LNK460KG LED Driver IC Equivalent & Substitute Parts

Part Overview

The LNK460KG is an AC DC offline switcher LED driver IC manufactured by Power Integrations, designed for TRIAC dimming applications with 1A output capability. This device is classified as Obsolete in its product lifecycle. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity, production planning, and long-term supply chain management. Substitute parts must maintain compatibility with TRIAC dimming control, AC DC offline switching topology, and similar electrical operating parameters.

Substiute Parts

LNK460KG

Power IntegrationsIn Stock: 15469LNK460KG Datasheet

Current PartRFQ

AL1692S-13

Diodes IncorporatedIn Stock: 120128AL1692S-13 Datasheet

SimilarRFQ

HV9925SG-G

Microchip TechnologyIn Stock: 2036HV9925SG-G Datasheet

SimilarRFQ

MP4088GS

Monolithic Power Systems Inc.In Stock: 842MP4088GS Datasheet

SimilarRFQ

TPS92075DDCR/NOPB

Texas InstrumentsIn Stock: 1562TPS92075DDCR/NOPB Datasheet

SimilarRFQ

TPS92410DR

Texas InstrumentsIn Stock: 3634TPS92410DR Datasheet

SimilarRFQ

UCC25710DWR

Texas InstrumentsIn Stock: 29495UCC25710DWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LNK460KG are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Type: AC DC Offline Switcher (mandatory match)
• Dimming Control: TRIAC dimming capability (mandatory match)
• Number of Outputs: Single output (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• RoHS Compliance: ROHS3 or RoHS Compliant (regulatory requirement)

Secondary Compatibility Parameters:

• Voltage supply range compatibility with 50V maximum rating
• Current output capability (1A reference)
• Operating temperature range (-40°C minimum required)
• Package form factor (surface mount packages acceptable)

The substitute parts listed below satisfy the primary criteria. Variations in secondary parameters (such as exact voltage ranges, frequency, or package dimensions) reflect design flexibility within the AC DC offline switcher LED driver category while maintaining TRIAC dimming functionality.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (TRIAC Dimming, Highest Compatibility):

The following parts maintain TRIAC dimming functionality and AC DC offline switcher topology, making them the most direct substitutes:

• TPS92410DR (Texas Instruments): Supports both Analog and TRIAC dimming modes. Voltage supply range 9.5V–450V accommodates the LNK460KG's 50V maximum. Active product status with ROHS3 compliance ensures long-term availability and regulatory compliance.

• TPS92075DDCR/NOPB (Texas Instruments): TRIAC dimming AC DC offline switcher with 11V–18V supply range. Compact SOT-23-THIN package. Active status with ROHS3 compliance and unlimited moisture sensitivity rating.

• AL1692S-13 (Diodes Incorporated): TRIAC dimming AC DC offline switcher with Flyback, Buck, and Boost topology options. 8.5V–20V supply range. Active product with ROHS3 compliance and superior moisture sensitivity (MSL 1).

• MP4088GS (Monolithic Power Systems Inc.): TRIAC dimming AC DC offline switcher with Buck and Boost topology. 4.5V–5V supply range. Active status with ROHS3 compliance and -40°C to 125°C operating temperature.

Secondary Substitutes (PWM Dimming, Functional Alternative):

These parts provide AC DC offline switching with PWM dimming instead of TRIAC control. Selection requires circuit redesign for dimming control:

• UCC25710DWR (Texas Instruments): PWM dimming AC DC offline switcher. 11V–18V supply range. 20-SOIC package. Active status with ROHS3 compliance. Suitable for applications where PWM dimming replaces TRIAC control.

• HV9925SG-G (Microchip Technology): PWM dimming AC DC offline switcher with Step-Down topology. 20V–400V supply range. 8-SOIC package. Active status with ROHS3 compliance. Designed for lighting applications.

