RT7304AGE LED Driver IC - Equivalent & Substitute Parts

Part Overview

The RT7304AGE is an AC DC offline switcher LED driver IC manufactured by Richtek USA Inc., designed for lighting applications. This single-output device operates across a 11V to 34V supply range and supports multiple topologies including Flyback, Step-Down (Buck), and Step-Up (Boost) configurations. The part is currently active in production with 17,719 units in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative package configurations or electrical specifications within the same functional category.

Substiute Parts

RT7304AGE

Richtek USA Inc.In Stock: 17822RT7304AGE Datasheet

Current PartRFQ

RT7304GE

Richtek USA Inc.In Stock: 23510RT7304GE Datasheet

Parametric EquivalentRFQ

MP4653GY-Z

Monolithic Power Systems Inc.In Stock: 63896MP4653GY-Z Datasheet

SimilarRFQ

NCL30030B3DR2G

onsemiIn Stock: 20139NCL30030B3DR2G Datasheet

SimilarRFQ

UCC28811D

Texas InstrumentsIn Stock: 3480UCC28811D Datasheet

SimilarRFQ

XDPL8105XUMA1

Infineon TechnologiesIn Stock: 35458XDPL8105XUMA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RT7304AGE are classified based on the following substitution criteria:

Parametric Equivalent: Parts sharing identical functional topology, single output configuration, and compatible supply voltage ranges within the AC DC offline switcher category.

Similar Parts: Components with the same functional purpose (LED driver IC, AC DC offline switcher, single output) but differing in one or more of the following: package type, topology variant, supply voltage range, or dimming method.

The key parameters determining substitutability are:

• Type: AC DC Offline Switcher
• Number of Outputs: 1
• Voltage - Supply range compatibility
• Package / Case form factor
• Mounting Type: Surface Mount
• Operating Temperature range
• RoHS3 Compliance

Parameter Comparison

Engineering Selection Recommendations

RT7304GE (Parametric Equivalent): This Richtek part maintains identical topology support (Flyback, Step-Down, Step-Up) and package configuration (SOT-23-6) as the RT7304AGE. The supply voltage range is narrower (12V to 25V versus 11V to 34V), requiring verification that your application operates within this reduced window. Both parts carry ROHS3 compliance and identical MSL ratings. This represents the closest functional equivalent with the same manufacturer and package footprint.

MP4653GY-Z (Similar - Half-Bridge Topology): Monolithic Power Systems' part operates across 9V to 30V and supports Half-Bridge topology with Analog and PWM dimming capabilities. The 20-SOIC package requires PCB layout modification compared to the SOT-23-6 footprint. This part extends the lower supply voltage limit to 9V and includes dimming features not specified in the RT7304AGE datasheet.

NCL30030B3DR2G (Similar - Flyback Topology): onsemi's offering covers 9V to 30V with Flyback topology in a 16-SOIC package. This part features MSL rating of 1 (Unlimited), providing superior moisture tolerance compared to the RT7304AGE's MSL 3 rating. Package change from SOT-23-6 to 16-SOIC requires PCB redesign.

UCC28811D (Similar - Triac Dimming): Texas Instruments' part supports Flyback, Step-Down, and Step-Up topologies with Triac dimming in an 8-SOIC package. The maximum supply voltage is limited to 18V, and the operating temperature range is reduced to -40°C to 105°C. This part is suitable only for applications within these narrower specifications.

XDPL8105XUMA1 (Similar - Flyback Topology): Infineon's XDP™ series part operates across 6V to 24V with Flyback topology in an 8-SOIC package. The operating temperature maximum is 85°C (TA), the lowest among all substitutes. This part is appropriate for applications with lower temperature requirements and extended lower voltage support.

All substitute parts maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment with the original RT7304AGE.

Frequently Asked Questions (FAQ)

Q: Can RT7304GE directly replace RT7304AGE without PCB modifications?

A: Yes, RT7304GE uses the identical SOT-23-6 package and maintains the same pinout. However, verify that your application's supply voltage operates within the narrower 12V to 25V range specified for RT7304GE, as the RT7304AGE supports 11V to 34V.

Q: Why do some substitute parts use different package types?

A: Package diversity reflects different design approaches and feature sets. MP4653GY-Z uses 20-SOIC to accommodate additional circuitry for Half-Bridge topology and dual dimming methods. NCL30030B3DR2G uses 16-SOIC for Flyback-specific implementation. UCC28811D and XDPL8105XUMA1 use 8-SOIC for compact Flyback designs. Package changes require PCB layout redesign and cannot be treated as drop-in replacements.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: MSL 1 (Unlimited) parts like NCL30030B3DR2G and UCC28811D can be stored indefinitely without moisture baking. MSL 3 parts (RT7304AGE, MP4653GY-Z, XDPL8105XUMA1) require moisture baking after 168 hours of exposure to ambient humidity. Select MSL 1 parts for applications with extended storage or high-humidity manufacturing environments.

Q: Are all substitute parts suitable for lighting applications?

A: All six parts list lighting as an application. MP4653GY-Z additionally supports backlight applications. XDPL8105XUMA1 does not specify applications in the provided data. Verify specific application compatibility through manufacturer datasheets before final selection.

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

A: RT7304AGE, RT7304GE, MP4653GY-Z, and NCL30030B3DR2G support -40°C to 125°C. UCC28811D is limited to -40°C to 105°C. XDPL8105XUMA1 is the most restricted at -40°C to 85°C. Select parts based on your application's thermal environment; lower temperature ratings may not be suitable for high-temperature industrial lighting systems.

Q: Can I use UCC28811D if my application requires supply voltages above 18V?

A: No. UCC28811D specifies a maximum supply voltage of 18V. Using it in applications requiring higher voltages violates the part's electrical specifications and voids reliability guarantees. Select RT7304AGE, RT7304GE, MP4653GY-Z, or NCL30030B3DR2G for higher voltage requirements.

Q: What topology differences should I consider?

A: RT7304AGE, RT7304GE, and UCC28811D support three topologies: Flyback, Step-Down (Buck), and Step-Up (Boost). MP4653GY-Z uses Half-Bridge topology. NCL30030B3DR2G and XDPL8105XUMA1 use Flyback only. Your circuit design determines which topologies are compatible; topology changes require schematic redesign.