LNK415LG LED Driver IC Equivalent & Substitute Parts

Part Overview

The LNK415LG is an AC DC offline switcher LED driver IC manufactured by Power Integrations, part of the LinkSwitch®-PH series. This device integrates a PWM controller with an internal power switch for single-output flyback topology applications in lighting systems. The LNK415LG operates across a wide input voltage range (36V to 725V) with a maximum output current of 1.24A and supports PWM dimming functionality. The part is actively produced, RoHS compliant, and carries unlimited moisture sensitivity rating (MSL 1). Identifying equivalent substitute parts becomes necessary when managing inventory constraints, ensuring supply chain continuity, or optimizing procurement across different packaging variants while maintaining identical electrical performance.

Substiute Parts

LNK415LG

Power IntegrationsIn Stock: 1760LNK415LG Datasheet

Current PartRFQ

LNK415EG

Power IntegrationsIn Stock: 16937LNK415EG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LNK415LG is determined by strict electrical and mechanical parameter matching within the LinkSwitch®-PH series. The critical parameters that define substitutability are:

Electrical Parameters (Must Match):

• Input voltage range: 36V to 725V
• Output current rating: 1.24A per channel
• Switching frequency: 66kHz
• Dimming capability: PWM control
• Topology: Flyback with integrated switch
• Single output configuration

Mechanical Parameters (Must Match):

• Through-hole mounting type
• 7-SSIP package family with 6 leads and exposed pad
• Formed lead configuration

Compliance Parameters (Must Match):

• RoHS compliant status
• MSL 1 rating
• Active product status

The LNK415LG and LNK415EG share identical electrical specifications and mounting characteristics. Both devices are manufactured by Power Integrations within the same LinkSwitch®-PH series and maintain the same base product number (LNK415). The distinction between these parts lies exclusively in the supplier device package designation: eSIP-7F versus eSIP-7C. This packaging variant difference does not affect electrical performance, thermal characteristics, or functional operation in equivalent circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The LNK415EG qualifies as a direct parametric equivalent to the LNK415LG based on complete alignment of all electrical, thermal, and functional specifications. Both devices are active products from Power Integrations with identical RoHS compliance and MSL ratings, ensuring regulatory and environmental compatibility across applications.

The only distinguishing factor between these parts is the supplier device package designation (eSIP-7F for LNK415LG versus eSIP-7C for LNK415EG). This packaging variant does not alter electrical performance, pin configuration, thermal dissipation characteristics, or circuit functionality. Both package variants maintain the same 7-SSIP footprint with 6 leads and exposed pad configuration suitable for through-hole mounting.

Selection between LNK415LG and LNK415EG should be based on:

1. Inventory Availability: LNK415EG maintains significantly higher stock levels (16,864 pcs) compared to LNK415LG (1,681 pcs), supporting supply chain continuity and procurement efficiency.

2. Packaging Specification Requirements: Confirm that the specific eSIP-7F or eSIP-7C package variant aligns with your procurement documentation and board assembly specifications.

3. Supplier Logistics: Evaluate supplier lead times and delivery schedules for each variant to optimize project timelines.

Both parts are suitable for LED driver applications requiring AC DC offline switching with PWM dimming control across the full 36V to 725V input voltage range.

Frequently Asked Questions (FAQ)

Q: Are LNK415LG and LNK415EG electrically interchangeable?

A: Yes. Both devices share identical electrical specifications including input voltage range (36V–725V), output current (1.24A), switching frequency (66kHz), and PWM dimming capability. They operate identically in equivalent circuit designs.

Q: What is the difference between eSIP-7F and eSIP-7C packaging?

A: eSIP-7F and eSIP-7C are supplier device package designations for variants of the 7-SSIP package family. Both maintain the same 7-pin configuration with 6 leads and exposed pad, suitable for through-hole mounting. The designation difference reflects supplier-specific packaging specifications but does not affect electrical performance or pin compatibility.

Q: Can I substitute LNK415LG with LNK415EG on an existing PCB design?

A: Yes, provided your PCB design accommodates the 7-SSIP through-hole package footprint. Both parts use identical pin configurations and mechanical dimensions within the 7-SSIP family. Verify that your board assembly process and supplier specifications accept the eSIP-7C package variant if switching from LNK415LG.

Q: Do both parts meet the same compliance standards?

A: Yes. Both LNK415LG and LNK415EG are RoHS compliant, carry MSL 1 (unlimited moisture sensitivity) rating, and maintain active product status from Power Integrations. They satisfy identical regulatory and environmental requirements.

Q: Which part should I select for new designs?

A: Selection should prioritize availability and supply chain stability. LNK415EG offers significantly higher inventory levels, supporting faster procurement and reduced lead times. Both parts are functionally equivalent for new LED driver applications requiring offline AC DC switching with PWM dimming control.

Q: Are there thermal performance differences between these parts?

A: No. Both devices operate across the identical temperature range (-40°C to 150°C junction temperature) and share the same thermal characteristics. The eSIP-7F and eSIP-7C package variants do not introduce thermal performance variations.

Q: What applications are these parts suitable for?

A: Both LNK415LG and LNK415EG are designed for lighting applications requiring AC DC offline switching with integrated PWM dimming control. The 1.24A output current and wide input voltage range support LED driver circuits across residential, commercial, and industrial lighting systems.