RT7304GE LED Driver IC Equivalent & Substitute Parts

Part Overview

The RT7304GE is an AC DC offline switcher LED driver IC manufactured by Richtek USA Inc., designed for lighting applications. This single-output power management IC operates across a 12V to 25V supply range in a compact SOT-23-6 surface mount package. The part is currently active in production with 23,400 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative topologies, package formats, supply voltage ranges, or dimming control methods while maintaining functional compatibility for LED driver applications.

Key Parameters

Parameter	RT7304GE
Manufacturer	Richtek USA Inc.
Category	Power Management (PMIC)
Type	AC DC Offline Switcher
Topology	Flyback, Step-Down (Buck), Step-Up (Boost)
Number of Outputs	1
Voltage - Supply (Min)	12V
Voltage - Supply (Max)	25V
Internal Switch(s)	No
Package / Case	SOT-23-6
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Applications	Lighting
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the RT7304GE are grouped based on the following substitution criteria:

Primary Compatibility Factors:

AC DC offline switcher topology for LED driver applications
Single output configuration
Surface mount packaging
Operating temperature range of -40°C to 125°C (or -40°C to 85°C minimum)
ROHS3 compliance and active product status
Supply voltage overlap or extended range capability

Substitution Logic: Parts are considered equivalent when they share the core AC DC offline switcher function for lighting applications, maintain single-output architecture, and operate within compatible voltage ranges. Package format differences (SOT-23-6 vs. 8-SOIC vs. 16-TSSOP vs. TSOT-23-5) are noted as they affect PCB layout and require design modification. Topology variations (Flyback, Buck, Boost, or combinations) and dimming control methods (PWM, Analog, Triac) are documented as functional differentiators that may require application-specific validation.

Parameter Comparison

Parameter	RT7304GE	HV9931LG-G	LM3450AMT/NOPB	MP4050AGJ-Z	MXHV9910B	NCL30000DR2G	NCL30030B2DR2G	TPS92075DR/NOPB
Manufacturer	Richtek USA Inc.	Microchip Technology	Texas Instruments	Monolithic Power Systems Inc.	IXYS Integrated Circuits Division	onsemi	onsemi	Texas Instruments
Type	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher	AC DC Offline Switcher
Topology	Flyback, Buck, Boost	Buck, Boost	Flyback, Boost	Buck	Buck	Flyback, Buck	Flyback	Buck, Boost
Number of Outputs	1	1	1	1	1	1	1	1
Voltage - Supply (Min)	12V	8V	8.5V	4.1V	8V	8.8V	9V	11V
Voltage - Supply (Max)	25V	450V	20V	5V	450V	20V	30V	18V
Internal Switch(s)	No	No	Yes	Yes	No	No	No	No
Package / Case	SOT-23-6	8-SOIC	16-TSSOP	SOT-23-5 Thin (TSOT-23-5)	8-SOIC	8-SOIC	16-SOIC	8-SOIC
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Dimming	-	PWM	Analog	-	PWM	Triac	-	Triac
Frequency	-	100kHz	-	22kHz	64kHz	-	-	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the RT7304GE.

HV9931LG-G (Microchip Technology): Extends supply voltage range to 450V maximum, supporting broader input conditions. Operates at 100kHz with PWM dimming. Package change to 8-SOIC requires PCB layout modification. Operating temperature maximum of 85°C (TA) is lower than RT7304GE.

LM3450AMT/NOPB (Texas Instruments): Includes internal switch and supports Flyback and Boost topologies with Analog dimming. Maintains 125°C junction temperature rating. Package change to 16-TSSOP increases pin count and board space. Supply voltage maximum of 20V aligns closely with RT7304GE.

MP4050AGJ-Z (Monolithic Power Systems Inc.): Automotive-grade component with restricted supply voltage range (4.1V to 5V), suitable only for low-voltage applications. Buck topology only. TSOT-23-5 package is smaller than RT7304GE SOT-23-6. Maintains 125°C junction temperature.

MXHV9910B (IXYS Integrated Circuits Division): Supports 450V maximum supply voltage with 64kHz PWM dimming. Buck topology only. 8-SOIC package requires layout redesign. Operating temperature maximum of 85°C (TA) is lower than RT7304GE.

NCL30000DR2G (onsemi): Supports Flyback and Buck topologies with Triac dimming for phase-cut applications. Supply voltage range of 8.8V to 20V overlaps RT7304GE. 8-SOIC package requires layout modification. Maintains 125°C junction temperature.

NCL30030B2DR2G (onsemi): Flyback topology only with extended supply voltage range to 30V. 16-SOIC package with 15 leads increases complexity. Maintains 125°C junction temperature. Suitable for higher input voltage applications.

TPS92075DR/NOPB (Texas Instruments): Supports Buck and Boost topologies with Triac dimming. Supply voltage range of 11V to 18V is narrower than RT7304GE but overlaps the core operating window. 8-SOIC package requires layout modification. Maintains 125°C junction temperature.

Frequently Asked Questions (FAQ)

Q: Can I directly replace RT7304GE with any of these substitute parts without PCB modifications?

A: No. While HV9931LG-G, MXHV9910B, NCL30000DR2G, and TPS92075DR/NOPB use 8-SOIC packaging (different from RT7304GE SOT-23-6), LM3450AMT/NOPB uses 16-TSSOP, MP4050AGJ-Z uses TSOT-23-5, and NCL30030B2DR2G uses 16-SOIC. All package changes require PCB layout redesign. Pin configurations and signal assignments differ across manufacturers.

Q: Which substitute part has the widest supply voltage range?

A: HV9931LG-G and MXHV9910B both support 8V to 450V supply range, significantly exceeding RT7304GE's 12V to 25V range. These parts are suitable for applications requiring extended input voltage tolerance.

Q: What is the difference between PWM, Analog, and Triac dimming?

A: PWM (Pulse Width Modulation) dimming controls brightness by varying the duty cycle of the output signal. Analog dimming adjusts brightness through analog voltage control. Triac dimming enables phase-cut dimming compatibility with standard wall dimmers. RT7304GE does not specify a dimming method, while substitutes offer these distinct control approaches.

Q: Are all substitute parts rated for the same operating temperature as RT7304GE?

A: No. RT7304GE, LM3450AMT/NOPB, MP4050AGJ-Z, NCL30000DR2G, NCL30030B2DR2G, and TPS92075DR/NOPB are rated to -40°C to 125°C (junction temperature). HV9931LG-G and MXHV9910B are rated to -40°C to 85°C (ambient temperature), which is lower. Verify thermal requirements for your application.

Q: Which substitute parts have internal switches?

A: LM3450AMT/NOPB and MP4050AGJ-Z include internal switches. All other substitutes (HV9931LG-G, MXHV9910B, NCL30000DR2G, NCL30030B2DR2G, TPS92075DR/NOPB) do not include internal switches, matching RT7304GE.

Q: Can I use MP4050AGJ-Z as a direct substitute for RT7304GE?

A: No. MP4050AGJ-Z operates at 4.1V to 5V supply range, which does not overlap with RT7304GE's 12V to 25V range. This part is suitable only for low-voltage applications and is not functionally compatible with RT7304GE designs.

Q: What is the inventory status of these substitute parts?

A: HV9931LG-G: 8,532 units; LM3450AMT/NOPB: 1,166 units; MP4050AGJ-Z: 720 units; MXHV9910B: 1,075 units; NCL30000DR2G: 31,587 units; NCL30030B2DR2G: 5,046 units; TPS92075DR/NOPB: 2,293 units. NCL30000DR2G offers the highest stock availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message