TPS51117RGYR Equivalent & Substitute Parts

Part Overview

The TPS51117RGYR is an active buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments. This power management IC operates as a transistor driver with integrated control features including enable, on-time control, and power good monitoring. The device is housed in a 14-VQFN (4.6x4.6) package with exposed pad and is designed for surface mount applications. With 17,100 pieces in current inventory and active product status, the TPS51117RGYR remains a standard component for step-down voltage regulation applications. Equivalent substitute parts are identified based on matching electrical specifications, package configuration, and functional characteristics.

Substiute Parts

TPS51117RGYR

Texas InstrumentsIn Stock: 17122TPS51117RGYR Datasheet

Current PartRFQ

TPS51117RGYT

Texas InstrumentsIn Stock: 3345TPS51117RGYT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS51117RGYR are identified based on strict equivalence across the following critical parameters:

Functional equivalence is established through matching output type (transistor driver), function (step-down), output configuration (positive), topology (buck), and control features (enable, on-time control, power good). Electrical equivalence is confirmed by identical supply voltage range (4.5V ~ 5.5V), synchronous rectifier capability, single output with single phase configuration, and identical operating temperature range (-40°C ~ 85°C). Package equivalence requires matching 14-VFQFN exposed pad configuration with 4.6x4.6mm dimensions and surface mount mounting type. Compliance equivalence is maintained through ROHS3 compliance, identical MSL rating (2, 1 Year), and matching REACH and ECCN classifications.

The TPS51117RGYT qualifies as a parametric equivalent based on these criteria. The primary distinction between the main part and substitute is packaging format: the TPS51117RGYR is supplied in Cut Tape (CT) & Digi-Reel® format, while the TPS51117RGYT is supplied in Tape & Reel (TR) format. Both parts share the identical base product number (TPS51117) and all electrical and functional specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS51117RGYR and TPS51117RGYT are active products from Texas Instruments with identical electrical and functional specifications. Selection between these parts is determined by packaging and supply chain requirements rather than technical performance.

The TPS51117RGYR in Cut Tape (CT) & Digi-Reel® format is suitable for applications requiring smaller order quantities or mixed component sourcing. The TPS51117RGYT in Tape & Reel (TR) format is appropriate for high-volume production environments and automated assembly processes.

Both parts maintain ROHS3 compliance, identical MSL rating (2, 1 Year), and matching regulatory classifications (REACH Unaffected, ECCN EAR99). The choice between these equivalent parts does not impact circuit design, PCB layout, or thermal management considerations, as all electrical and functional parameters are identical.

Frequently Asked Questions (FAQ)

Q: Are the TPS51117RGYR and TPS51117RGYT electrically identical?

A: Yes. Both parts share identical electrical specifications including supply voltage range (4.5V ~ 5.5V), control features (enable, on-time control, power good), operating temperature range (-40°C ~ 85°C), and synchronous rectifier capability. All functional parameters for step-down buck regulation are equivalent.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape (CT) & Digi-Reel® format provides flexibility for smaller quantities and mixed sourcing scenarios. Tape & Reel (TR) format is optimized for high-volume automated assembly with continuous component feeding. The physical component and electrical performance remain identical.

Q: Can I substitute the TPS51117RGYT for the TPS51117RGYR in my design?

A: Yes. The TPS51117RGYT is a direct parametric equivalent. No circuit design changes, PCB layout modifications, or firmware adjustments are required. The substitution is valid for all applications where the TPS51117RGYR is specified.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the TPS51117RGYR and TPS51117RGYT are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain MSL rating 2 (1 Year) for moisture sensitivity.

Q: Which part should I select for production?

A: Selection depends on your supply chain and assembly process. For high-volume automated assembly, the TPS51117RGYT (Tape & Reel) is standard. For lower volumes or mixed component orders, the TPS51117RGYR (Cut Tape & Digi-Reel®) may be more practical. Both are active products with adequate inventory.