TPS40101RGET Equivalent & Substitute Parts

Part Overview

The TPS40101RGET is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments in a 24-VQFN (4x4) package with exposed pad. This active product functions as a transistor driver for step-down topology applications with single output and single phase configuration. The device operates across a supply voltage range of 4.5V to 18V with switching frequency capability from 100kHz to 1MHz, incorporating synchronous rectification and clock synchronization features. Finding equivalent substitute parts becomes necessary when addressing inventory constraints, lead time requirements, or design flexibility needs while maintaining identical electrical and mechanical specifications.

Substiute Parts

TPS40101RGET

Texas InstrumentsIn Stock: 954TPS40101RGET Datasheet

Current PartRFQ

TPS40100RGER

Texas InstrumentsIn Stock: 17300TPS40100RGER Datasheet

Parametric EquivalentRFQ

TPS40100RGET

Texas InstrumentsIn Stock: 3207TPS40100RGET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS40101RGET are identified based on strict parametric equivalence within the allowed electrical and mechanical specifications for buck regulator controller ICs. The substitution logic is based on the following critical parameters that must remain identical:

• Manufacturer: Texas Instruments
• Category: Power Management (PMIC)
• Function: Step-Down Buck Regulator Controller
• Output Type: Transistor Driver
• Topology: Buck with single output and single phase
• Voltage Supply Range: 4.5V ~ 18V
• Synchronous Rectifier: Yes
• Clock Sync: Yes
• Control Features: Current Limit, Frequency Control, Power Good, Soft Start, Tracking
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 24-VFQFN Exposed Pad
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 2 (1 Year)
• Product Status: Active

The identified substitutes TPS40100RGER and TPS40100RGET meet all these criteria. The primary difference lies in the switching frequency range specification, where substitute parts operate within 100kHz ~ 600kHz compared to the main part's 100kHz ~ 1MHz capability. This represents a functional subset of the original specification.

Parameter Comparison

Engineering Selection Recommendations

All three parts—TPS40101RGET, TPS40100RGER, and TPS40100RGET—maintain active product status with full ROHS3 compliance and REACH unaffected certification. Selection between these parts should be based on application-specific switching frequency requirements and inventory availability.

The TPS40101RGET supports switching frequencies up to 1MHz, providing maximum operational flexibility for applications requiring higher frequency operation. The TPS40100RGER and TPS40100RGET are limited to 600kHz maximum switching frequency, representing a functional subset suitable for applications operating within this frequency range.

From a compliance and regulatory perspective, all three parts are equivalent. The choice between TPS40100RGER and TPS40100RGET depends on packaging format requirements and inventory status, as both share identical electrical specifications and package configuration.

Frequently Asked Questions (FAQ)

Q: Can TPS40100RGER or TPS40100RGET be used as direct replacements for TPS40101RGET?

A: These parts are parametric equivalents with one critical difference: maximum switching frequency. TPS40100RGER and TPS40100RGET operate up to 600kHz, while TPS40101RGET operates up to 1MHz. Direct substitution is valid only if your application operates at or below 600kHz switching frequency.

Q: What is the difference between TPS40100RGER and TPS40100RGET?

A: Both parts share identical electrical specifications and package configuration (24-VQFN 4x4 with exposed pad). The suffix difference (RGER vs RGET) indicates different packaging formats within tape and reel delivery. Selection depends on your procurement and assembly process requirements.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 24-VFQFN exposed pad package with identical pinout and footprint, enabling direct PCB-level substitution without layout modifications.

Q: Do these parts require different PCB layout considerations?

A: No. The identical 24-VQFN (4x4) package specification ensures that PCB layouts designed for one part are directly compatible with the others.

Q: What inventory considerations apply to these substitutes?

A: TPS40100RGER maintains the highest inventory availability at 17,200 pieces, followed by TPS40100RGET at 3,100 pieces, and TPS40101RGET at 921 pieces. Inventory status may influence selection when lead time is a critical factor.

Q: Are there any thermal or reliability differences between these parts?

A: All three parts share identical operating temperature range (-40°C to 85°C) and moisture sensitivity level (MSL 2, 1 Year), indicating equivalent thermal and reliability characteristics.