TOP244GN Equivalent & Substitute Parts

Part Overview

The TOP244GN is an offline switch flyback converter IC manufactured by Power Integrations, part of the TOPSwitch®-GX series. This component functions as an integrated power management solution for isolated flyback topology applications, operating at switching frequencies between 66kHz and 132kHz with a maximum power output of 28W.

The TOP244GN is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this offline flyback converter topology.

Substiute Parts

TOP244GN

Power IntegrationsIn Stock: 17559TOP244GN Datasheet

Current PartRFQ

TOP244GN-TL

Power IntegrationsIn Stock: 25093TOP244GN-TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TOP244GN is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Topology: Flyback (isolated converter)
• Output Isolation: Isolated
• Voltage - Breakdown: 700V
• Frequency - Switching: 66kHz ~ 132kHz
• Power (Watts): 28W
• Duty Cycle: 66.5%
• Package / Case: 8-SMD (7 Leads), Gull Wing
• Supplier Device Package: SMD-8B
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 150°C (TJ)
• Fault Protection: Current Limiting, Over Temperature, Over Voltage
• Control Features: Frequency Control
• Series: TOPSwitch®-GX

The TOP244GN-TL is identified as a direct substitute. Both components share identical electrical specifications, thermal characteristics, and mechanical packaging. The primary distinction is packaging format: TOP244GN-TL is supplied in Tape & Reel (TR) configuration, whereas the TOP244GN uses standard packaging. Both maintain RoHS compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

TOP244GN-TL Substitution:

The TOP244GN-TL is electrically and mechanically equivalent to the TOP244GN. Selection between these two variants should be based on procurement and assembly requirements:

• TOP244GN-TL (Tape & Reel): Suitable for high-volume automated assembly operations. Tape & Reel packaging is optimized for pick-and-place equipment and reduces component handling time in manufacturing environments.

• TOP244GN (Standard Packaging): Appropriate for lower-volume production, prototype development, or manual assembly scenarios.

Both components maintain identical RoHS compliance and REACH unaffected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions.

Product Status Consideration:

The TOP244GN is discontinued at DiGi Electronics. The TOP244GN-TL carries a "Not For New Designs" status. For new design initiatives, evaluation of alternative TOPSwitch®-GX series components with enhanced availability and active product status may be warranted, though such alternatives are not provided in the current substitution dataset.

Frequently Asked Questions (FAQ)

Q: Can TOP244GN-TL be used as a direct replacement for TOP244GN in existing designs?

A: Yes. The TOP244GN-TL is electrically and mechanically identical to the TOP244GN. Both components operate at 700V breakdown voltage, 28W power output, 66kHz ~ 132kHz switching frequency, and share the same 8-SMD (7 Leads) Gull Wing package. The primary difference is packaging format (Tape & Reel versus standard packaging). PCB layout, schematic integration, and thermal management remain unchanged.

Q: What is the significance of the Tape & Reel (TR) packaging designation?

A: Tape & Reel packaging is a standardized format for automated component placement during surface mount assembly. Components are wound on a continuous tape with regular spacing, compatible with pick-and-place machinery. This format reduces manual handling and accelerates high-volume production. Standard packaging is typically used for lower-volume applications or manual assembly.

Q: Are there compliance differences between TOP244GN and TOP244GN-TL?

A: No. Both components maintain identical RoHS compliance and REACH unaffected status. Environmental and hazardous substance regulatory requirements are equivalent across both variants.

Q: What does "Not For New Designs" status mean for TOP244GN-TL?

A: This designation indicates that the manufacturer does not recommend this component for new product development. However, it remains available for existing design support and production continuity. For new designs, consultation with Power Integrations regarding current TOPSwitch®-GX series alternatives is recommended.

Q: Are the thermal and operating temperature characteristics identical?

A: Yes. Both TOP244GN and TOP244GN-TL operate across the same temperature range of -40°C to 150°C (junction temperature). Thermal management requirements, heat dissipation calculations, and thermal design considerations are identical.

Q: What is the Moisture Sensitivity Level (MSL) rating, and why is it important?

A: Both components carry an MSL rating of 4 (72 Hours). This indicates that the component can be exposed to ambient conditions (typically 30°C, 60% relative humidity) for a maximum of 72 hours after packaging before requiring reflow soldering. Extended storage or exposure beyond this period requires controlled dry-pack conditions to prevent moisture absorption, which can cause delamination or solder joint failure during thermal processing.