LNK460KG-TL Equivalent & Substitute Parts

Part Overview

The LNK460KG-TL is an LED Driver IC manufactured by Power Integrations, designed as a 1-output AC DC offline switcher with Triac dimming capability. This device operates at 1A output current and is packaged in a 12-ESOP format with an exposed pad. The LNK460KG-TL is classified as "Not For New Designs," indicating that alternative solutions should be evaluated for new applications. Identifying equivalent and substitute parts is necessary to ensure design flexibility, maintain supply chain continuity, and support legacy system maintenance.

Substiute Parts

LNK460KG-TL

Power IntegrationsIn Stock: 17944LNK460KG-TL Datasheet

Current PartRFQ

LT3799EMSE#PBF

Analog Devices Inc.In Stock: 1960LT3799EMSE#PBF Datasheet

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TPS92411PDBVR

Texas InstrumentsIn Stock: 3118TPS92411PDBVR Datasheet

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UCC25710DW

Texas InstrumentsIn Stock: 952UCC25710DW Datasheet

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UCC28810D

Texas InstrumentsIn Stock: 1919UCC28810D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LNK460KG-TL is determined by the following critical parameters:

Primary Substitution Criteria:

• Type: AC DC Offline Switcher (all substitutes match)
• Number of Outputs: 1 (all substitutes match)
• Dimming Capability: Triac dimming (LT3799EMSE#PBF and UCC28810D match; TPS92411PDBVR and UCC25710DW have different or unspecified dimming)
• Output Current: 1A nominal (UCC28810D provides 750mA; others unspecified)
• Voltage Supply Range: Maximum 50V (TPS92411PDBVR supports 7.5V-94V; UCC25710DW supports 11V-18V; UCC28810D supports up to 18V)
• Operating Temperature Range: -40°C ~ 150°C (LT3799EMSE#PBF and TPS92411PDBVR match upper limit; UCC25710DW and UCC28810D limited to 125°C and 105°C respectively)
• Package Type: Surface Mount (all substitutes are surface mount)
• RoHS Compliance: All substitutes are RoHS3 compliant

Substitution Groups:

Group 1 - Triac Dimming, High Temperature Match:

• LT3799EMSE#PBF (Analog Devices): Triac dimming, 16-MSOP-EP package, -40°C ~ 125°C, Active status
• UCC28810D (Texas Instruments): Triac dimming, 8-SOIC package, 750mA output, -40°C ~ 105°C, Active status

Group 2 - Alternative Topologies, Active Status:

• TPS92411PDBVR (Texas Instruments): Multiple topologies (Flyback, Buck, Boost), SOT-23-5 package, 7.5V-94V supply, -40°C ~ 150°C, Active status
• UCC25710DW (Texas Instruments): PWM dimming, 20-SOIC package, 11V-18V supply, -40°C ~ 125°C, Active status

Parameter Comparison

Engineering Selection Recommendations

For Direct Triac Dimming Replacement with Active Product Status:

LT3799EMSE#PBF (Analog Devices) and UCC28810D (Texas Instruments) are the primary candidates for direct functional replacement. Both devices support Triac dimming and are classified as Active products. LT3799EMSE#PBF maintains compatibility with the -40°C ~ 125°C operating range and offers ROHS3 compliance with MSL 1 rating. UCC28810D provides Triac dimming in a compact 8-SOIC package but operates at 750mA output current and is limited to -40°C ~ 105°C.

For Applications Requiring Extended Temperature Range:

TPS92411PDBVR (Texas Instruments) supports the full -40°C ~ 150°C operating temperature range matching the LNK460KG-TL. This device offers multiple topology options (Flyback, Buck, Boost) and operates across a wide supply voltage range (7.5V-94V). However, dimming capability is not specified in the provided parameters.

For PWM Dimming Applications:

UCC25710DW (Texas Instruments) provides PWM dimming capability as an alternative to Triac dimming. This device is suitable for backlight and lighting applications with a 11V-18V supply range and operates at -40°C ~ 125°C.

Compliance and Certification:

All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the LNK460KG-TL. All substitutes carry ECCN EAR99 and HTSUS 8542.39.0001 classifications. Moisture sensitivity levels for all substitutes are MSL 1 (Unlimited), providing superior handling characteristics compared to the LNK460KG-TL (MSL 3, 168 Hours).

Frequently Asked Questions (FAQ)

Q1: Can LT3799EMSE#PBF directly replace LNK460KG-TL in existing designs?

LT3799EMSE#PBF shares the same functional category (AC DC Offline Switcher with Triac dimming) and supports the same operating temperature range (-40°C ~ 125°C). However, the package differs (16-TFSOP vs. 12-BESOP), requiring PCB layout modifications. Output current specifications are not provided for the LT3799EMSE#PBF, necessitating verification against application requirements.

Q2: What is the primary difference between Triac and PWM dimming in these LED driver ICs?

Triac dimming (LNK460KG-TL, LT3799EMSE#PBF, UCC28810D) is used for phase-cut dimming control compatible with standard wall dimmers. PWM dimming (UCC25710DW) uses pulse-width modulation for brightness control and requires different circuit implementation. Selection depends on the dimming interface required by the application.

Q3: Why does UCC28810D have lower output current (750mA) compared to LNK460KG-TL (1A)?

UCC28810D is designed for different application requirements and topology flexibility (Flyback, SEPIC, Buck, Boost). The 750mA rating reflects the device's design specifications. Applications requiring 1A output should verify that UCC28810D meets current requirements or select alternative substitutes.

Q4: What are the package implications for substitution?

LNK460KG-TL uses 12-BESOP (0.350", 8.89mm width) with 11 leads. Substitutes use different packages: LT3799EMSE#PBF (16-TFSOP), UCC28810D (8-SOIC), TPS92411PDBVR (SOT-23-5), and UCC25710DW (20-SOIC). Package changes require complete PCB redesign and cannot be performed as direct pin-compatible substitutions.

Q5: Are all substitute parts suitable for new designs?

Yes. All substitute parts carry Active product status, indicating they are supported for new designs. The LNK460KG-TL is marked "Not For New Designs," making these substitutes appropriate for new applications requiring equivalent functionality.

Q6: What is the significance of MSL (Moisture Sensitivity Level) differences?

LNK460KG-TL has MSL 3 (168 Hours), requiring controlled storage and handling. All substitutes have MSL 1 (Unlimited), eliminating moisture sensitivity concerns and reducing storage/handling costs. This represents an improvement in manufacturing and logistics efficiency.

Q7: How do supply voltage ranges affect substitution suitability?

LNK460KG-TL supports up to 50V maximum supply. UCC25710DW and UCC28810D are limited to 18V maximum, restricting their use to lower-voltage applications. TPS92411PDBVR supports 7.5V-94V, providing the widest range. Application supply voltage must fall within the substitute's specified range.

Q8: Can TPS92411PDBVR be used as a Triac dimming replacement?

TPS92411PDBVR supports multiple topologies (Flyback, Buck, Boost) but dimming capability is not specified in the provided parameters. While it matches the -40°C ~ 150°C temperature range, its suitability for Triac dimming applications cannot be confirmed from available data.