TL780-05CKTTR Equivalent & Substitute Parts

Part Overview

The TL780-05CKTTR is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 5V output at 1.5A maximum current in a TO-263 (DDPAK-3) surface mount package. The device provides protection against overcurrent, overtemperature, reverse polarity, and short circuit conditions, making it suitable for regulated power supply applications requiring moderate current delivery.

The TL780-05CKTTR carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this regulator.

Substiute Parts

TL780-05CKTTR

Texas InstrumentsIn Stock: 1778TL780-05CKTTR Datasheet

Current PartRFQ

UA7805CKTTR

Texas InstrumentsIn Stock: 16125UA7805CKTTR Datasheet

MFR RecommendedRFQ

LM340S-5.0/NOPB

Texas InstrumentsIn Stock: 5324LM340S-5.0/NOPB Datasheet

MFR RecommendedRFQ

LM340SX-5.0/NOPB

Texas InstrumentsIn Stock: 19612LM340SX-5.0/NOPB Datasheet

MFR RecommendedRFQ

TL780-05CKTTRG3

Texas InstrumentsIn Stock: 1557TL780-05CKTTRG3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL780-05CKTTR is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 5V
• Output current capability of 1.5A
• TO-263 (DDPAK-3) surface mount package
• Operating temperature range of 0°C to 125°C
• RoHS3 compliance and REACH unaffected status
• Protection feature set (minimum: Over Temperature and Reverse Polarity)

Parts are grouped into two categories:

Manufacturer Recommended Substitutes: Parts with identical or superior electrical specifications and active or last-time-buy product status, ensuring design compatibility and functional equivalence.

Parametric Equivalents: Parts with matching core electrical parameters but potentially different product status or protection feature configurations, suitable for applications where the specific protection feature set of the original part is not critical.

Parameter Comparison

Legend: OCP = Over Current Protection; OTP = Over Temperature Protection; SCP = Short Circuit Protection

Engineering Selection Recommendations

For Active Production or New Designs:

Select LM340S-5.0/NOPB or LM340SX-5.0/NOPB. Both parts carry Active product status, ensuring long-term availability and supply chain stability. The LM340 series offers superior input voltage tolerance (35V maximum versus 25V), providing additional design margin in applications with variable input sources. Both parts are RoHS3 compliant and REACH unaffected. The primary difference between these two is packaging: LM340S-5.0/NOPB is supplied in Tube packaging, while LM340SX-5.0/NOPB is supplied in Cut Tape (CT) & Digi-Reel format, allowing selection based on assembly requirements.

For Legacy System Support or Maintenance:

UA7805CKTTR is available as a Last Time Buy option with 16,108 pieces in stock. This part maintains electrical compatibility with the TL780-05CKTTR while offering significantly higher inventory availability. Note that UA7805CKTTR provides reduced protection features (Over Temperature and Reverse Polarity only, without Over Current and Short Circuit protection). Verify that the application does not depend on the additional protection mechanisms of the original part before selection.

For Direct Parametric Equivalence:

TL780-05CKTTRG3 is a parametric equivalent with identical electrical specifications and protection feature set to the TL780-05CKTTR. However, it carries Obsolete product status with limited inventory (1,465 pieces). This option is suitable only for immediate replacement needs where design continuity is critical and supply is confirmed available.

Frequently Asked Questions (FAQ)

Q: Can I use LM340S-5.0/NOPB as a direct replacement for TL780-05CKTTR?

A: Yes. Both parts deliver 5V at 1.5A in the TO-263 (DDPAK-3) package with identical dropout voltage and operating temperature range. The LM340S-5.0/NOPB offers superior input voltage rating (35V versus 25V), making it functionally superior. The primary difference is protection feature configuration: LM340S-5.0/NOPB provides Over Temperature and Short Circuit protection, while TL780-05CKTTR also includes Over Current and Reverse Polarity protection. Verify your application does not require the additional protection features before substitution.

Q: What is the difference between LM340S-5.0/NOPB and LM340SX-5.0/NOPB?

A: Electrical specifications and performance are identical between these two parts. The difference is packaging format: LM340S-5.0/NOPB is supplied in Tube packaging, while LM340SX-5.0/NOPB is supplied in Cut Tape (CT) & Digi-Reel format. Select based on your assembly process requirements and inventory handling procedures.

Q: Why does UA7805CKTTR have fewer protection features than TL780-05CKTTR?

A: UA7805CKTTR is a different device variant within the Texas Instruments regulator portfolio. While it maintains electrical compatibility for output voltage, current, and dropout specifications, it implements a reduced protection feature set (Over Temperature and Reverse Polarity only). This is a design choice by the manufacturer. Confirm that your application does not depend on Over Current or Short Circuit protection before selecting this substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed—TL780-05CKTTR, UA7805CKTTR, LM340S-5.0/NOPB, LM340SX-5.0/NOPB, and TL780-05CKTTRG3—are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part offers the best long-term availability?

A: LM340S-5.0/NOPB and LM340SX-5.0/NOPB both carry Active product status, ensuring continued manufacturing and supply. These are the recommended choices for new designs or systems requiring extended production support. Both parts have substantial inventory availability (5,300 and 19,540 pieces respectively).

Q: Can I use TL780-05CKTTRG3 as a replacement?

A: TL780-05CKTTRG3 is a parametric equivalent with identical specifications and protection features to TL780-05CKTTR. However, it carries Obsolete product status with limited inventory. Use this part only for immediate replacement needs where supply is confirmed and design continuity is critical. For new production, select an Active status part instead.