TOP244R-TL Equivalent & Substitute Parts

Part Overview

The TOP244R-TL is an offline switch flyback converter IC from Power Integrations' TOPSwitch®-GX series, designed for isolated power supply applications. This device operates in the 66kHz to 132kHz switching frequency range with a 50W power rating and integrates internal current limiting, over-temperature, and over-voltage protection. The TOP244R-TL is classified as "Not For New Designs," indicating it has reached end-of-life status. For ongoing production requirements or new design implementations, equivalent substitute parts from the same TOPSwitch®-GX family provide compatible functionality with varying power ratings.

Substiute Parts

TOP244R-TL

Power IntegrationsIn Stock: 5329TOP244R-TL Datasheet

Current PartRFQ

TOP243R-TL

Power IntegrationsIn Stock: 1972TOP243R-TL Datasheet

Parametric EquivalentRFQ

TOP245R-TL

Power IntegrationsIn Stock: 16214TOP245R-TL Datasheet

Parametric EquivalentRFQ

TOP246R-TL

Power IntegrationsIn Stock: 1842TOP246R-TL Datasheet

Parametric EquivalentRFQ

TOP247R-TL

Power IntegrationsIn Stock: 1730TOP247R-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts within the TOPSwitch®-GX family are qualified as equivalent based on the following criteria:

Electrical Compatibility Parameters:

• Identical topology (Flyback)
• Identical output isolation (Isolated)
• Identical voltage breakdown rating (700V)
• Identical switching frequency range (66kHz ~ 132kHz)
• Identical duty cycle (66.5%)
• Identical operating temperature range (-40°C ~ 150°C)
• Identical fault protection features (Current Limiting, Over Temperature, Over Voltage)
• Identical control features (Frequency Control)

Mechanical Compatibility Parameters:

• Identical package type (TO-263-7, D2PAK with 6 Leads + Tab)
• Identical supplier device package (TO-263-7C)
• Identical mounting type (Surface Mount)

Variable Parameter:

• Power rating (45W to 70W across the family)

The substitute parts differ only in their maximum power output rating, which ranges from 45W (TOP243R-TL) to 70W (TOP247R-TL). All other electrical and mechanical specifications remain constant across the family.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: All parts in this family, including the main part TOP244R-TL and all substitutes (TOP243R-TL, TOP245R-TL, TOP246R-TL, TOP247R-TL), carry the designation "Not For New Designs." This status indicates these components have reached end-of-life and are no longer recommended for new product development. Selection among these parts should be limited to legacy system support, maintenance, or existing production continuation where design changes are not feasible.

Compliance and Certification: All parts share identical compliance profiles:

• RoHS non-compliant
• REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001
• Moisture Sensitivity Level (MSL): 4 (72 Hours)

Power Rating Selection: When substituting the TOP244R-TL (50W), select an alternative based on the actual power requirement of the application:

• TOP243R-TL (45W): For applications requiring lower power output
• TOP245R-TL (57W): For applications requiring higher power output with higher inventory availability
• TOP246R-TL (64W): For applications requiring significantly higher power output
• TOP247R-TL (70W): For applications requiring maximum power output within the family

Packaging Consideration: The TOP244R-TL is supplied in Cut Tape (CT) packaging. TOP243R-TL is supplied in Tape & Reel (TR) format. All other substitutes use Cut Tape (CT) packaging, matching the main part format.

Frequently Asked Questions (FAQ)

Q: Can TOP243R-TL replace TOP244R-TL in an existing design?

A: TOP243R-TL is electrically and mechanically compatible with TOP244R-TL. However, the power rating is lower (45W vs. 50W). Substitution is valid only if the application power requirement does not exceed 45W. All electrical parameters, switching characteristics, protection features, and package pinout are identical.

Q: What is the difference between TOP244R-TL and TOP245R-TL?

A: The primary difference is power rating: TOP244R-TL is rated at 50W while TOP245R-TL is rated at 57W. All other specifications are identical, including topology, switching frequency, voltage breakdown, operating temperature, and package type. TOP245R-TL has significantly higher inventory availability (16200 pcs vs. 5240 pcs).

Q: Are all substitute parts pin-compatible with TOP244R-TL?

A: Yes. All substitute parts use the identical TO-263-7 package configuration with 6 leads plus tab. The pinout and mechanical footprint are identical across all parts in this comparison.

Q: Can I use TOP247R-TL (70W) in place of TOP244R-TL (50W)?

A: Yes, from an electrical and mechanical compatibility standpoint. TOP247R-TL has identical electrical specifications and package configuration. However, the higher power rating indicates different internal design characteristics. Substitution is valid for applications where the higher power capability does not introduce thermal or design complications.

Q: What does "Not For New Designs" mean for these parts?

A: This designation indicates all parts in this family have reached end-of-life status and are no longer recommended for new product development. These parts should be used only for legacy system maintenance, repair, or continuation of existing production runs where design changes are not feasible.

Q: Is there a difference in packaging between Cut Tape (CT) and Tape & Reel (TR)?

A: Cut Tape and Tape & Reel are different supply formats for the same component. Cut Tape (CT) is supplied in smaller quantities on individual tape segments, while Tape & Reel (TR) is supplied in continuous reel format for higher-volume automated assembly. The electronic component itself is identical; only the packaging format differs.

Q: Are all these parts RoHS compliant?

A: No. All parts in this family, including TOP244R-TL and all substitutes, are RoHS non-compliant. If RoHS compliance is required, these parts are not suitable for the application.