TPS73216DBVT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS73216DBVT is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) device. It delivers a fixed positive output of 1.6V at 250mA in a surface-mount SOT-23-5 package. The device is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this voltage regulation specification.

Substiute Parts

TPS73216DBVT

Texas InstrumentsIn Stock: 2378TPS73216DBVT Datasheet

Current PartRFQ

TPS78401DBVR

Texas InstrumentsIn Stock: 4921TPS78401DBVR Datasheet

MFR RecommendedRFQ

RT9193-16GB

Richtek USA Inc.In Stock: 23498RT9193-16GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS73216DBVT are selected based on the following critical parameters that define functional equivalence:

• Output voltage specification: 1.6V fixed output
• Output current capability: minimum 250mA
• Package compatibility: SOT-23-5 surface mount
• Input voltage range: maximum 5.5V or higher
• Operating temperature range: -40°C to 125°C
• Control features: Enable function
• Protection features: Over current, over temperature protection

The substitute parts identified meet these core requirements while offering either improved specifications (higher current capacity, lower quiescent current, better PSRR) or active product status for long-term availability.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the TPS73216DBVT, the following selection criteria apply:

TPS78401DBVR (Texas Instruments): This part maintains Texas Instruments manufacturer continuity and offers active product status. The adjustable output configuration (1.2V to 5.5V) provides design flexibility beyond the fixed 1.6V output. Output current is increased to 300mA, exceeding the original specification. Quiescent current is significantly reduced to 35 µA, improving power efficiency. The higher input voltage rating (6V vs 5.5V) provides additional margin. This part is suitable for designs requiring higher current capacity or where adjustable voltage output is beneficial.

RT9193-16GB (Richtek USA Inc.): This part provides a direct fixed-output equivalent at 1.6V with increased current capacity (300mA). It offers superior PSRR performance (70dB ~ 50dB) compared to the original part, beneficial for noise-sensitive applications. Quiescent current is lower at 130 µA. Active product status ensures long-term availability. This part is recommended for direct replacement where fixed 1.6V output is required and improved performance characteristics are advantageous.

Both substitute parts are ROHS3 compliant and operate across the same temperature range (-40°C to 125°C), ensuring compatibility with existing thermal and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the TPS78401DBVR directly replace the TPS73216DBVT?

A: The TPS78401DBVR is functionally compatible in terms of package (SOT-23-5), operating temperature range, and protection features. However, it features adjustable output voltage (1.2V to 5.5V) rather than fixed 1.6V output. If your application requires exactly 1.6V output, external resistors must be configured to set this voltage. The increased current capacity (300mA vs 250mA) and lower quiescent current (35 µA vs 550 µA) are performance improvements.

Q: Is the RT9193-16GB a pin-compatible replacement?

A: Yes. The RT9193-16GB shares the same SOT-23-5 package and pinout as the TPS73216DBVT. It provides the same fixed 1.6V output voltage with increased current capacity (300mA) and improved PSRR performance. No circuit modifications are required for direct substitution.

Q: What are the key differences between the two substitute parts?

A: The TPS78401DBVR offers adjustable output voltage and significantly lower quiescent current (35 µA), making it suitable for battery-powered or low-power applications. The RT9193-16GB maintains fixed 1.6V output with superior PSRR characteristics, making it ideal for noise-sensitive analog circuits. Both exceed the original 250mA current specification at 300mA.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both the TPS78401DBVR and RT9193-16GB are ROHS3 compliant, matching the compliance status of the original TPS73216DBVT.

Q: Why is the TPS73216DBVT in Last Time Buy status?

A: Last Time Buy status indicates Texas Instruments has discontinued this product line. Identifying active substitute parts ensures design continuity and prevents supply chain disruption. Both recommended substitutes are in Active status with established inventory availability.