TL783CKTTR Equivalent & Substitute Parts

Part Overview

The TL783CKTTR is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This Surface Mount device delivers 700mA output current in a TO-263 (DDPAK-3) package and operates across an input voltage range up to 125V with adjustable output from 1.25V to 125V. The device is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.

Substiute Parts

TL783CKTTR

Texas InstrumentsIn Stock: 3418TL783CKTTR Datasheet

Current PartRFQ

TPS7A4001DGNR

Texas InstrumentsIn Stock: 25389TPS7A4001DGNR Datasheet

MFR RecommendedRFQ

TL783CKTTRG3

Texas InstrumentsIn Stock: 2439TL783CKTTRG3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL783CKTTR are identified based on strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Output Configuration: Positive adjustable
• Output Type: Adjustable voltage regulation
• Voltage range compatibility: Input maximum 100V or greater; output adjustable range encompassing or exceeding 1.25V minimum
• Current capacity: Minimum 50mA (for reduced-current applications)
• Package compatibility: Surface Mount technology
• Manufacturer: Texas Instruments
• Compliance: ROHS3 Compliant

Substitution Categories:

Parametric Equivalent: TL783CKTTRG3 matches the TL783CKTTR across all electrical specifications and package configuration, differing only in manufacturing date code designation.

Manufacturer Recommended Substitute: TPS7A4001DGNR provides positive adjustable voltage regulation with reduced output current (50mA versus 700mA) and enhanced protection features. This part is suitable for applications where the full 700mA output is not required and where the lower current rating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

TL783CKTTRG3 Selection: Select TL783CKTTRG3 when parametric equivalence to the TL783CKTTR is required. This part maintains identical electrical specifications and package configuration. Both parts carry Last Time Buy status; however, TL783CKTTRG3 offers reduced inventory availability (2426 Pcs versus 3310 Pcs). Both parts are ROHS3 Compliant and suitable for equivalent design implementations.

TPS7A4001DGNR Selection: Select TPS7A4001DGNR when output current requirements do not exceed 50mA and when active product status is prioritized. This part is currently in Active production status, ensuring long-term availability and supply chain stability. The TPS7A4001DGNR provides enhanced protection features including Over Current, Over Temperature, and Under Voltage Lockout (UVLO). Extended operating temperature range (-40°C ~ 125°C) supports broader environmental applications. Package change from TO-263 to 8-HVSSOP requires PCB layout modification. Input voltage maximum is reduced to 100V; output voltage maximum is reduced to 90V. ROHS3 Compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can TL783CKTTRG3 be used as a direct replacement for TL783CKTTR?

A: Yes. TL783CKTTRG3 is a parametric equivalent with identical electrical specifications, output current (700mA), voltage ranges (input 125V max, output 1.25V to 125V), and package configuration (TO-263 DDPAK-3). No circuit modifications are required.

Q: What are the limitations of TPS7A4001DGNR as a substitute?

A: TPS7A4001DGNR has reduced output current (50mA versus 700mA), lower input voltage maximum (100V versus 125V), and lower output voltage maximum (90V versus 125V). Package change from TO-263 to 8-HVSSOP requires PCB redesign. This part is suitable only for applications where these reduced ratings are acceptable.

Q: Why is TPS7A4001DGNR recommended despite lower current rating?

A: TPS7A4001DGNR is recommended for applications requiring only 50mA or less output current because it offers Active product status, ensuring long-term supply availability. It also provides enhanced protection features (Over Current, Under Voltage Lockout) and extended operating temperature range (-40°C ~ 125°C).

Q: Are all substitute parts ROHS3 Compliant?

A: Yes. TL783CKTTR, TL783CKTTRG3, and TPS7A4001DGNR are all ROHS3 Compliant, meeting environmental and regulatory requirements.

Q: What is the inventory status of each part?

A: TL783CKTTR has 3310 Pcs in stock. TL783CKTTRG3 has 2426 Pcs in stock. TPS7A4001DGNR has 25300 Pcs in stock, providing the highest availability.

Q: Does package change affect circuit design?

A: Yes. TPS7A4001DGNR uses 8-HVSSOP package versus TO-263 DDPAK-3 for the original part. PCB layout, thermal management, and component placement must be redesigned. Pin configuration differs and requires schematic review.

Q: What is the difference in PSRR between these parts?

A: TL783CKTTR and TL783CKTTRG3 both provide 76dB PSRR at 120Hz. TPS7A4001DGNR provides 65dB PSRR at 100Hz, representing 11dB lower power supply rejection ratio.