TPS73616DBVT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS73616DBVT is a linear voltage regulator IC manufactured by Texas Instruments, designed for positive fixed 1.6V output at 400mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating end-of-life status. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring 1.6V regulated output with the specified electrical and mechanical characteristics.

Substiute Parts

TPS73616DBVT

Texas InstrumentsIn Stock: 1419TPS73616DBVT Datasheet

Current PartRFQ

TLV75801PDBVR

Texas InstrumentsIn Stock: 52276TLV75801PDBVR Datasheet

MFR RecommendedRFQ

RT9193-16GB

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS73616DBVT is determined by the following critical parameters:

Primary Substitution Criteria:

• Package compatibility: SOT-23-5 (SC-74A, SOT-753)
• Output voltage: 1.6V fixed output
• Minimum output current: 400mA or greater
• Maximum input voltage: 5.5V or greater
• Operating temperature range: -40°C to 125°C or wider
• Surface mount technology
• Regulatory compliance: ROHS3 Compliant

Substitute Parts Identified:

1. TLV75801PDBVR (Texas Instruments) – Manufacturer recommended substitute with adjustable output capability and higher current rating (500mA). Can be configured for 1.6V fixed output through external resistor network.

2. RT9193-16GB (Richtek USA Inc.) – Direct fixed-output equivalent with 1.6V output and 300mA current rating. Lower current capacity requires application-level verification.

Parameter Comparison

Engineering Selection Recommendations

TLV75801PDBVR Selection: This Texas Instruments part is manufacturer-recommended and maintains active product status. It offers superior current capacity (500mA vs. 400mA) and significantly lower quiescent current (35 µA vs. 550 µA). The adjustable output topology requires external resistor configuration to achieve 1.6V fixed output, adding minimal circuit complexity. Higher maximum input voltage (6V) provides additional design margin. Recommended for new designs and applications where quiescent current optimization is beneficial.

RT9193-16GB Selection: This Richtek part provides direct fixed-output equivalence at 1.6V with no external configuration required. Output current is rated at 300mA, which is 75% of the original specification. This part is suitable only for applications where load current does not exceed 300mA. Quiescent current (130 µA) is lower than the original but higher than the TLV75801PDBVR. Moisture sensitivity level is MSL 3 (168 hours) compared to MSL 1 for the original part, requiring attention to storage and handling conditions.

Both substitute parts maintain ROHS3 compliance and the required operating temperature range. Selection should be based on specific application current requirements and circuit design flexibility.

Frequently Asked Questions (FAQ)

Q: Can the TLV75801PDBVR directly replace the TPS73616DBVT without circuit modifications?

A: No. The TLV75801PDBVR is an adjustable-output regulator and requires external resistor divider network configuration to set the output voltage to 1.6V. The TPS73616DBVT is a fixed-output device requiring no external components for voltage setting. Circuit redesign is necessary for TLV75801PDBVR implementation.

Q: Is the RT9193-16GB suitable for all applications using TPS73616DBVT?

A: The RT9193-16GB is suitable only for applications where load current does not exceed 300mA. The original TPS73616DBVT is rated for 400mA output current. Applications requiring the full 400mA specification must use TLV75801PDBVR or verify that actual load current remains below 300mA.

Q: Are all substitute parts available in the same package?

A: Yes. Both TLV75801PDBVR and RT9193-16GB are available in SOT-23-5 (SC-74A, SOT-753) surface mount package, identical to the original TPS73616DBVT. PCB layout compatibility is maintained.

Q: What is the impact of different quiescent current specifications?

A: Quiescent current affects standby power consumption and heat generation. TLV75801PDBVR (35 µA) consumes significantly less standby power than TPS73616DBVT (550 µA), beneficial for battery-powered applications. RT9193-16GB (130 µA) provides intermediate performance. Selection depends on application duty cycle and power budget requirements.

Q: Are there compliance or certification differences between the parts?

A: All three parts are ROHS3 compliant and REACH unaffected. RT9193-16GB has MSL 3 (168 hours) moisture sensitivity versus MSL 1 (unlimited) for the other parts. This affects storage, handling, and shelf-life requirements in manufacturing environments.

Q: What is the voltage dropout difference and its significance?

A: TPS73616DBVT has 0.2V dropout at 400mA. TLV75801PDBVR has 0.88V dropout at 500mA. Lower dropout voltage allows operation with lower input voltage or higher efficiency. Applications with tight input voltage margins should account for this difference in power supply design.