TPS62203DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS62203DBVRG4 is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion. It delivers a fixed 3.3V output at 300mA from an input range of 2.5V to 6V, operating at 1MHz switching frequency with integrated synchronous rectification. The device is packaged in SC-74A (SOT-753) form factor and is RoHS3 compliant with MSL Level 1 moisture sensitivity.

This part is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from active product lines that maintain compatible electrical and mechanical specifications, enabling direct replacement or functional substitution in existing designs.

Substiute Parts

TPS62203DBVRG4

Texas InstrumentsIn Stock: 2503TPS62203DBVRG4 Datasheet

Current PartRFQ

TPS62203DBVR

Texas InstrumentsIn Stock: 25438TPS62203DBVR Datasheet

MFR RecommendedRFQ

LM3670MF-3.3/NOPB

Texas InstrumentsIn Stock: 9394LM3670MF-3.3/NOPB Datasheet

MFR RecommendedRFQ

ADP2108AUJZ-3.3-R7

Analog Devices Inc.In Stock: 12307ADP2108AUJZ-3.3-R7 Datasheet

MFR RecommendedRFQ

SC4626ZSKTRT

SemtechIn Stock: 9235SC4626ZSKTRT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS62203DBVRG4 is determined by the following criteria:

Primary Compatibility Requirements:

• Output voltage: 3.3V fixed
• Topology: Buck (step-down)
• Package: SC-74A, SOT-753 or SOT-23-5 equivalent
• Synchronous rectification capability
• RoHS3 compliance

Secondary Compatibility Factors:

• Input voltage range must encompass or exceed 2.5V to 6V
• Output current capability must meet or exceed 300mA
• Operating temperature range must cover -40°C to 85°C minimum
• Switching frequency and efficiency characteristics

Substitute parts are grouped by their ability to meet these core parameters while maintaining form factor compatibility and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended for Immediate Replacement):

TPS62203DBVR is the primary equivalent for TPS62203DBVRG4. Both devices share identical electrical specifications, package form factor, and operating parameters. TPS62203DBVR is currently in active production status with higher inventory availability (25,400 units), making it the preferred choice for design continuity and supply chain stability.

Functional Substitutes (Higher Current Capability):

LM3670MF-3.3/NOPB and ADP2108AUJZ-3.3-R7 provide increased output current capacity (350mA and 600mA respectively) while maintaining 3.3V fixed output and compatible packaging. These parts are suitable for applications requiring additional current headroom. Both are in active production status with RoHS3 compliance.

ADP2108AUJZ-3.3-R7 offers extended operating temperature range (-40°C to 125°C) and higher switching frequency (3MHz), which may reduce external component size in space-constrained applications.

Legacy Substitute (Not Recommended for New Designs):

SC4626ZSKTRT is marked "Not For New Designs" and should be avoided for new product development. While it meets core electrical requirements with 1A output current capability, its discontinued design status and limited future support make it unsuitable for long-term production use.

Frequently Asked Questions (FAQ)

Q: Can TPS62203DBVR directly replace TPS62203DBVRG4 without PCB modifications?

A: Yes. TPS62203DBVR is electrically and mechanically identical to TPS62203DBVRG4. Both use SC-74A (SOT-753) packaging with identical pin configuration, electrical ratings, and thermal characteristics. No PCB layout changes are required.

Q: What is the difference between TPS62203DBVRG4 and TPS62203DBVR?

A: The primary difference is packaging format. TPS62203DBVRG4 is supplied in Digi-Reel format, while TPS62203DBVR is available in Cut Tape (CT) and Digi-Reel packaging options. Electrical specifications and performance are identical.

Q: Can I use LM3670MF-3.3/NOPB as a substitute if my application only requires 300mA?

A: Yes. LM3670MF-3.3/NOPB is rated for 350mA output current, which exceeds the 300mA requirement of TPS62203DBVRG4. The device will operate within specification at lower current levels. Package and electrical compatibility are maintained.

Q: What are the package compatibility considerations for ADP2108AUJZ-3.3-R7?

A: ADP2108AUJZ-3.3-R7 uses SOT-23-5 Thin (TSOT-23-5) packaging, which is mechanically compatible with standard SOT-23-5 footprints. Pin configuration and spacing are identical to SC-74A (SOT-753). PCB layout compatibility is maintained without modifications.

Q: Why is SC4626ZSKTRT marked "Not For New Designs"?

A: SC4626ZSKTRT is a legacy product from Semtech with limited future production commitment. While it meets current electrical requirements, manufacturer support and long-term availability are not guaranteed. For new product development, TPS62203DBVR or LM3670MF-3.3/NOPB are recommended.

Q: Are all substitute parts RoHS3 compliant?

A: TPS62203DBVR, LM3670MF-3.3/NOPB, and ADP2108AUJZ-3.3-R7 are RoHS3 compliant. SC4626ZSKTRT is RoHS compliant but not specifically RoHS3 certified. For applications requiring RoHS3 compliance, use TPS62203DBVR, LM3670MF-3.3/NOPB, or ADP2108AUJZ-3.3-R7.

Q: What is the input voltage range compatibility across all substitutes?

A: TPS62203DBVRG4 and TPS62203DBVR operate from 2.5V to 6V. LM3670MF-3.3/NOPB, ADP2108AUJZ-3.3-R7, and SC4626ZSKTRT have maximum input voltage limited to 5.5V. For applications requiring 6V input operation, use TPS62203DBVR as the only compatible option.