable for applications requiring full -40°C operation. LT3761HMSE#PBF extends to 150°C maximum, providing superior high-temperature performance. Temperature range selection must align with application environmental specifications.