TPS73132DBVR Equivalent & Substitute Parts

Part Overview

The TPS73132DBVR is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3.2V output at 150mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Finding equivalent and substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications requiring 3.2V regulation in compact form factors.

Key Parameters

Parameter	Value
Manufacturer Part Number	TPS73132DBVR
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3.2V
Output Current	150mA
Input Voltage (Max)	5.5V
Voltage Dropout (Max)	0.1V @ 150mA
Package / Case	SOT-23-5 (SC-74A, SOT-753)
Operating Temperature Range	-40°C to 125°C
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TPS73132DBVR is determined by the following critical parameters:

Output voltage fixed at 3.2V
Output current capability of 150mA or greater
Maximum input voltage of 5.5V or greater
SOT-23-5 package compatibility
Operating temperature range of -40°C to 125°C (preferred)
Surface mount mounting type
RoHS3 compliance

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications with different packaging or product status) and manufacturer-recommended alternatives (enhanced performance or higher current capability while maintaining core compatibility).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout @ Rated Current	Package	Operating Temp	Product Status
TPS73132DBVR	Texas Instruments	3.2V	150mA	5.5V	0.1V @ 150mA	SOT-23-5	-40°C to 125°C	Last Time Buy
TPS73132DBVT	Texas Instruments	3.2V	150mA	5.5V	0.1V @ 150mA	SOT-23-5	-40°C to 125°C	Last Time Buy
LP3985IM5-3.2/NOPB	Texas Instruments	3.2V	150mA	6V	0.1V @ 150mA	SOT-23-5	-40°C to 125°C	Active
MIC5265-3.2YD5-TR	Microchip Technology	3.2V	150mA	5.5V	0.5V @ 150mA	TSOT-23-5	-40°C to 125°C	Active
AP7315-32W5-7	Diodes Incorporated	3.2V	150mA	5.25V	0.29V @ 150mA	SOT-25	-40°C to 85°C	Active
LDK120M32R	STMicroelectronics	3.2V	200mA	5.5V	0.3V @ 200mA	SOT-23-5	-40°C to 125°C	Active
TPS7A2032PDBVR	Texas Instruments	3.2V	300mA	6V	0.145V @ 300mA	SOT-23-5	-40°C to 125°C	Active
RT9020-32GB	Richtek USA Inc.	3.2V	500mA	5.5V	0.4V @ 500mA	SOT-23-5	-40°C to 85°C	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: TPS73132DBVT is an exact electrical equivalent with identical specifications. Both devices are Last Time Buy status from Texas Instruments. Selection between these two depends on packaging format availability (Tape & Reel for both).

Recommended Active Alternatives:

LP3985IM5-3.2/NOPB (Texas Instruments) is the preferred substitute for new designs. It maintains identical output voltage and current specifications, extends maximum input voltage to 6V, and carries Active product status ensuring long-term availability. Operating temperature range matches the original part.

LDK120M32R (STMicroelectronics) provides increased output current capability at 200mA while maintaining 3.2V output and SOT-23-5 package compatibility. This part is suitable for applications requiring higher current headroom and offers Active status with extended inventory.

TPS7A2032PDBVR (Texas Instruments) delivers 300mA output current in the same package, providing significant performance margin for demanding applications. Enhanced quiescent current performance (15µA vs. 550µA) reduces standby power consumption. Active product status ensures supply continuity.

Alternative Considerations:

MIC5265-3.2YD5-TR (Microchip Technology) offers extremely low quiescent current at 2µA, beneficial for battery-powered applications. Package variant is TSOT-23-5 (thin profile). Higher dropout voltage (0.5V) may impact applications with tight input voltage margins.

AP7315-32W5-7 (Diodes Incorporated) provides Active status and low quiescent current (60µA). Operating temperature range is limited to -40°C to 85°C. Input voltage maximum is 5.25V, requiring verification against system design specifications.

RT9020-32GB (Richtek USA Inc.) supports 500mA output current for high-current applications. Operating temperature range is -40°C to 85°C. Moisture sensitivity level is MSL-3, requiring controlled storage conditions.

All recommended substitutes maintain RoHS3 compliance and SOT-23-5 or compatible package formats suitable for surface mount assembly.

Frequently Asked Questions (FAQ)

Q: Can TPS73132DBVT be used as a direct replacement for TPS73132DBVR?

A: Yes. TPS73132DBVT is a parametric equivalent with identical electrical specifications, output voltage, current rating, and operating temperature range. Both are Last Time Buy products from Texas Instruments. Substitution is direct for existing designs.

Q: What is the primary reason to migrate from TPS73132DBVR?

A: The TPS73132DBVR is Last Time Buy status, indicating production discontinuation. LP3985IM5-3.2/NOPB is the recommended migration path, offering identical core specifications with Active product status and extended supply availability.

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

A: Most substitutes use SOT-23-5 or compatible packages (SC-74A, SOT-753). MIC5265-3.2YD5-TR uses TSOT-23-5 (thin variant), and AP7315-32W5-7 uses SOT-25. Verify PCB footprint compatibility before selection.

Q: What is the impact of higher dropout voltage in substitute parts?

A: Dropout voltage affects minimum input voltage required for regulation. MIC5265-3.2YD5-TR has 0.5V dropout versus 0.1V in the original part. For 5V input systems, this reduces available headroom. Verify input voltage specifications in your application.

Q: Can I use higher current-rated substitutes like TPS7A2032PDBVR or LDK120M32R?

A: Yes. Higher current-rated parts are backward compatible with 150mA load requirements. They provide design margin and future scalability. No circuit modifications are required; pin-compatible packages ensure direct substitution.

Q: What are the quiescent current differences among substitutes?

A: Quiescent current varies significantly: TPS7A2032PDBVR (15µA), LDK120M32R (60µA), MIC5265-3.2YD5-TR (2µA), versus TPS73132DBVR (550µA). Lower quiescent current reduces standby power consumption in battery-powered applications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance, ensuring compatibility with environmental and regulatory requirements.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape for automated assembly lines. Cut Tape (CT) & Digi-Reel® is supplied in smaller quantities on tape. Both formats are compatible with standard pick-and-place equipment; selection depends on production volume and inventory requirements.

Q: Should I consider operating temperature range when selecting a substitute?

A: Yes. The original TPS73132DBVR operates -40°C to 125°C. AP7315-32W5-7 and RT9020-32GB are limited to -40°C to 85°C. Verify your application's temperature requirements before substitution.

Q: Is MSL (Moisture Sensitivity Level) a critical factor for substitution?

A: MSL-1 (unlimited shelf life) is standard for most substitutes. RT9020-32GB is MSL-3, requiring controlled storage at ≤30% relative humidity. Verify storage and handling procedures if MSL-3 parts are selected.

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