MP4057AGS-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4057AGS-Z is an active AC DC offline switcher LED driver IC manufactured by Monolithic Power Systems Inc. This single-stage, single-chip solution integrates a PWM dimming controller with internal switching capability for LED lighting applications. The device operates across a 4V to 25V supply range and supports multiple topologies including Flyback, Step-Down (Buck), and Step-Up (Boost) configurations. As an active product with ROHS3 compliance and MSL 2 rating, equivalent substitute parts are identified to provide design flexibility, inventory alternatives, and supply chain redundancy for LED driver applications.

Substiute Parts

MP4057AGS-Z

Monolithic Power Systems Inc.In Stock: 1134MP4057AGS-Z Datasheet

Current PartRFQ

AL9901FDF-13

Diodes IncorporatedIn Stock: 8972AL9901FDF-13 Datasheet

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MXHV9910BTR

IXYS Integrated Circuits DivisionIn Stock: 2324MXHV9910BTR Datasheet

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RT7306DGS

Richtek USA Inc.In Stock: 10753RT7306DGS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP4057AGS-Z are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Product Category: Power Management (PMIC) - LED Driver IC
• Product Type: AC DC Offline Switcher
• Number of Outputs: 1
• Dimming Control Method: PWM or Analog
• Applications: LED Lighting, Backlight, Signage
• RoHS Compliance: ROHS3 Compliant
• Product Status: Active

Secondary Compatibility Factors:

• Supply Voltage Range: Overlap or compatibility with 4V-25V nominal range
• Topology Support: Flyback, Buck, or Boost configurations
• Package Type: Surface Mount SOIC variants
• Operating Temperature Range: -40°C minimum and 125°C or higher maximum
• Mounting Compatibility: Tape & Reel or equivalent packaging

The three identified substitute parts (RT7306DGS, AL9901FDF-13, MXHV9910BTR) meet the core functional requirements as single-output AC DC offline switcher LED driver ICs with active product status and ROHS3 compliance. Each substitute maintains compatibility with LED lighting applications while offering alternative topologies, supply voltage ranges, and dimming control methods.

Parameter Comparison

Engineering Selection Recommendations

RT7306DGS (Richtek USA Inc.)

The RT7306DGS is functionally equivalent to the MP4057AGS-Z for applications requiring Flyback, Buck, or Boost topology support. Both devices share identical topology flexibility and operating temperature range (-40°C to 125°C junction temperature). The RT7306DGS operates across 11V to 34V supply range, which overlaps the MP4057AGS-Z range above 11V. This substitute is suitable for designs where the minimum supply voltage requirement is 11V or higher. The RT7306DGS uses Analog dimming control versus PWM on the main part; applications requiring PWM dimming must account for this control method difference. Both devices are ROHS3 compliant and active products. Package difference: RT7306DGS uses 8-SOIC versus 14-SOIC for MP4057AGS-Z, requiring PCB layout modification.

AL9901FDF-13 (Diodes Incorporated)

The AL9901FDF-13 is a single-output AC DC offline switcher LED driver with Buck topology and integrated internal switch. This substitute supports both Analog and PWM dimming control, providing flexibility for the MP4057AGS-Z PWM requirement. The AL9901FDF-13 operates across 15V to 500V supply range, requiring minimum 15V input; designs operating below 15V cannot use this substitute. The device includes 400mA switch current rating and 7.5V output specification. Operating temperature range is -40°C to 105°C (ambient), which is lower than the MP4057AGS-Z maximum of 125°C junction temperature. AL9901FDF-13 is ROHS3 compliant and active. Package: 12-UDFN Exposed Pad differs from 14-SOIC, requiring PCB redesign. MSL rating is 1 (Unlimited) versus MSL 2 (1 Year) for main part.

