TPS54331DRG4 Equivalent & Substitute Parts

Part Overview

The TPS54331DRG4 is a buck switching regulator IC from Texas Instruments, designed for positive adjustable output voltage regulation with 3A output current capability. This device operates across a wide input voltage range of 4.6V to 28V and supports adjustable output voltages from 0.8V to 25V, making it suitable for diverse power management applications in industrial and consumer electronics.

The TPS54331DRG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this topology and performance specification.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Down (Buck)
Output Configuration	Positive Adjustable
Number of Outputs	1
Voltage - Input (Min/Max)	4.6V / 28V
Voltage - Output (Min/Max)	0.8V / 25V
Current - Output	3A
Frequency - Switching	570kHz
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Series	Eco-Mode™
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TPS54331DRG4 are identified based on strict electrical and mechanical parameter matching. The primary substitution criterion is the TPS54331 base product number, which ensures identical functional specifications across all variants.

The key parameters that determine substitutability are:

Input voltage range: 4.6V to 28V
Output voltage adjustability: 0.8V to 25V
Output current capability: 3A
Switching frequency: 570kHz
Package type: 8-SOIC (0.154", 3.90mm Width)
Operating temperature range: -40°C to 150°C
Topology: Buck (Step-Down)
Output configuration: Positive Adjustable
Series designation: Eco-Mode™

Parts sharing these specifications are electrically and mechanically interchangeable within the same application context.

Parameter Comparison

Parameter	TPS54331DRG4	TPS54331DR
Manufacturer	Texas Instruments	Texas Instruments
Base Product Number	TPS54331	TPS54331
Function	Step-Down	Step-Down
Output Configuration	Positive Adjustable	Positive Adjustable
Number of Outputs	1	1
Voltage - Input (Min)	4.6V	4.6V
Voltage - Input (Max)	28V	28V
Voltage - Output (Min/Fixed)	0.8V	0.8V
Voltage - Output (Max)	25V	25V
Current - Output	3A	3A
Frequency - Switching	570kHz	570kHz
Synchronous Rectifier	No	No
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC	8-SOIC
Series	Eco-Mode™	Eco-Mode™
Product Status	Discontinued at DiGi Electronics	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

The TPS54331DR is the direct substitute for the TPS54331DRG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, thermal characteristics, and package geometry. The primary distinction is product status: the TPS54331DRG4 is discontinued, while the TPS54331DR maintains active status with significantly higher inventory availability (105,400 pcs vs. 998 pcs).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints for either variant.

Selection of the TPS54331DR is appropriate for new designs and production continuity where the TPS54331DRG4 is no longer available. The packaging format (Cut Tape and Digi-Reel) of the TPS54331DR supports both prototype and high-volume production workflows.

Frequently Asked Questions (FAQ)

Q: Are the TPS54331DRG4 and TPS54331DR electrically identical?

A: Yes. Both parts share the same base product number (TPS54331) and possess identical electrical specifications, including input voltage range (4.6V–28V), adjustable output voltage (0.8V–25V), output current (3A), and switching frequency (570kHz).

Q: Can I use the TPS54331DR as a direct replacement for the TPS54331DRG4 in existing designs?

A: Yes. The TPS54331DR is a direct substitute. Both parts use the 8-SOIC package with identical pinout and thermal characteristics, requiring no circuit modifications or PCB layout changes.

Q: What is the difference between the TPS54331DRG4 and TPS54331DR packaging designations?

A: The TPS54331DRG4 uses standard packaging, while the TPS54331DR is supplied in Cut Tape (CT) and Digi-Reel formats. Both contain the same die and deliver identical performance. The packaging format difference reflects supplier distribution methods rather than functional variation.

Q: Why is the TPS54331DRG4 discontinued?

A: The TPS54331DRG4 is discontinued at DiGi Electronics. The TPS54331DR remains in active production and is the recommended part for ongoing applications.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the TPS54331DRG4 and TPS54331DR are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, meeting current regulatory standards for electronic component manufacturing and distribution.

Q: What is the operating temperature range for these parts?

A: Both parts operate across -40°C to 150°C junction temperature (TJ), supporting industrial and extended-temperature applications.

Q: Are there any moisture sensitivity concerns with these parts?

A: No. Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message