LNK414EG LED Driver IC Equivalent & Substitute Parts

Part Overview

The LNK414EG is an AC DC offline switcher LED driver IC manufactured by Power Integrations, part of the LinkSwitch®-PH series. This device integrates an internal switch and operates in flyback topology, delivering 1.02A output current with PWM dimming capability across a wide supply voltage range of 36V to 725V. The LNK414EG is classified as Active product status and is RoHS compliant with unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements necessitate alternative topologies, package formats, or electrical characteristics within acceptable operating parameters.

Substiute Parts

LNK414EG

Power IntegrationsIn Stock: 17116LNK414EG Datasheet

Current PartRFQ

LNK415EG

Power IntegrationsIn Stock: 16937LNK415EG Datasheet

Parametric EquivalentRFQ

LT3799EMSE#TRPBF

Analog Devices Inc.In Stock: 3688LT3799EMSE#TRPBF Datasheet

SimilarRFQ

NCL30082BDR2G

onsemiIn Stock: 2903NCL30082BDR2G Datasheet

SimilarRFQ

RT8458AGJ6

Richtek USA Inc.In Stock: 56124RT8458AGJ6 Datasheet

SimilarRFQ

TPS92075DDCR/NOPB

Texas InstrumentsIn Stock: 1562TPS92075DDCR/NOPB Datasheet

SimilarRFQ

TPS92314ADR/NOPB

Texas InstrumentsIn Stock: 2105TPS92314ADR/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the LNK414EG is based on the following critical parameters that define functional equivalence:

Primary Equivalence Criteria:

• Type: AC DC Offline Switcher
• Topology: Flyback
• Number of Outputs: 1
• Dimming Capability: PWM or compatible dimming method
• Applications: Lighting
• Supply Voltage Range: Compatibility with 36V to 725V input range
• Output Current: Minimum 1.02A capability
• Operating Temperature: Support for -40°C to 150°C junction temperature range

Parametric Equivalent Classification: Parts meeting all primary equivalence criteria with identical or superior electrical specifications and compatible packaging.

Similar Classification: Parts sharing AC DC offline switcher topology and single-output LED driver function but with variations in topology (Buck, Boost, or Triac dimming), supply voltage range, mounting type, or package format. These require design review for application-specific compatibility.

Parameter Comparison

Engineering Selection Recommendations

LNK415EG - Parametric Equivalent

The LNK415EG is a direct parametric equivalent to the LNK414EG. Both devices are manufactured by Power Integrations within the LinkSwitch®-PH series, share identical topology (Flyback), supply voltage range (36V to 725V), frequency (66kHz), PWM dimming capability, and through-hole eSIP-7C packaging. The LNK415EG delivers 1.24A output current compared to 1.02A for the LNK414EG, representing superior current capability. Both devices maintain Active product status, RoHS compliance, and unlimited moisture sensitivity rating. The LNK415EG is suitable for direct substitution where higher output current capacity is acceptable or beneficial.

LT3799EMSE#TRPBF - Similar Classification

The LT3799EMSE#TRPBF is an AC DC offline switcher with flyback topology and single output, manufactured by Analog Devices Inc. This device differs from the LNK414EG in the following aspects: it lacks an internal switch, employs Triac dimming instead of PWM, operates at 25kHz to 300kHz frequency range, uses surface mount 16-MSOP-EP packaging instead of through-hole eSIP-7C, and operates at maximum junction temperature of 125°C versus 150°C. Supply voltage specifications are not provided. This part is classified as similar and requires design review for application compatibility, particularly regarding dimming method and thermal operating range.

NCL30082BDR2G - Similar Classification

The NCL30082BDR2G is an AC DC offline switcher with flyback topology manufactured by onsemi. This device lacks an internal switch, supports both Analog and PWM dimming, operates at reduced supply voltage range (8.8V to 20V), uses surface mount 8-SOIC packaging, and carries Last Time Buy product status. The significantly lower supply voltage range and absence of internal switch make this part suitable only for applications with substantially different input voltage requirements. Moisture sensitivity level is 3 (168 Hours), requiring controlled storage conditions. This part is not recommended for direct substitution due to product status and voltage incompatibility.

RT8458AGJ6 - Similar Classification

The RT8458AGJ6 is an AC DC offline switcher manufactured by Richtek USA Inc. with Step-Down (Buck) topology, differing from the LNK414EG flyback topology. This device lacks an internal switch, supports only Analog dimming, operates at reduced supply voltage range (17V to 31V), uses surface mount TSOT-23-6 packaging, and operates at 47kHz frequency. The topology and voltage range differences require design evaluation. Moisture sensitivity level is 3 (168 Hours). This part is classified as similar and suitable only for applications with compatible input voltage and dimming requirements.

