TL499ACPG4 Equivalent & Substitute Parts

Part Overview

The TL499ACPG4 is a boost switching regulator IC from Texas Instruments designed for step-up voltage conversion applications. It delivers positive adjustable output from 2.9V to 30V with 1A switch current capability in an 8-DIP through-hole package. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications requiring boost regulation topology with adjustable output voltage.

Substiute Parts

TL499ACPG4

Texas InstrumentsIn Stock: 1039TL499ACPG4 Datasheet

Current PartRFQ

TL499ACP

Texas InstrumentsIn Stock: 21728TL499ACP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TL499ACPG4 is determined by strict equivalence across the following critical parameters:

• Function: Step-Up (Boost) topology
• Output Configuration: Positive adjustable voltage
• Voltage Range: Input 1V–10V, Output 2.9V–30V
• Current Rating: 1A switch current
• Package: 8-DIP through-hole form factor
• Number of Outputs: Single output
• Synchronous Rectifier: Not present
• Operating Temperature Range: -20°C to 85°C
• Regulatory Compliance: ROHS3 and REACH requirements

The TL499ACP variant meets all these criteria and is identified as the manufacturer-recommended substitute. Both parts share the same base product number (TL499) and are manufactured by Texas Instruments, ensuring functional and electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The TL499ACP is the direct substitute for the TL499ACPG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, functional characteristics, and package geometry. The primary distinction is product status: the TL499ACPG4 is discontinued, while the TL499ACP remains in active production with significantly higher inventory availability (21,650 units versus 979 units).

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production continuity. The TL499ACP is supplied in tube packaging, which is standard for active production components. Pin-for-pin compatibility and identical performance parameters ensure direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the TL499ACP directly replace the TL499ACPG4 in existing designs?

A: Yes. Both parts are electrically and functionally identical with matching pin configurations, voltage specifications, current ratings, and package dimensions. Direct substitution is possible without circuit modification.

Q: What is the difference between TL499ACPG4 and TL499ACP?

A: The parts are functionally equivalent. The primary differences are product status (discontinued versus active) and packaging format. The TL499ACP is the active production variant with superior availability.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status. Regulatory requirements are satisfied by either part.

Q: What is the significance of the packaging difference?

A: The TL499ACP is supplied in tube packaging, which is standard for active production components. This does not affect electrical performance or pin compatibility. Tube packaging is suitable for automated assembly processes.

Q: Can I use the TL499ACP in applications originally designed for the TL499ACPG4?

A: Yes. The identical electrical specifications, output voltage range (2.9V–30V), input voltage range (1V–10V), and 1A switch current rating ensure full compatibility across all boost regulator applications.

Q: What should I verify when substituting these parts?

A: Verify that your PCB layout accommodates the 8-DIP through-hole package footprint (0.300", 7.62mm spacing). No other verification is required due to complete electrical equivalence.