TPS73615DCQR Equivalent & Substitute Parts

Part Overview

The TPS73615DCQR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.5V output applications with 400mA current capacity in SOT-223-6 surface mount packaging. This device is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. The TPS73615DCQR incorporates enable control, over-current protection, over-temperature protection, and reverse polarity protection within a compact form factor suitable for space-constrained applications.

Substiute Parts

TPS73615DCQR

Texas InstrumentsIn Stock: 2138TPS73615DCQR Datasheet

Current PartRFQ

TLV75515PDBVR

Texas InstrumentsIn Stock: 6268TLV75515PDBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS73615DCQR is determined by the following critical parameters:

• Fixed output voltage of 1.5V
• Maximum input voltage of 5.5V
• Positive output configuration
• Surface mount technology
• Operating temperature range of -40°C to 125°C
• ROHS3 compliance and REACH unaffected status
• Enable control and protection features (over-current, over-temperature)

The TLV75515PDBVR qualifies as a manufacturer-recommended substitute based on matching output voltage, input voltage rating, output configuration, operating temperature range, and regulatory compliance. While the substitute offers higher output current capacity (500mA versus 400mA) and improved quiescent current performance, these represent functional enhancements rather than deviations from the core substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

The TLV75515PDBVR is the manufacturer-recommended substitute for the obsolete TPS73615DCQR. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. The substitute is currently in active production status, providing long-term availability and supply chain stability compared to the obsolete original part.

The TLV75515PDBVR delivers enhanced performance characteristics including reduced quiescent current (31 µA versus 550 µA) and increased output current capacity (500mA versus 400mA). These improvements support applications requiring lower standby power consumption and higher load current capability. The substitute operates within the same input voltage and temperature specifications as the original device.

Package differences exist between the two devices: the original TPS73615DCQR uses SOT-223-6 packaging while the TLV75515PDBVR uses SOT-23-5 packaging. PCB layout modifications are required to accommodate this package change. Moisture sensitivity levels differ, with the substitute offering superior moisture resistance (MSL 1 Unlimited versus MSL 2 1 Year).

Frequently Asked Questions (FAQ)

Q: Can the TLV75515PDBVR directly replace the TPS73615DCQR without circuit modifications?

A: The TLV75515PDBVR is functionally compatible for the core 1.5V fixed output regulation function. However, package differences (SOT-223-6 to SOT-23-5) require PCB layout redesign. The substitute lacks reverse polarity protection present in the original device; circuit-level protection may be necessary depending on application requirements.

Q: What are the key differences in electrical performance between these devices?

A: The TLV75515PDBVR provides higher output current capacity (500mA versus 400mA) and significantly lower quiescent current (31 µA versus 550 µA). Dropout voltage is higher at the substitute's rated current (0.425V @ 500mA versus 0.2V @ 400mA). Both devices maintain identical output voltage and input voltage specifications.

Q: Are there supply chain advantages to using the substitute part?

A: Yes. The TLV75515PDBVR is in active production status with substantially higher inventory availability (6200 pieces versus 2100 pieces). The original TPS73615DCQR is obsolete, presenting long-term sourcing risk. The substitute ensures design continuity and production support.

Q: How do the package differences affect implementation?

A: The TPS73615DCQR uses 6-pin SOT-223 packaging while the TLV75515PDBVR uses 5-pin SOT-23 packaging. Pin configurations differ, requiring schematic and PCB redesign. The smaller SOT-23-5 footprint may provide space savings in some applications.

Q: What compliance certifications apply to both devices?

A: Both the TPS73615DCQR and TLV75515PDBVR are ROHS3 compliant and REACH unaffected. The substitute offers improved moisture sensitivity classification (MSL 1 Unlimited versus MSL 2 1 Year), reducing moisture-related reliability concerns in storage and handling.