TPS79330DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS79330DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 200mA in SOT-23-5 surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The device provides integrated protection features including over-current, over-temperature, reverse polarity, and under-voltage lockout (UVLO) functionality, making it suitable for low-power applications requiring stable 3V regulation from input sources up to 5.5V.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3V
Output Current	200mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.2V @ 200mA
Quiescent Current	220 µA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature Range	-40°C to 150°C
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO

Substitute Part Grouping Explanation

Substitution for the TPS79330DBVRG4 is determined by the following critical parameters:

Output voltage fixed at 3V
Output current capability (200mA minimum for direct equivalence)
Input voltage maximum rating of 5.5V or higher
SOT-23-5 package compatibility
Surface mount mounting type
Operating temperature range support

Substitute parts are grouped into two categories:

Parametric Equivalent: TPS79330DBVR matches all electrical specifications and package requirements identically, differing only in packaging format (Cut Tape & Digi-Reel vs. standard packaging).

Manufacturer Recommended Alternatives: Parts from Microchip Technology (MIC5255 and MIC5305 series) and Richtek (RT9193-30GB) provide 3V fixed output with reduced current ratings (150mA) or alternative electrical characteristics. The ABLIC S-1137D30-M5T1U offers 300mA capability but is obsolete.

Parameter Comparison

Parameter	TPS79330DBVRG4	TPS79330DBVR	MIC5255-3.0YM5-TR	MIC5255-3.0YD5-TR	MIC5305-3.0YD5-TR	RT9193-30GB	S-1137D30-M5T1U
Manufacturer	Texas Instruments	Texas Instruments	Microchip Technology	Microchip Technology	Microchip Technology	Richtek USA Inc.	ABLIC Inc.
Output Voltage	3V	3V	3V	3V	3V	3V	3V
Output Current	200mA	200mA	150mA	150mA	150mA	300mA	300mA
Input Voltage (Max)	5.5V	5.5V	6V	6V	5.5V	5.5V	5.5V
Dropout Voltage (Max)	0.2V @ 200mA	0.2V @ 200mA	0.25V @ 150mA	0.25V @ 150mA	0.85V @ 150mA	0.3V @ 300mA	0.31V @ 300mA
Quiescent Current	220 µA	220 µA	150 µA	150 µA	150 µA	130 µA	1 µA
Package Type	SOT-23-5	SOT-23-5	SOT-23-5	TSOT-23-5	TSOT-23-5	SOT-23-5	SOT-23-5
Operating Temperature	-40°C to 150°C	-40°C to 150°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 85°C
Product Status	Discontinued	Active	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: TPS79330DBVR

The TPS79330DBVR is the direct parametric equivalent to the discontinued TPS79330DBVRG4. It maintains identical electrical specifications including 200mA output current, 0.2V dropout voltage at rated current, and 220 µA quiescent current. The part is currently active with 44,200 units in stock. Both parts are ROHS3 compliant and carry identical protection features. The only difference is packaging format (Cut Tape & Digi-Reel vs. standard packaging), which does not affect electrical performance or PCB integration.

Secondary Recommendations for Current-Limited Applications:

MIC5255-3.0YM5-TR and MIC5255-3.0YD5-TR from Microchip Technology provide 3V fixed output with reduced 150mA current capability. These parts are suitable for applications where 150mA output current is sufficient. The MIC5255-3.0YM5-TR uses standard SOT-23-5 packaging (SC-74A), while the MIC5255-3.0YD5-TR uses thin TSOT-23-5 packaging. Both are ROHS3 compliant and active products with good inventory availability.

Alternative for Higher Current Capability:

RT9193-30GB from Richtek USA Inc. provides 300mA output current in SOT-23-5 packaging, exceeding the original 200mA specification. This part is suitable for applications requiring higher current headroom. It is ROHS3 compliant and active with 20,100 units in stock. Quiescent current is lower at 130 µA compared to 220 µA in the original part.

Not Recommended:

S-1137D30-M5T1U from ABLIC Inc. is obsolete and should not be selected for new designs despite offering 300mA capability. The reduced operating temperature range (-40°C to 85°C) and obsolete status make this part unsuitable for ongoing procurement.

MIC5305-3.0YD5-TR exhibits significantly higher dropout voltage (0.85V @ 150mA) compared to the original specification (0.2V @ 200mA), making it unsuitable for applications with tight input-to-output voltage margins.

Frequently Asked Questions (FAQ)

Q: Can I use TPS79330DBVR as a direct replacement for TPS79330DBVRG4?

A: Yes. TPS79330DBVR is a parametric equivalent with identical electrical specifications. The difference in packaging format (Cut Tape & Digi-Reel) does not affect electrical performance or PCB integration. Both parts are ROHS3 compliant and provide the same 3V output at 200mA with 0.2V dropout voltage.

Q: What is the difference between SOT-23-5 and TSOT-23-5 packages?

A: TSOT-23-5 is a thin variant of SOT-23-5 with reduced height. Both packages are mechanically and electrically compatible for PCB mounting. Verify PCB footprint requirements before selecting thin variants. MIC5255-3.0YD5-TR and MIC5305-3.0YD5-TR use TSOT-23-5, while MIC5255-3.0YM5-TR uses standard SOT-23-5.

Q: Can I use MIC5255 series parts as substitutes if my application only requires 150mA?

A: Yes, if your application current requirement does not exceed 150mA. MIC5255-3.0YM5-TR and MIC5255-3.0YD5-TR provide identical 3V output voltage with lower quiescent current (150 µA vs. 220 µA). Both are ROHS3 compliant and active products. Verify that 150mA output current is sufficient for your design.

Q: Why is the operating temperature range different between substitutes?

A: Different manufacturers design for different temperature specifications. The original TPS79330DBVRG4 supports -40°C to 150°C. Most substitutes support -40°C to 125°C. Verify your application's temperature requirements before selecting a substitute. S-1137D30-M5T1U has the most limited range (-40°C to 85°C) and is obsolete.

Q: What is the impact of higher dropout voltage in MIC5305-3.0YD5-TR?

A: MIC5305-3.0YD5-TR has 0.85V dropout voltage at 150mA compared to 0.2V in the original part. This means the input voltage must be at least 0.85V higher than the 3V output to maintain regulation. Applications with tight input voltage margins may not be suitable for this substitute. Verify your input voltage headroom before selection.

Q: Is RT9193-30GB suitable for designs requiring exactly 200mA?

A: Yes. RT9193-30GB provides 300mA output capability, which exceeds the 200mA requirement. It is ROHS3 compliant, active, and offers lower quiescent current (130 µA). The higher current rating provides design margin without affecting performance at 200mA operation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all recommended substitute parts (TPS79330DBVR, MIC5255 series, MIC5305-3.0YD5-TR, and RT9193-30GB) are ROHS3 compliant. S-1137D30-M5T1U is also ROHS3 compliant but is obsolete and not recommended for new designs.

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