TPS78225DRVR Equivalent & Substitute Parts

Part Overview

The TPS78225DRVR is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive output of 2.5V at 150mA with a maximum dropout voltage of 0.25V. The device is housed in a 6-WSON (2x2) package and is currently in active production status. This part is widely used in applications requiring low-dropout regulation with minimal quiescent current consumption. Equivalent and substitute parts are identified for procurement flexibility, inventory management, and application-specific requirements such as automotive qualification or alternative packaging formats.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	150mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.25V @ 150mA
Quiescent Current	1.3 µA
Package Type	6-WSON (2x2)
Operating Temperature Range	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TPS78225DRVR is determined by the following critical parameters: fixed output voltage of 2.5V, output current capability of 150mA, maximum input voltage of 5.5V, and package compatibility. Parts are grouped into two categories:

Parametric Equivalents (Identical Electrical Specifications): TPS78225DRVT and TPS78225QDRVRQ1 maintain all electrical characteristics of the main part, including dropout voltage, quiescent current, and PSRR performance. These parts differ only in packaging format (Tape & Reel vs. Cut Tape) and qualification level (standard vs. automotive AEC-Q100).

Manufacturer Recommended Substitute (Functional Equivalent with Variations): AP7351D-25W5-7 from Diodes Incorporated provides the same output voltage and current rating but operates within a narrower temperature range (-40°C ~ 85°C) and exhibits higher dropout voltage (0.48V @ 150mA). This part is packaged in SOT-25 format and includes automotive qualification.

Parameter Comparison

Parameter	TPS78225DRVR	TPS78225DRVT	TPS78225QDRVRQ1	AP7351D-25W5-7
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Diodes Incorporated
Output Voltage	2.5V	2.5V	2.5V	2.5V
Output Current	150mA	150mA	150mA	150mA
Input Voltage (Max)	5.5V	5.5V	5.5V	5.5V
Dropout Voltage (Max)	0.25V @ 150mA	0.25V @ 150mA	0.25V @ 150mA	0.48V @ 150mA
Quiescent Current	1.3 µA	1.3 µA	1.3 µA	1 µA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Package / Case	6-WSON (2x2)	6-WSON (2x2)	6-WSON (2x2)	SOT-25
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Automotive Grade	Standard	Standard	AEC-Q100	AEC-Q100
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select TPS78225DRVT when Tape & Reel packaging is required for automated assembly processes. This part maintains all electrical performance characteristics and operating temperature range of the original TPS78225DRVR.

For Automotive Applications: TPS78225QDRVRQ1 is the appropriate selection when AEC-Q100 automotive qualification is mandated. This part provides identical electrical performance to the main part while meeting automotive reliability standards.

For Alternative Packaging with Automotive Qualification: AP7351D-25W5-7 is suitable when SOT-25 package format is required and automotive qualification is necessary. Design considerations must account for the higher dropout voltage (0.48V vs. 0.25V) and reduced maximum operating temperature (85°C vs. 125°C). This part is recommended only when thermal and voltage margin constraints permit the performance variation.

Frequently Asked Questions (FAQ)

Q: Can TPS78225DRVT be used as a direct replacement for TPS78225DRVR? A: Yes. TPS78225DRVT is a parametric equivalent with identical electrical specifications. The only difference is packaging format: TPS78225DRVR uses Cut Tape & Digi-Reel, while TPS78225DRVT uses Tape & Reel. Both are suitable for the same application.

Q: What is the difference between TPS78225QDRVRQ1 and TPS78225DRVR? A: TPS78225QDRVRQ1 is AEC-Q100 automotive qualified and uses Tape & Reel packaging. All electrical parameters are identical. Select this part when automotive qualification is a design requirement.

Q: Can AP7351D-25W5-7 replace TPS78225DRVR in all applications? A: No. While AP7351D-25W5-7 provides the same output voltage and current rating, it has higher dropout voltage (0.48V vs. 0.25V) and a lower maximum operating temperature (85°C vs. 125°C). Substitution is valid only when these performance differences do not violate design specifications.

Q: Why does AP7351D-25W5-7 use a different package (SOT-25 vs. 6-WSON)? A: Package selection reflects different design approaches by manufacturers. SOT-25 is a larger package format. PCB layout and thermal management must be re-evaluated if switching from 6-WSON to SOT-25 packaging.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All parts listed—TPS78225DRVR, TPS78225DRVT, TPS78225QDRVRQ1, and AP7351D-25W5-7—are ROHS3 compliant.

Q: Which part should be selected for high-temperature applications above 85°C? A: TPS78225DRVR, TPS78225DRVT, or TPS78225QDRVRQ1 are required for operation above 85°C, as these support the full -40°C ~ 125°C temperature range. AP7351D-25W5-7 is limited to -40°C ~ 85°C.

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