TPS79228DBVT Equivalent & Substitute Parts

Part Overview

The TPS79228DBVT is a linear voltage regulator IC from Texas Instruments, configured as a positive fixed output regulator delivering 2.8V at 100mA. This device is packaged in SOT-23-5 and operates across the industrial temperature range of -40°C to 85°C. The part is currently in Last Time Buy status, making identification of suitable alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	2.8V
Output Current	100mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.11V @ 100mA
Quiescent Current	250 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 85°C
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TPS79228DBVT is determined by the following critical parameters: fixed output voltage of 2.8V, output current capability, maximum input voltage rating, dropout voltage performance, package compatibility (SOT-23-5 or equivalent thin variants), and operating temperature range. Substitute parts must maintain the same output voltage and support the required output current without exceeding the maximum input voltage specification. Package variants (SOT-23-5 standard vs. TSOT-23-5 thin) are mechanically compatible within the same footprint family.

The substitute parts are grouped into two categories:

Direct Parametric Equivalents: Parts with identical or superior electrical specifications that can replace the TPS79228DBVT in existing designs without modification.

Higher Current Capacity Alternatives: Parts with increased output current ratings (150mA to 500mA) that provide design flexibility for applications requiring additional current headroom while maintaining the 2.8V output voltage and SOT-23-5 package form factor.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Package	Operating Temp	Product Status
TPS79228DBVT	Texas Instruments	2.8V	100mA	5.5V	0.11V @ 100mA	250 µA	SOT-23-5	-40°C to 85°C	Last Time Buy
TPS79228DBVR	Texas Instruments	2.8V	100mA	5.5V	0.11V @ 100mA	250 µA	SOT-23-5	-40°C to 85°C	Last Time Buy
TPS7A2028PDBVR	Texas Instruments	2.8V	300mA	6V	0.14V @ 300mA	15 µA	SOT-23-5	-40°C to 125°C	Active
MIC5255-2.8YM5-TR	Microchip Technology	2.8V	150mA	6V	0.25V @ 150mA	150 µA	SOT-23-5	-40°C to 125°C	Active
MIC5255-2.8YD5-TR	Microchip Technology	2.8V	150mA	6V	0.25V @ 150mA	150 µA	TSOT-23-5	-40°C to 125°C	Active
MIC5301-2.8YD5-TR	Microchip Technology	2.8V	150mA	5.5V	0.1V @ 150mA	120 µA	TSOT-23-5	-40°C to 125°C	Active
MIC5305-2.8YD5-TR	Microchip Technology	2.8V	150mA	5.5V	Not specified	150 µA	TSOT-23-5	-40°C to 125°C	Active
MIC5319-2.8YD5-TR	Microchip Technology	2.8V	500mA	5.5V	0.4V @ 500mA	150 µA	TSOT-23-5	-40°C to 125°C	Active
MIC5323-2.8YD5-TR	Microchip Technology	2.8V	300mA	5.5V	0.22V @ 300mA	150 µA	TSOT-23-5	-40°C to 125°C	Active
RT9193-28GB	Richtek USA Inc.	2.8V	300mA	5.5V	0.3V @ 300mA	130 µA	SOT-23-5	-40°C to 125°C	Active
RT9193-28GJ5	Richtek USA Inc.	2.8V	300mA	5.5V	0.3V @ 300mA	130 µA	TSOT-23-5	-40°C to 125°C	Active

Engineering Selection Recommendations

For Direct Replacement (100mA Output Current):

TPS79228DBVR is the direct equivalent to TPS79228DBVT, differing only in packaging format (Cut Tape vs. Tape & Reel). Both parts share identical electrical specifications and Last Time Buy status. Selection between these two depends on procurement and assembly requirements.

For Active Product Continuity:

TPS7A2028PDBVR from Texas Instruments is the manufacturer-recommended upgrade path. This part maintains Texas Instruments sourcing while providing 300mA output current capacity, extended operating temperature range (-40°C to 125°C), and Active product status. The quiescent current is significantly reduced to 15 µA, improving power efficiency. Input voltage rating increases to 6V, providing additional design margin. This part is suitable for applications where the 100mA output current of the original part is insufficient or where long-term product availability is critical.

For Multi-Source Flexibility:

Microchip Technology MIC5255-2.8YM5-TR and MIC5301-2.8YD5-TR provide alternative sourcing with 150mA output current. MIC5301-2.8YD5-TR matches the 5.5V maximum input voltage of the original part and offers superior dropout voltage performance (0.1V @ 150mA). Both Microchip parts carry Active product status and extended temperature range support.

For Higher Current Applications:

MIC5323-2.8YD5-TR and RT9193-28GB deliver 300mA output current in SOT-23-5 compatible packages. MIC5323-2.8YD5-TR maintains the 5.5V input voltage specification, while RT9193-28GB provides the same rating. MIC5319-2.8YD5-TR extends output current to 500mA for demanding applications.

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can TPS79228DBVR directly replace TPS79228DBVT?

A: Yes. Both parts are parametrically identical with the same electrical specifications, output voltage, current rating, and operating temperature range. The difference is packaging format: DBVT is supplied in Tape & Reel, while DBVR is supplied in Cut Tape. Electrical performance and PCB footprint are identical.

Q: Why should I consider TPS7A2028PDBVR instead of staying with TPS79228DBVT?

A: TPS79228DBVT is in Last Time Buy status, indicating end-of-life. TPS7A2028PDBVR is the Texas Instruments recommended successor with Active product status, ensuring long-term availability. It provides 3x the output current (300mA vs. 100mA), lower quiescent current (15 µA vs. 250 µA), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). These improvements support future design iterations and reduce power consumption.

Q: Are SOT-23-5 and TSOT-23-5 packages interchangeable?

A: Yes, mechanically and electrically. TSOT-23-5 is a thin variant of SOT-23-5 with identical pin pitch and footprint. Both fit the same PCB land pattern. The primary difference is package height, which may be relevant for space-constrained applications. Electrical performance is not affected by package variant selection.

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

A: Dropout voltage determines the minimum input-to-output voltage differential required for regulation. The original TPS79228DBVT specifies 0.11V @ 100mA. Substitute parts with higher dropout voltages (e.g., MIC5255 at 0.25V @ 150mA) require proportionally higher input voltage to maintain stable 2.8V output. For applications with tight input voltage margins, select substitutes with lower dropout voltage specifications, such as MIC5301-2.8YD5-TR (0.1V @ 150mA).

Q: Can I use a higher current-rated part in place of the 100mA TPS79228DBVT?

A: Yes. Higher current-rated parts (150mA, 300mA, 500mA) are backward compatible with 100mA load requirements. The regulator will operate within its normal operating range at reduced current levels. This approach provides design margin for future load increases and simplifies inventory management through standardization on higher-capacity parts.

Q: What are the compliance and certification differences between substitute parts?

A: All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory standards. Moisture Sensitivity Level (MSL) varies: TPS79228DBVT and most Microchip parts are MSL 1 (Unlimited), while Richtek RT9193 series is MSL 3 (168 Hours). MSL 3 requires controlled storage and handling procedures during assembly. Select MSL 1 parts for applications with less stringent moisture control requirements.

Q: Which substitute part offers the best power efficiency?

A: TPS7A2028PDBVR provides the lowest quiescent current at 15 µA, compared to 250 µA for the original TPS79228DBVT. This 16x reduction in quiescent current directly reduces standby power consumption. For battery-powered or low-power applications, TPS7A2028PDBVR is the optimal choice.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message