MXHV9910BTR (IXYS Integrated Circuits Division)

The MXHV9910BTR is a single-output AC DC offline switcher LED driver with Buck topology and PWM dimming control, matching the main part's dimming method. This substitute operates across 8V to 450V supply range, compatible with designs requiring minimum 8V input. The MXHV9910BTR operates at 64kHz frequency and does not include internal switch (external switch required). Operating temperature range is -40°C to 85°C (ambient), lower than MP4057AGS-Z. MXHV9910BTR is ROHS3 compliant and active. Package: 8-SOIC matches the MP4057AGS-Z package width (0.154", 3.90mm) but uses 8-pin versus 14-pin configuration. MSL rating is 1 (Unlimited).

Selection Basis:

All three substitutes are active products with ROHS3 compliance, meeting regulatory and supply chain continuity requirements. Selection among substitutes depends on: (1) minimum supply voltage requirement, (2) topology flexibility needs, (3) dimming control method compatibility, (4) operating temperature range, and (5) PCB layout constraints related to package differences.

Frequently Asked Questions (FAQ)

Q1: Can the RT7306DGS replace the MP4057AGS-Z in all applications?

The RT7306DGS shares topology flexibility (Flyback, Buck, Boost) and operating temperature range with the MP4057AGS-Z. However, substitution is limited to designs with minimum supply voltage of 11V or higher. The RT7306DGS uses Analog dimming control; applications requiring PWM dimming must evaluate control circuit compatibility. Package difference (8-SOIC versus 14-SOIC) requires PCB layout modification.

Q2: What is the key difference between AL9901FDF-13 and the main part?

The AL9901FDF-13 supports only Buck topology, whereas the MP4057AGS-Z supports Flyback, Buck, and Boost. The AL9901FDF-13 requires minimum 15V supply input versus 4V for the main part. The AL9901FDF-13 includes specified output voltage (7.5V) and switch current (400mA), whereas the MP4057AGS-Z does not specify these parameters. Operating temperature maximum is 105°C (ambient) versus 125°C (junction) for the main part.

Q3: Is the MXHV9910BTR suitable for low-voltage applications below 8V?

No. The MXHV9910BTR minimum supply voltage is 8V. Applications requiring operation below 8V must use the MP4057AGS-Z (4V minimum) or evaluate other substitutes with lower minimum voltage specifications.

Q4: How does the internal switch requirement affect substitution?

The MP4057AGS-Z includes an internal switch. The RT7306DGS and MXHV9910BTR do not include internal switches, requiring external switch components in the design. The AL9901FDF-13 includes an internal switch. Designs using the MP4057AGS-Z with internal switch cannot directly substitute RT7306DGS or MXHV9910BTR without adding external switching components.

Q5: Are all substitutes compatible with PWM dimming control?

The MP4057AGS-Z and MXHV9910BTR both use PWM dimming. The AL9901FDF-13 supports both Analog and PWM dimming. The RT7306DGS uses Analog dimming only. Applications requiring PWM dimming should prioritize MXHV9910BTR or AL9901FDF-13 (configured for PWM mode).

Q6: What packaging considerations apply to these substitutes?

The MP4057AGS-Z uses 14-SOIC (0.154", 3.90mm width). The RT7306DGS and MXHV9910BTR use 8-SOIC (0.154", 3.90mm width) with matching width but different pin count. The AL9901FDF-13 uses 12-UDFN Exposed Pad, a different package family. Package substitution requires PCB layout redesign and footprint verification.

Q7: Which substitute has the widest supply voltage range?

The AL9901FDF-13 operates across 15V to 500V, the widest range among substitutes. The MXHV9910BTR operates 8V to 450V. The RT7306DGS operates 11V to 34V. The MP4057AGS-Z operates 4V to 25V. Selection depends on the specific supply voltage requirements of the application.

Q8: Do all substitutes meet the same compliance standards as the main part?

All four parts (MP4057AGS-Z, RT7306DGS, AL9901FDF-13, MXHV9910BTR) are ROHS3 compliant, active products, and carry EAR99 ECCN classification. All are REACH Unaffected. Moisture sensitivity levels differ: MP4057AGS-Z is MSL 2 (1 Year); RT7306DGS is MSL 3 (168 Hours); AL9901FDF-13 and MXHV9910BTR are MSL 1 (Unlimited).