Compliance and Availability:

All substitute parts carry ROHS3 compliance or equivalent RoHS certification, meeting current regulatory requirements. All listed substitutes maintain Active product status, ensuring continued manufacturing support and supply chain availability. The LNK460KG's Obsolete status necessitates migration to one of these Active alternatives for new designs or production continuity.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LNK460KG with any of these substitute parts without circuit modification?

A: Direct replacement depends on dimming control requirements. Parts maintaining TRIAC dimming (TPS92410DR, TPS92075DDCR/NOPB, AL1692S-13, MP4088GS) are functionally equivalent for TRIAC dimming applications. Parts with PWM dimming (UCC25710DWR, HV9925SG-G) require circuit redesign to implement PWM control instead of TRIAC control. Package differences also require PCB layout adjustment.

Q2: What is the significance of the voltage supply range differences between LNK460KG (50V max) and substitute parts?

A: The LNK460KG specifies a 50V maximum supply voltage. Substitute parts with lower maximum ratings (such as AL1692S-13 at 20V or MP4088GS at 5V) are suitable only for applications operating within their specified ranges. Conversely, parts with higher maximum ratings (TPS92410DR at 450V, HV9925SG-G at 400V) provide greater design flexibility for higher-voltage applications while remaining compatible with lower-voltage designs.

Q3: Why do some substitute parts list PWM dimming instead of TRIAC dimming?

A: PWM (Pulse Width Modulation) and TRIAC dimming are distinct control methodologies. TRIAC dimming uses phase-cut control compatible with standard wall dimmers. PWM dimming uses frequency modulation for brightness control. Selection between these technologies depends on the end application's dimming interface requirements. TRIAC-compatible parts are preferred for consumer lighting applications using standard dimmers.

Q4: What does "Active" product status mean compared to "Obsolete"?

A: Active status indicates the manufacturer continues production and supports the part through its full lifecycle. Obsolete status indicates the manufacturer has discontinued production and support. All substitute parts listed carry Active status, ensuring continued availability, technical support, and supply chain reliability. Migration from the Obsolete LNK460KG to an Active substitute is recommended for long-term design sustainability.

Q5: Are package differences between LNK460KG (12-BESOP) and substitute parts (8-SOIC, SOT-23, 20-SOIC) significant?

A: Yes. Package differences require PCB layout redesign, including trace routing, pad placement, and thermal management considerations. The 12-BESOP package differs significantly from 8-SOIC, SOT-23, and 20-SOIC packages in pin count, spacing, and thermal characteristics. Mechanical compatibility with existing PCB designs cannot be assumed. New PCB design or layout modification is necessary for any package change.

Q6: How do I verify that a substitute part is compatible with my specific application?

A: Compatibility verification requires comparison of: (1) Dimming control type (TRIAC vs. PWM), (2) Voltage supply range overlap with your application, (3) Current output requirements, (4) Operating temperature range, (5) Package form factor and PCB layout constraints, (6) Frequency characteristics if critical to EMI performance. Consult the detailed datasheet for each candidate part and validate against your circuit design specifications.

Q7: What is the importance of RoHS and ROHS3 compliance for these parts?

A: RoHS (Restriction of Hazardous Substances) compliance is a regulatory requirement in many markets, restricting lead and other hazardous materials. ROHS3 represents the current standard. All substitute parts carry either RoHS Compliant or ROHS3 Compliant status, ensuring compliance with current environmental regulations. This is essential for products sold in regulated markets and for long-term supply chain sustainability.

Q8: Which substitute part offers the closest operating temperature range to LNK460KG (-40°C to 150°C)?

A: The LNK460KG specifies -40°C to 150°C (junction temperature). No substitute part exactly matches this range. MP4088GS and TPS92410DR both specify -40°C to 125°C (junction temperature), providing the closest match. HV9925SG-G specifies -40°C to 85°C (ambient temperature), which is more restrictive. Application requirements for high-temperature operation should guide selection among these options.