TPS40180RGET Equivalent & Substitute Parts

Part Overview

The TPS40180RGET is a buck regulator positive output step-down DC-DC controller IC in 24-VQFN (4x4) packaging from Texas Instruments. This device functions as a transistor driver for single-output, single-phase buck topology applications with integrated synchronous rectification. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Alternative equivalent and substitute parts are necessary for ongoing production support and new design initiatives.

Substiute Parts

TPS40180RGET

Texas InstrumentsIn Stock: 1444TPS40180RGET Datasheet

Current PartRFQ

TPS40101RGER

Texas InstrumentsIn Stock: 9255TPS40101RGER Datasheet

MFR RecommendedRFQ

TPS40322RHBT

Texas InstrumentsIn Stock: 1435TPS40322RHBT Datasheet

MFR RecommendedRFQ

TPS40180RGER

Texas InstrumentsIn Stock: 2698TPS40180RGER Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS40180RGET is determined by the following critical parameters:

• Package Compatibility: Physical form factor must be 24-VQFN (4x4) with exposed pad to ensure PCB layout compatibility
• Topology & Function: Buck regulator with step-down positive output configuration
• Output Configuration: Single output, single phase
• Supply Voltage Range: Must support the required input voltage window
• Switching Frequency Range: Must operate within or encompass the application frequency requirements
• Synchronous Rectification: Integrated synchronous rectifier capability
• Mounting Type: Surface mount only
• Compliance: ROHS3 compliant, MSL 2 (1 Year)

Two categories of substitutes are identified:

Parametric Equivalent: TPS40180RGER shares identical electrical specifications and package format, differing only in tape & reel packaging designation.

Manufacturer Recommended Substitute: TPS40101RGER provides functional equivalence with enhanced specifications (wider supply voltage range, clock sync capability, active product status) but maintains the same 24-VQFN package footprint.

Extended Substitute: TPS40322RHBT offers dual-output, dual-phase capability in a larger 32-VQFN (5x5) package, suitable only for applications requiring multiple outputs or phases.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same PCB Layout): Select TPS40180RGER for existing designs currently using TPS40180RGET. This parametric equivalent maintains identical electrical specifications and package footprint. Both parts carry "Not For New Designs" status; however, TPS40180RGER offers higher inventory availability (2607 pcs vs. 1346 pcs).

For New Designs and Long-Term Production Support: Select TPS40101RGER as the primary choice. This manufacturer-recommended substitute is classified as "Active" product status, ensuring long-term availability and support. It provides enhanced specifications including extended supply voltage range (4.5V ~ 18V vs. 4.5V ~ 15V), clock synchronization capability, and tracking control features. The identical 24-VQFN (4x4) package ensures PCB compatibility without layout modifications. Operating temperature range is reduced to -40°C ~ 85°C; applications requiring -40°C ~ 105°C operation must evaluate thermal requirements.

For Multi-Output or Multi-Phase Applications: Select TPS40322RHBT only if the application requires dual outputs or dual-phase operation. This part requires PCB redesign due to the larger 32-VQFN (5x5) package. It offers the widest supply voltage range (3V ~ 20V) and highest operating temperature (up to 125°C junction temperature). This substitution is not suitable for single-output, single-phase designs.

Frequently Asked Questions (FAQ)

Q: Can TPS40180RGER be used as a direct drop-in replacement for TPS40180RGET?

A: Yes. TPS40180RGER is a parametric equivalent with identical electrical specifications, package format (24-VQFN 4x4), and control features. The only difference is packaging designation (tape & reel). No circuit modifications are required.

Q: Why is TPS40101RGER recommended for new designs instead of TPS40180RGET?

A: TPS40101RGER carries "Active" product status, ensuring long-term manufacturing support and availability. TPS40180RGET is classified "Not For New Designs," indicating end-of-life status. Both use the same 24-VQFN (4x4) package, enabling direct PCB compatibility. TPS40101RGER also provides enhanced features including clock synchronization and tracking control.

Q: What is the key difference between TPS40101RGER and TPS40322RHBT?

A: TPS40101RGER is a single-output, single-phase controller in 24-VQFN (4x4) package. TPS40322RHBT is a dual-output, dual-phase controller in 32-VQFN (5x5) package. TPS40322RHBT requires PCB redesign and is suitable only for applications requiring multiple outputs or phases. For single-output applications, TPS40101RGER is the appropriate choice.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts (TPS40180RGET, TPS40180RGER, TPS40101RGER, and TPS40322RHBT) are ROHS3 compliant with MSL 2 (1 Year) moisture sensitivity level.

Q: What is the operating temperature difference between TPS40101RGER and TPS40180RGET?

A: TPS40180RGET operates from -40°C to 105°C (ambient). TPS40101RGER operates from -40°C to 85°C (ambient). Applications requiring operation above 85°C ambient temperature must retain TPS40180RGET or evaluate TPS40322RHBT (up to 125°C junction temperature).

Q: Can TPS40322RHBT be used in a single-output application?

A: TPS40322RHBT is designed for dual-output, dual-phase operation. While it may function in a single-output configuration, this represents suboptimal utilization of the device's capabilities and requires PCB redesign due to the larger 32-VQFN (5x5) package. TPS40101RGER is the appropriate choice for single-output applications.

Q: What inventory levels are available for each part?

A: TPS40180RGET: 1346 pcs; TPS40180RGER: 2607 pcs; TPS40101RGER: 9200 pcs; TPS40322RHBT: 1350 pcs. TPS40101RGER offers the highest inventory availability.