TPS76950DBVR Equivalent & Substitute Parts

Part Overview

The TPS76950DBVR is a linear voltage regulator IC from Texas Instruments, delivering a fixed 5V output at 100mA in a SOT-23-5 surface mount package. This device is classified as Active product status and is currently in stock with 1785 units available. The TPS76950DBVR serves applications requiring low-dropout regulation with integrated protection features including over-current, over-temperature, and reverse polarity protection.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or application requirements demand enhanced performance characteristics such as higher output current capacity or improved quiescent current specifications.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	100mA
Input Voltage (Max)	10V
Voltage Dropout (Max)	0.17V @ 100mA
Quiescent Current (Iq)	28 µA
PSRR	60dB (1kHz)
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: fixed output voltage of 5V, SOT-23-5 package compatibility, surface mount mounting type, and output current capacity equal to or greater than 100mA. All substitute parts maintain the same output voltage and package form factor, ensuring direct pin-compatible replacement capability.

The substitute parts are categorized into two groups:

Parametric Equivalents (Pin-Compatible, Identical Specifications): Parts that match all electrical specifications of the TPS76950DBVR, including 100mA output current and 0.17V dropout voltage. These parts differ only in packaging format (Cut Tape vs. Tape & Reel) or product status.

Manufacturer Recommended Alternatives (Enhanced Specifications): Parts that exceed the minimum performance requirements by offering higher output current capacity (150mA to 200mA), lower quiescent current, or improved PSRR characteristics. These parts maintain 5V fixed output and SOT-23-5 package compatibility while providing additional design margin.

Parameter Comparison

Part Number	Manufacturer	Output Current	Voltage Dropout (Max)	Quiescent Current (Iq)	PSRR	Input Voltage (Max)	Operating Temp	Product Status	Packaging
TPS76950DBVR	Texas Instruments	100mA	0.17V @ 100mA	28 µA	60dB (1kHz)	10V	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
TPS76950DBVT	Texas Instruments	100mA	0.17V @ 100mA	28 µA	60dB (1kHz)	10V	-40°C ~ 125°C	Last Time Buy	Cut Tape (CT)
TPS76950QDBVRQ1	Texas Instruments	100mA	0.17V @ 100mA	28 µA	60dB (1kHz)	10V	-40°C ~ 125°C	Active	Tape & Reel (TR)
LDK220M50R	STMicroelectronics	200mA	0.35V @ 200mA	90 µA	55dB ~ 50dB (120Hz ~ 10kHz)	13.2V	-40°C ~ 125°C	Active	Cut Tape (CT) & Digi-Reel®
S-1200B50-M5T1U	ABLIC Inc.	150mA	0.19V @ 100mA	1 µA	65dB (1kHz)	10V	-40°C ~ 85°C (TA)	Active	Tape & Reel (TR)
S-814A50AMC-BDOT2U	ABLIC Inc.	180mA	0.21V @ 60mA	500 nA	45dB (100Hz)	10V	-40°C ~ 85°C (TA)	Active	Cut Tape (CT)

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

TPS76950QDBVRQ1 is the recommended direct substitute when the TPS76950DBVR reaches end-of-life. This part maintains identical electrical specifications and is qualified to AEC-Q100 automotive standards with Active product status. The only difference is packaging format (Tape & Reel vs. Cut Tape), which does not affect electrical performance or pin compatibility.

TPS76950DBVT provides an alternative direct replacement with identical specifications but carries Last Time Buy status, indicating limited future availability. This part is suitable only for applications where immediate inventory procurement is feasible.

For Enhanced Performance Applications:

LDK220M50R from STMicroelectronics offers doubled output current capacity (200mA) while maintaining 5V fixed output and SOT-23-5 package compatibility. This part is suitable for applications requiring additional current margin or where load current may increase beyond the original 100mA specification. The higher input voltage rating (13.2V) provides extended input range capability.

S-1200B50-M5T1U from ABLIC Inc. provides 150mA output current with significantly reduced quiescent current (1 µA vs. 28 µA), making it advantageous for battery-powered or ultra-low-power applications. PSRR performance is improved to 65dB at 1kHz. Operating temperature range is limited to -40°C ~ 85°C.

S-814A50AMC-BDOT2U from ABLIC Inc. delivers 180mA output current with ultra-low quiescent current (500 nA), optimized for power-sensitive designs. This part is suitable for applications prioritizing standby power consumption reduction. Operating temperature range is limited to -40°C ~ 85°C.

All substitute parts maintain ROHS3 compliance and are REACH unaffected, meeting regulatory requirements equivalent to the primary part.

Frequently Asked Questions (FAQ)

Q: Can TPS76950QDBVRQ1 replace TPS76950DBVR in all applications?

A: Yes. TPS76950QDBVRQ1 is a parametric equivalent with identical electrical specifications, output current, dropout voltage, and quiescent current. The only difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel), which does not affect circuit performance or pin compatibility. Both parts are pin-compatible in SOT-23-5 packages.

Q: What is the difference between parametric equivalents and manufacturer recommended alternatives?

A: Parametric equivalents (TPS76950DBVT and TPS76950QDBVRQ1) match all electrical specifications of the primary part, including 100mA output current. Manufacturer recommended alternatives (LDK220M50R, S-1200B50-M5T1U, S-814A50AMC-BDOT2U) exceed minimum specifications by offering higher output current capacity or improved quiescent current characteristics. All maintain 5V fixed output and SOT-23-5 package compatibility.

Q: Can I use LDK220M50R as a drop-in replacement?

A: LDK220M50R is pin-compatible in the SOT-23-5 package and maintains 5V fixed output. However, it is not a direct replacement due to different electrical characteristics: 200mA output current (vs. 100mA), 0.35V dropout voltage (vs. 0.17V), and 90 µA quiescent current (vs. 28 µA). Use this part only when higher output current capacity is required or when the application can tolerate increased dropout voltage and quiescent current.

Q: Which substitute part has the lowest quiescent current?

A: S-814A50AMC-BDOT2U has the lowest quiescent current at 500 nA, followed by S-1200B50-M5T1U at 1 µA. These parts are optimized for battery-powered and ultra-low-power applications where standby current consumption is critical.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the SOT-23-5 package (SC-74A, SOT-753), ensuring mechanical and electrical pin compatibility. Packaging format differs (Cut Tape, Tape & Reel, or Digi-Reel), but this affects only procurement and handling, not circuit integration.

Q: What is the operating temperature range limitation for ABLIC parts?

A: S-1200B50-M5T1U and S-814A50AMC-BDOT2U are rated for -40°C ~ 85°C, which is narrower than the TPS76950DBVR range of -40°C ~ 125°C. These parts are unsuitable for applications requiring operation above 85°C ambient temperature.

Q: Can I use these substitutes in automotive applications?

A: TPS76950QDBVRQ1 is qualified to AEC-Q100 automotive standards and is suitable for automotive applications. Other substitute parts do not carry automotive qualification designations. Verify automotive compliance requirements with application specifications before selection.

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