TL783CKCSE3 Equivalent & Substitute Parts

Part Overview

The TL783CKCSE3 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 700mA output current in a TO-220-3 through-hole package and operates across an input voltage range up to 125V with adjustable output from 1.25V to 125V. The device includes over-temperature and short-circuit protection features.

This part is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring comparable performance characteristics.

Substiute Parts

TL783CKCSE3

Texas InstrumentsIn Stock: 16353TL783CKCSE3 Datasheet

Current PartRFQ

TPS7A4001DGNR

Texas InstrumentsIn Stock: 25389TPS7A4001DGNR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TPS7A4001DGNR is identified as a manufacturer-recommended substitute for the TL783CKCSE3. Substitution eligibility is determined by the following critical parameters:

Output Configuration: Both devices provide positive adjustable output regulation, meeting the fundamental functional requirement.

Output Type: Both regulators feature adjustable output voltage capability, enabling voltage setting flexibility in circuit design.

Number of Regulators: Both devices integrate a single regulator output, maintaining functional equivalence.

Voltage Range Compatibility: The TPS7A4001DGNR supports input voltages up to 100V and adjustable output from 1.175V to 90V, which covers the majority of applications within the TL783CKCSE3 operating envelope, though with reduced maximum input and output voltage limits.

Protection Features: Both devices include over-temperature protection. The TPS7A4001DGNR provides additional protection through over-current and under-voltage lockout features.

Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The TPS7A4001DGNR is an active product with full manufacturer support, providing regulatory compliance through ROHS3 certification and REACH unaffected status. This substitute is suitable for applications where output current requirements do not exceed 50mA and input/output voltage specifications remain within the TPS7A4001DGNR operating range (100V maximum input, 90V maximum output).

The transition from through-hole TO-220-3 packaging to surface-mount 8-TSSOP packaging requires PCB layout redesign. The TPS7A4001DGNR includes enhanced protection features (over-current and under-voltage lockout) and extended operating temperature range (-40°C to 125°C), providing additional design margin in certain applications.

Applications requiring the full 700mA output current of the TL783CKCSE3 cannot use the TPS7A4001DGNR as a direct substitute due to its 50mA current limitation.

Frequently Asked Questions (FAQ)

Q: Can the TPS7A4001DGNR replace the TL783CKCSE3 in all applications?

A: No. The TPS7A4001DGNR is limited to 50mA output current, while the TL783CKCSE3 delivers 700mA. Substitution is valid only for applications requiring 50mA or less. Additionally, the TPS7A4001DGNR maximum output voltage is 90V compared to 125V for the TL783CKCSE3, and maximum input voltage is 100V versus 125V.

Q: What are the packaging differences between these parts?

A: The TL783CKCSE3 uses through-hole TO-220-3 packaging for PCB insertion mounting. The TPS7A4001DGNR uses surface-mount 8-TSSOP packaging with an exposed pad. PCB redesign is required for substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the TL783CKCSE3 and TPS7A4001DGNR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What protection features does each regulator provide?

A: The TL783CKCSE3 includes over-temperature and short-circuit protection. The TPS7A4001DGNR provides over-current, over-temperature, and under-voltage lockout (UVLO) protection, offering more comprehensive fault coverage.

Q: What is the operating temperature range for each device?

A: The TL783CKCSE3 operates from 0°C to 125°C. The TPS7A4001DGNR operates from -40°C to 125°C, providing extended low-temperature capability.

Q: How do the PSRR specifications compare?

A: The TL783CKCSE3 provides 76dB PSRR at 120Hz. The TPS7A4001DGNR provides 65dB PSRR at 100Hz. The TL783CKCSE3 offers superior power supply rejection ratio performance.