TEA1522T/N2,518 Equivalent & Substitute Parts

Part Overview

The TEA1522T/N2,518 is an offline switch flyback converter IC manufactured by NXP USA Inc., designed for isolated power management applications. This component operates in the STARplug™ series and features a 650V breakdown voltage with integrated current limiting, over-temperature, and short-circuit protection. The part is classified as Not For New Designs, indicating it has been superseded in NXP's product portfolio. Organizations requiring this functionality must evaluate qualified substitute components that maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

TEA1522T/N2,518

NXP USA Inc.In Stock: 1062TEA1522T/N2,518 Datasheet

Current PartRFQ

TEA1723AT/N1,118

NXP USA Inc.In Stock: 100305TEA1723AT/N1,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TEA1522T/N2,518 is determined by the following critical parameters:

• Topology: Flyback converter architecture
• Output Isolation: Isolated output configuration
• Voltage - Breakdown: Minimum 650V rating
• Voltage - Supply Range: Compatibility with 7.5V ~ 40V input
• Power Rating: Minimum 30W capability
• Frequency - Switching: Operating range 10kHz ~ 200kHz
• Package / Case: Surface mount SOIC configuration
• Fault Protection: Current limiting, over-temperature, and short-circuit protection
• RoHS Compliance: ROHS3 Compliant status

The identified substitute TEA1723AT/N1,118 operates as a flyback converter within NXP's product family. However, critical parameter differences exist that must be evaluated for application compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TEA1723AT/N1,118 is an active product from NXP USA Inc. and represents the current generation within the GreenChip™ series. However, direct substitution requires careful evaluation due to multiple parameter deviations:

Electrical Incompatibilities:

• Output isolation differs (isolated vs. non-isolated)
• Supply voltage range is narrower and offset higher (8.5V ~ 20V vs. 7.5V ~ 40V)
• Startup voltage requirement is significantly higher (17V vs. 9.5V)
• Power rating is lower (11W vs. 30W)
• Switching frequency range is narrower and offset higher (22.5kHz ~ 50.5kHz vs. 10kHz ~ 200kHz)
• Operating temperature range is narrower (−40°C ~ 85°C vs. −40°C ~ 145°C)

Mechanical Incompatibilities:

• Package configuration differs (14-SOIC with 14 leads vs. 8-SOIC with 7 leads)
• PCB layout and pinout require redesign

Compliance Status: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent parts.

The TEA1723AT/N1,118 is suitable only for applications where the narrower electrical specifications, lower power rating, non-isolated output, and different package configuration align with redesigned circuit requirements. Direct pin-for-pin substitution is not feasible.

Frequently Asked Questions (FAQ)

Q: Can the TEA1723AT/N1,118 be used as a direct replacement for the TEA1522T/N2,518?

A: No. The TEA1723AT/N1,118 differs in output isolation (non-isolated vs. isolated), supply voltage range, startup voltage, power rating, switching frequency range, package configuration, and pin count. Circuit redesign is required.

Q: What is the primary reason for substitution?

A: The TEA1522T/N2,518 is classified as Not For New Designs. The TEA1723AT/N1,118 is an active product from the same manufacturer and represents current-generation technology.

Q: Are there package compatibility issues?

A: Yes. The TEA1522T/N2,518 uses a 14-SOIC package with 14 leads, while the TEA1723AT/N1,118 uses an 8-SOIC package with 7 leads. PCB layout and routing must be redesigned.

Q: What are the critical electrical differences?

A: The substitute has a narrower supply voltage range (8.5V ~ 20V vs. 7.5V ~ 40V), higher startup voltage requirement (17V vs. 9.5V), lower power rating (11W vs. 30W), narrower switching frequency range (22.5kHz ~ 50.5kHz vs. 10kHz ~ 200kHz), and non-isolated output instead of isolated output.

Q: Do both components meet regulatory compliance?

A: Yes. Both the TEA1522T/N2,518 and TEA1723AT/N1,118 are ROHS3 compliant and REACH unaffected.

Q: What is the operating temperature difference?

A: The TEA1522T/N2,518 operates from −40°C to 145°C (junction temperature), while the TEA1723AT/N1,118 operates from −40°C to 85°C (ambient temperature). The substitute has a narrower range.

Q: Which fault protection features differ?

A: The TEA1522T/N2,518 includes current limiting, over-temperature, and short-circuit protection. The TEA1723AT/N1,118 includes over-temperature, over-voltage, and short-circuit protection. The substitute lacks current limiting but adds over-voltage protection.