TPS5420DRG4 Equivalent & Substitute Parts

Part Overview

The TPS5420DRG4 is a buck switching regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 2A output current with an adjustable output voltage range from 1.22V to 31V, suitable for step-down conversion from input voltages between 5.5V and 36V. The device is packaged in an 8-SOIC surface mount package with a switching frequency of 500kHz.

The TPS5420DRG4 is discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this topology and performance specification.

Substiute Parts

TPS5420DRG4

Texas InstrumentsIn Stock: 2045TPS5420DRG4 Datasheet

Current PartRFQ

TPS5420DR

Texas InstrumentsIn Stock: 25195TPS5420DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS5420DRG4 is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator
• Output Configuration: Positive adjustable voltage
• Electrical Specifications: Input voltage range 5.5V–36V, output voltage range 1.22V–31V, 2A output current
• Switching Frequency: 500kHz
• Package: 8-SOIC surface mount with identical pinout and mechanical dimensions
• Operating Temperature Range: -40°C to 125°C
• Compliance: ROHS3 compliant, MSL 2 rating

The TPS5420DR from Texas Instruments meets all these criteria and is the manufacturer-recommended substitute. Both parts share the same base product number (TPS5420) and are functionally identical, with the primary difference being product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The TPS5420DR is the direct substitute for the TPS5420DRG4. Both devices are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The TPS5420DR maintains active product status with confirmed inventory availability (25,100 pcs), whereas the TPS5420DRG4 is discontinued.

Selection of the TPS5420DR ensures:

• Full electrical compatibility with existing circuit designs
• Identical pinout and package footprint for direct PCB replacement
• Maintained compliance with ROHS3 and REACH requirements
• Consistent operating temperature performance across the -40°C to 125°C range
• Equivalent MSL 2 moisture sensitivity rating

The substitute part is suitable for new designs and production continuity without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the TPS5420DR be used as a direct replacement for the TPS5420DRG4 on existing PCBs?

A: Yes. Both parts are identical in electrical performance, pinout, and package dimensions (8-SOIC). No PCB layout modifications are required.

Q: Are there differences in the output voltage adjustment range between these parts?

A: No. Both the TPS5420DRG4 and TPS5420DR provide the same adjustable output voltage range from 1.22V to 31V with identical input voltage specifications (5.5V to 36V).

Q: What is the difference between TPS5420DRG4 and TPS5420DR packaging?

A: The TPS5420DRG4 uses Digi-Reel packaging, while the TPS5420DR is available in Cut Tape (CT) and Digi-Reel formats. Both use the same 8-SOIC package case.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TPS5420DRG4 and TPS5420DR are ROHS3 compliant, REACH unaffected, and carry MSL 2 (1 Year) moisture sensitivity ratings.

Q: Why is the TPS5420DRG4 discontinued if the TPS5420DR is available?

A: Product discontinuation at distributors does not indicate a design change. The TPS5420DR remains in active production from Texas Instruments and is the recommended source for continued supply.

Q: Are the switching frequency and operating temperature specifications identical?

A: Yes. Both parts operate at 500kHz switching frequency and support the full -40°C to 125°C junction temperature range.