TPS92075DDCR/NOPB - Similar Classification

The TPS92075DDCR/NOPB is an AC DC offline switcher manufactured by Texas Instruments with Step-Down (Buck) and Step-Up (Boost) topology, differing from the LNK414EG flyback topology. This device lacks an internal switch, supports Triac dimming, operates at reduced supply voltage range (11V to 18V), and uses surface mount SOT-23-THIN packaging. The topology and voltage range differences require design evaluation. This part is classified as similar and suitable only for applications with compatible input voltage and Triac dimming requirements.

TPS92314ADR/NOPB - Similar Classification

The TPS92314ADR/NOPB is an AC DC offline switcher with flyback topology manufactured by Texas Instruments. This device lacks an internal switch, operates at reduced supply voltage range (13V to 35V), uses surface mount 8-SOIC packaging, and operates at 60kHz to 150kHz frequency range. Dimming capability is not specified. The absence of internal switch and reduced supply voltage range require design evaluation. This part is classified as similar and suitable for applications with compatible input voltage requirements and external switch implementation.

Frequently Asked Questions (FAQ)

Q1: Can the LNK415EG directly replace the LNK414EG without PCB modifications?

A: Yes. The LNK415EG is a parametric equivalent with identical eSIP-7C through-hole packaging, pin configuration, and electrical interface. Both devices operate within the same supply voltage range (36V to 725V), frequency (66kHz), and PWM dimming specification. The LNK415EG delivers 1.24A versus 1.02A output current, representing increased capability. No PCB modifications are required for substitution.

Q2: Why do the similar parts have different supply voltage ranges than the LNK414EG?

A: The LNK414EG is designed for high-voltage AC DC offline applications with supply range 36V to 725V, utilizing internal switch integration and flyback topology. Similar parts such as RT8458AGJ6 (17V to 31V) and TPS92075DDCR/NOPB (11V to 18V) are designed for lower-voltage applications and employ different topologies (Buck or Buck-Boost). These voltage range differences reflect fundamental design differences and application targeting, making direct substitution inappropriate without circuit redesign.

Q3: What is the significance of "Internal Switch(s): Yes" for the LNK414EG?

A: The LNK414EG integrates an internal power switch within the IC package, eliminating the need for external switching transistors. This integration reduces component count, PCB area, and design complexity. Most similar parts lack internal switches, requiring external switch implementation and additional circuit design. This is a critical functional difference affecting system architecture.

Q4: Can parts with Triac dimming replace the LNK414EG which uses PWM dimming?

A: No. PWM (Pulse Width Modulation) and Triac dimming are fundamentally different control methods. PWM dimming controls LED brightness by varying the duty cycle of a fixed-frequency signal. Triac dimming controls brightness by phase-angle modulation of the AC line voltage. These methods require different circuit implementations and are not interchangeable without complete redesign of the dimming control circuit.

Q5: Why is the NCL30082BDR2G marked as "Last Time Buy" product status?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this product. New production has ceased, and existing inventory is being depleted. This status makes the NCL30082BDR2G unsuitable for new designs or long-term production requirements. The LNK414EG and LNK415EG, both with Active status, are recommended for new applications.

Q6: What is the difference between junction temperature (TJ) and ambient temperature (TA) specifications?

A: Junction temperature (TJ) is the temperature at the semiconductor die itself, typically higher than ambient temperature due to internal power dissipation. Ambient temperature (TA) is the surrounding air temperature. The LNK414EG specifies -40°C to 150°C TJ, while NCL30082BDR2G specifies -40°C to 125°C TA. TJ specifications are more relevant for thermal design as they reflect actual device operating conditions.

Q7: How does Moisture Sensitivity Level (MSL) affect component handling?

A: MSL rating indicates maximum exposure time to moisture before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires storage in dry conditions and limits exposure to 168 hours at specified humidity before soldering. Parts with MSL 3 require controlled storage and handling procedures. The LNK414EG with MSL 1 offers superior handling flexibility compared to MSL 3 parts.

Q8: Can surface mount parts replace the through-hole LNK414EG?

A: No. The LNK414EG uses through-hole eSIP-7C packaging with formed leads for insertion into PCB holes. Surface mount parts require different PCB footprints, solder pads, and assembly processes. While electrical functionality may be equivalent, physical substitution requires complete PCB redesign. The LNK415EG maintains identical through-hole packaging for direct substitution.

Q9: What does "RoHS Compliant" and "ROHS3 Compliant" mean?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the product meets EU directive requirements restricting lead, cadmium, mercury, and other hazardous substances. ROHS3 is the current version of the directive. Both designations indicate environmental compliance. All listed parts meet RoHS requirements, making them suitable for applications with environmental compliance mandates.

Q10: Is the LNK414EG suitable for applications requiring operating temperatures above 125°C?

A: Yes. The LNK414EG operates at junction temperatures up to 150°C, exceeding the 125°C maximum of most similar parts. This extended temperature range makes the LNK414EG suitable for high-temperature lighting applications. Most substitute parts are limited to 125°C maximum junction temperature, making them unsuitable for applications requiring the full 150°C capability.