TPS73201DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS73201DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This Surface Mount device delivers 250mA output current in a compact SOT-23-5 package and is suitable for low-dropout regulation in battery-powered and portable applications. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and design requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
Output Configuration	Positive
Output Type	Adjustable
Voltage - Input (Max)	5.5V
Voltage - Output (Min/Fixed)	1.2V
Voltage - Output (Max)	5.5V
Current - Output	250mA
Voltage Dropout (Max)	0.15V @ 250mA
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the TPS73201DBVRG4 is determined by the following critical parameters:

Parametric Equivalents (TPS73201DBVR, TPS73201DBVT): These parts share identical electrical specifications with the main part, including input/output voltage ranges, dropout voltage, output current, quiescent current, PSRR characteristics, and protection features. The differences are limited to packaging format (Cut Tape & Digi-Reel versus Digi-Reel) and product status (Active versus Discontinued). Both are direct functional replacements within the same TPS732xx series.

Manufacturer Recommended Equivalent (LDK130M-R): This STMicroelectronics part is qualified as a functional alternative based on matching the core substitution criteria: identical package type (SOT-23-5), identical mounting type (Surface Mount), overlapping voltage specifications, and compatible operating temperature range. The LDK130M-R provides higher output current (300mA versus 250mA) and lower quiescent current (60µA versus 550µA), making it suitable for applications where the TPS73201DBVRG4 specifications are met or exceeded. This part carries AEC-Q100 automotive qualification.

Parameter Comparison

Parameter	TPS73201DBVRG4	TPS73201DBVR	TPS73201DBVT	LDK130M-R
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Output Configuration	Positive	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	5.5V	5.5V	5.5V	5.5V
Voltage - Output (Min/Fixed)	1.2V	1.2V	1.2V	0.8V
Voltage - Output (Max)	5.5V	5.5V	5.5V	5.1V
Current - Output	250mA	250mA	250mA	300mA
Voltage Dropout (Max)	0.15V @ 250mA	0.15V @ 250mA	0.15V @ 250mA	0.4V @ 300mA
Current - Quiescent (Iq)	550 µA	550 µA	550 µA	60 µA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C (TJ)
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select TPS73201DBVR or TPS73201DBVT. Both parts are active products from Texas Instruments with identical electrical and mechanical specifications to the discontinued TPS73201DBVRG4. These provide the most straightforward substitution path with no design modifications required. TPS73201DBVT offers higher inventory availability (485,781 units) compared to TPS73201DBVR (4,430 units).

For Enhanced Performance Alternative: Select LDK130M-R when higher output current capacity or lower quiescent current is beneficial to the application. This STMicroelectronics part is AEC-Q100 qualified and suitable for automotive-grade applications. The LDK130M-R operates with lower quiescent current (60µA versus 550µA), reducing standby power consumption. The higher dropout voltage (0.4V @ 300mA versus 0.15V @ 250mA) must be evaluated against application headroom requirements. All parts maintain ROHS3 compliance and identical operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can TPS73201DBVR and TPS73201DBVT be used interchangeably with TPS73201DBVRG4?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output current, voltage ranges, dropout characteristics, and protection features. The only differences are packaging format and product status. No circuit modifications are required.

Q: What are the key differences between the Texas Instruments TPS732xx series substitutes and the LDK130M-R?

A: The LDK130M-R provides 300mA output current versus 250mA, and significantly lower quiescent current (60µA versus 550µA). However, it has higher dropout voltage (0.4V @ 300mA versus 0.15V @ 250mA) and a lower minimum output voltage (0.8V versus 1.2V). Applications requiring the original 250mA specification with 0.15V dropout should use the TPS732xx series. Applications with higher current requirements or lower standby power needs may benefit from the LDK130M-R.

Q: Are all substitute parts in the same SOT-23-5 package?

A: Yes. All listed substitutes use the SC-74A, SOT-753 package designation with SOT-23-5 supplier device package. PCB layout and footprints are compatible across all parts.

Q: Which substitute has the best inventory availability?

A: TPS73201DBVT has the highest inventory at 485,781 units in stock. TPS73201DBVR has 4,430 units, and LDK130M-R has 8,839 units available.

Q: Is the LDK130M-R suitable for automotive applications?

A: Yes. The LDK130M-R carries AEC-Q100 qualification, making it suitable for automotive-grade designs. The TPS732xx series parts do not list automotive qualification.

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