TPS73625MDBVREP Equivalent & Substitute Parts

Part Overview

The TPS73625MDBVREP is a linear voltage regulator IC manufactured by Texas Instruments, designed for positive fixed output applications. This active product delivers 400mA output current at a fixed 2.5V output with a maximum dropout voltage of 0.2V at full load. The device is housed in a SOT-23-5 surface mount package and includes integrated protection features for over-current, over-temperature, and reverse polarity conditions. Finding equivalent substitute parts may be necessary due to inventory constraints, lead time requirements, or specific application performance needs.

Substiute Parts

TPS73625MDBVREP

Texas InstrumentsIn Stock: 2943TPS73625MDBVREP Datasheet

Current PartRFQ

RT9193-25GB

Richtek USA Inc.In Stock: 86160RT9193-25GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS73625MDBVREP are qualified based on the following critical parameters that determine functional compatibility:

Output Voltage Match: The substitute must provide the same fixed 2.5V output voltage to ensure direct compatibility with downstream circuitry.

Package Compatibility: The substitute must use the SOT-23-5 (SC-74A) surface mount package to maintain PCB layout and assembly compatibility.

Input Voltage Range: The substitute must accept the same maximum input voltage of 5.5V to operate within the same power supply environment.

Output Current Capability: While the primary part delivers 400mA, substitutes with equal or greater current capacity maintain full functional equivalence. Substitutes with lower current ratings (such as 300mA) are acceptable only when the application circuit does not require the full 400mA specification.

Protection Features: The substitute should include over-current and over-temperature protection as baseline requirements for safe operation.

Product Status and Compliance: Active product status and ROHS3 compliance ensure long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The RT9193-25GB qualifies as a functional substitute for the TPS73625MDBVREP based on matching output voltage (2.5V), input voltage range (5.5V max), and identical SOT-23-5 package configuration. Both devices maintain active product status and ROHS3 compliance, ensuring regulatory alignment and long-term supply viability.

The primary design consideration is output current capacity. The RT9193-25GB delivers 300mA compared to the TPS73625MDBVREP's 400mA specification. This substitute is appropriate for applications where the maximum load current does not exceed 300mA. Applications requiring the full 400mA output current must retain the primary part number.

The RT9193-25GB exhibits superior power supply rejection ratio (PSRR) performance at 70dB ~ 50dB versus 58dB ~ 37dB, and lower quiescent current consumption at 130 µA versus 550 µA. These characteristics may provide performance advantages in noise-sensitive or battery-powered applications. However, the RT9193-25GB lacks reverse polarity protection and operates over a narrower temperature range (-40°C to 125°C versus -55°C to 125°C), which may be limiting factors in extreme environment applications.

Frequently Asked Questions (FAQ)

Q: Can the RT9193-25GB directly replace the TPS73625MDBVREP in all applications?

A: Direct replacement is possible only when the application circuit does not require output current exceeding 300mA. The RT9193-25GB is rated for 300mA maximum output, while the TPS73625MDBVREP supports 400mA. Both devices share identical output voltage (2.5V), input voltage range (5.5V max), and SOT-23-5 package configuration, enabling PCB-level compatibility. Applications operating below 300mA load current can use the substitute without circuit modification.

Q: What are the key differences between these two regulators?

A: The primary differences are output current capacity (400mA vs. 300mA), quiescent current consumption (550 µA vs. 130 µA), PSRR performance (58dB ~ 37dB vs. 70dB ~ 50dB), operating temperature range (-55°C to 125°C vs. -40°C to 125°C), and protection features. The TPS73625MDBVREP includes reverse polarity protection while the RT9193-25GB does not. The RT9193-25GB offers lower power consumption and superior noise rejection characteristics.

Q: Are there package compatibility concerns?

A: No. Both devices use the SOT-23-5 (SC-74A) surface mount package with identical pin configurations and footprints. PCB layout and assembly processes require no modification for substitution.

Q: What is the impact of the RT9193-25GB's narrower operating temperature range?

A: The RT9193-25GB operates from -40°C to 125°C, compared to the TPS73625MDBVREP's -55°C to 125°C range. Applications requiring operation below -40°C must use the primary part number. Standard commercial and industrial temperature range applications (-40°C to 125°C) are unaffected.

Q: Does the absence of reverse polarity protection in the RT9193-25GB affect substitution suitability?

A: Reverse polarity protection is a design feature that prevents device damage if input voltage is connected with incorrect polarity. The TPS73625MDBVREP includes this protection; the RT9193-25GB does not. Applications with robust input polarity control or external protection circuitry can use the substitute. Applications relying on the regulator's internal reverse polarity protection must retain the primary part number.

Q: How do the quiescent current differences affect system design?

A: The RT9193-25GB consumes 130 µA quiescent current versus 550 µA for the TPS73625MDBVREP. In battery-powered or low-power standby applications, the RT9193-25GB's lower quiescent current reduces overall system power consumption. This advantage is most significant in applications where the regulator operates continuously with minimal load current.