TPS73132DBVT Equivalent & Substitute Parts

Part Overview

The TPS73132DBVT 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 limited future 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 space-constrained environments.

Key Parameters

Parameter	Value
Manufacturer Part Number	TPS73132DBVT
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3.2V
Output Current	150mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.1V @ 150mA
Package / Case	SOT-23-5 (SC-74A, SOT-753)
Operating Temperature	-40°C ~ 125°C
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TPS73132DBVT 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 or wider
Surface mount mounting type

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts with active product status and full feature parity or enhanced capabilities.

Parametric Equivalents: Parts with identical electrical specifications but different product status or packaging variants.

Parameter Comparison

Parameter	TPS73132DBVT	TPS73132DBVR	TPS7A2032PDBVR	LP3985IM5-3.2/NOPB	LDK120M32R	MIC5265-3.2YD5-TR	RT9020-32GB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics	Microchip Technology	Richtek USA Inc.
Output Voltage	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V	3.2V
Output Current	150mA	150mA	300mA	150mA	200mA	150mA	500mA
Input Voltage (Max)	5.5V	5.5V	6V	6V	5.5V	5.5V	5.5V
Dropout Voltage (Max)	0.1V @ 150mA	0.1V @ 150mA	0.145V @ 300mA	0.1V @ 150mA	0.3V @ 200mA	0.5V @ 150mA	0.4V @ 500mA
Quiescent Current (Iq)	550 µA	550 µA	15 µA	150 µA	60 µA	2 µA	50 µA
Package / Case	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	TSOT-23-5	SOT-23-5
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Product Status	Last Time Buy	Last Time Buy	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	-

Engineering Selection Recommendations

For Direct Replacement (Last Time Buy Mitigation):

TPS73132DBVR is the parametric equivalent with identical electrical specifications and Last Time Buy status. This part maintains full compatibility with existing designs and PCB layouts.

For Active Product Status with Enhanced Performance:

TPS7A2032PDBVR offers doubled output current (300mA) with significantly reduced quiescent current (15 µA vs. 550 µA), making it suitable for power-sensitive applications. Higher input voltage rating (6V) provides additional design margin. Product status is Active, ensuring long-term availability.

LP3985IM5-3.2/NOPB maintains identical output current and dropout voltage specifications with lower quiescent current (150 µA). Active product status and ROHS3 compliance support long-term supply chain continuity.

For Higher Current Requirements:

LDK120M32R (200mA) and RT9020-32GB (500mA) accommodate applications requiring output currents exceeding 150mA. Both are Active products with ROHS3 compliance. Note that RT9020-32GB has a reduced operating temperature maximum of 85°C.

For Ultra-Low Quiescent Current Applications:

MIC5265-3.2YD5-TR delivers 2 µA quiescent current, ideal for battery-powered or always-on standby circuits. TSOT-23-5 package is mechanically compatible with SOT-23-5 footprints. Active product status ensures availability.

Frequently Asked Questions (FAQ)

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

A: Yes. TPS73132DBVR is a parametric equivalent with identical output voltage (3.2V), output current (150mA), dropout voltage (0.1V @ 150mA), and operating temperature range (-40°C ~ 125°C). Both are Last Time Buy products from Texas Instruments. PCB layout and design require no modification.

Q: What is the primary advantage of TPS7A2032PDBVR over the original TPS73132DBVT?

A: TPS7A2032PDBVR has Active product status, ensuring continued availability. It delivers doubled output current (300mA) and significantly lower quiescent current (15 µA vs. 550 µA), reducing power consumption in standby conditions. Input voltage rating is increased to 6V.

Q: Is MIC5265-3.2YD5-TR package compatible with SOT-23-5 PCB footprints?

A: MIC5265-3.2YD5-TR uses TSOT-23-5 (thin SOT-23-5) packaging. While mechanically compatible with standard SOT-23-5 footprints, verification of PCB land pattern tolerances is required for high-volume production.

Q: Why does RT9020-32GB have a lower maximum operating temperature (85°C vs. 125°C)?

A: RT9020-32GB is specified with a maximum junction temperature of 85°C, limiting its use in high-temperature environments. Applications requiring the full -40°C ~ 125°C range should select alternative substitutes.

Q: Can LP3985IM5-3.2/NOPB replace TPS73132DBVT in all applications?

A: LP3985IM5-3.2/NOPB is functionally compatible with identical output voltage, current, and dropout voltage specifications. It is supplied in Cut Tape (CT) & Digi-Reel® packaging rather than Tape & Reel. Verify packaging requirements for your procurement and assembly processes.

Q: What is the significance of ROHS3 compliance for these parts?

A: ROHS3 compliance indicates conformance to Restriction of Hazardous Substances regulations. All recommended substitutes except TPS7A2032PDBVR carry ROHS3 certification, supporting compliance with environmental and regulatory requirements in target markets.

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