TPS73230DBVT Equivalent & Substitute Parts

Part Overview

The TPS73230DBVT is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3V output at 250mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited availability. Finding equivalent and substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications requiring 3V regulation with moderate current demands.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3V
Output Current	250mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.15V @ 250mA
Quiescent Current	550 µA
Package	SOT-23-5
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TPS73230DBVT is determined by the following critical parameters:

Output Voltage: Must be fixed at 3V
Output Current: Must meet or exceed 250mA
Input Voltage Range: Must support maximum 5.5V
Package Type: Must be SOT-23-5 or equivalent footprint
Operating Temperature Range: Must cover -40°C ~ 125°C
Protection Features: Must include Over Current and Over Temperature protection

Substitute parts are grouped into two categories:

Parametric Equivalent: Identical electrical specifications and packaging (TPS73230DBVR)

Manufacturer Recommended Alternatives: Parts meeting core substitution criteria with variations in output current, dropout voltage, or quiescent current specifications (RT9193-30GB, MIC5305-3.0YD5-TR, MIC5319-3.0YD5-TR, LDK130M-R)

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout Voltage (Max)	Quiescent Current	Package	Product Status
TPS73230DBVT	Texas Instruments	3V (Fixed)	250mA	0.15V @ 250mA	550 µA	SOT-23-5	Last Time Buy
TPS73230DBVR	Texas Instruments	3V (Fixed)	250mA	0.15V @ 250mA	550 µA	SOT-23-5	Active
RT9193-30GB	Richtek USA Inc.	3V (Fixed)	300mA	0.3V @ 300mA	130 µA	SOT-23-5	Active
MIC5319-3.0YD5-TR	Microchip Technology	3V (Fixed)	500mA	0.4V @ 500mA	150 µA	TSOT-23-5	Active
MIC5305-3.0YD5-TR	Microchip Technology	3V (Fixed)	150mA	0.85V @ 150mA	150 µA	TSOT-23-5	Active
LDK130M-R	STMicroelectronics	0.8V ~ 5.1V (Adjustable)	300mA	0.4V @ 300mA	60 µA	SOT-23-5	Active

Engineering Selection Recommendations

Direct Replacement (Recommended for Immediate Substitution)

TPS73230DBVR is the primary substitute, offering identical electrical specifications and packaging to the TPS73230DBVT. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Last Time Buy). This part maintains full compatibility with existing PCB designs and requires no circuit modifications.

Active Alternatives (For New Designs or Higher Current Requirements)

RT9193-30GB provides 300mA output current with improved dropout voltage (0.3V) and lower quiescent current (130 µA) compared to the original part. This device is suitable for applications where the additional current margin and lower power consumption are beneficial.

MIC5319-3.0YD5-TR delivers 500mA output current, providing significant headroom for current-demanding applications. The TSOT-23-5 package is mechanically compatible with SOT-23-5 footprints. Lower quiescent current (150 µA) reduces standby power consumption.

MIC5305-3.0YD5-TR is suitable only for applications requiring 150mA or less, as its output current rating falls below the original specification. Higher dropout voltage (0.85V @ 150mA) may impact performance in low-input-voltage scenarios.

Adjustable Alternative (For Flexible Output Voltage Requirements)

LDK130M-R from STMicroelectronics is an adjustable regulator capable of delivering 0.8V to 5.1V output. While not a direct 3V fixed replacement, it can be configured for 3V operation through external resistor dividers. This part includes automotive-grade qualification (AEC-Q100) and significantly lower quiescent current (60 µA), making it suitable for battery-powered or power-sensitive applications. Circuit redesign is required for implementation.

All substitute parts maintain RoHS3 compliance, unlimited moisture sensitivity level (MSL 1), and operating temperature range of -40°C ~ 125°C, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can TPS73230DBVR be used as a direct drop-in replacement for TPS73230DBVT?

A: Yes. TPS73230DBVR is electrically and functionally identical to TPS73230DBVT. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status. No circuit modifications are required.

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 share the same footprint and pin configuration, making them mechanically compatible on PCBs. Verify clearance in your specific design if height is constrained.

Q: Can MIC5305-3.0YD5-TR replace TPS73230DBVT in all applications?

A: No. MIC5305-3.0YD5-TR has a maximum output current of 150mA, which is below the original 250mA specification. Use this part only in applications requiring 150mA or less. Higher dropout voltage (0.85V) may also affect performance in low-input-voltage designs.

Q: Is LDK130M-R a suitable replacement without circuit changes?

A: No. LDK130M-R is an adjustable regulator requiring external resistor dividers to set the 3V output. Circuit redesign is necessary. However, it offers advantages including automotive qualification, lower quiescent current, and higher output current (300mA).

Q: Which substitute offers the best performance for battery-powered applications?

A: RT9193-30GB and MIC5319-3.0YD5-TR both offer lower quiescent current than the original part. RT9193-30GB provides 130 µA quiescent current with 300mA output, while MIC5319-3.0YD5-TR delivers 150 µA with 500mA output. LDK130M-R offers the lowest quiescent current at 60 µA but requires circuit modifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original TPS73230DBVT.

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

A: Higher dropout voltage reduces the minimum input voltage required to maintain regulation. For example, MIC5305-3.0YD5-TR has 0.85V dropout at 150mA, requiring approximately 3.85V minimum input. The original TPS73230DBVT requires only 3.15V minimum input at 250mA. Verify your input voltage margin before selection.

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