LC5202D LED Driver IC Equivalent & Substitute Parts

Part Overview

The LC5202D is an AC DC offline switcher LED driver IC manufactured by Sanken Electric USA Inc., designed for offline PWM dimming applications with a 400mA output capability. This part operates across a wide supply voltage range of 25V to 200V and features an integrated switch for step-down (buck) topology conversion. The LC5202D is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

LC5202D

Sanken Electric USA Inc.In Stock: 4196LC5202D Datasheet

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HV9921N8-G

Microchip TechnologyIn Stock: 10112HV9921N8-G Datasheet

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LNK419EG

Power IntegrationsIn Stock: 35989LNK419EG Datasheet

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TPS92411PDBVR

Texas InstrumentsIn Stock: 3118TPS92411PDBVR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC5202D requires matching the following critical parameters: AC DC offline switcher topology, single output configuration, PWM dimming capability, and internal integrated switch. The substitute parts listed below meet these core functional requirements but may differ in specific electrical ratings, package form factors, and mounting technologies.

The three identified substitute parts are grouped by their compatibility with the LC5202D's primary function:

• HV9921N8-G: AC DC offline switcher with triac dimming (alternative dimming method), reduced current output (20mA vs. 400mA), surface mount package
• LNK419EG: AC DC offline switcher with flyback topology (alternative to buck), PWM dimming, higher current output (3.26A), through-hole package
• TPS92411PDBVR: AC DC offline switcher supporting multiple topologies (flyback, buck, boost), surface mount package, active product status

Parameter Comparison

Engineering Selection Recommendations

HV9921N8-G is suitable for applications where triac dimming is acceptable and lower output current (20mA) meets system requirements. This part is active and ROHS3 compliant. The surface mount package requires PCB redesign from the through-hole LC5202D footprint. The maximum supply voltage of 400V exceeds the LC5202D specification.

LNK419EG provides the highest output current capability (3.26A) and maintains through-hole mounting compatibility with the LC5202D. The flyback topology differs from the LC5202D's buck topology but supports PWM dimming. This part is active, RoHS compliant, and operates at higher maximum temperatures (150°C junction temperature). The maximum supply voltage of 725V significantly exceeds the LC5202D's 200V rating.

TPS92411PDBVR offers multi-topology support (flyback, buck, boost) and is active with ROHS3 compliance. This part is surface mount, requiring PCB redesign. Specific current output and dimming method parameters are not provided in the datasheet specifications, requiring detailed review of the manufacturer's documentation before selection.

All three substitute parts are currently active products with modern compliance certifications, addressing the obsolescence status of the LC5202D.

Frequently Asked Questions (FAQ)

Q: Can the LC5202D be directly replaced with HV9921N8-G?

A: Direct replacement is not recommended without circuit redesign. While both are AC DC offline switchers with buck topology and single outputs, the HV9921N8-G uses triac dimming instead of PWM, has significantly lower output current (20mA vs. 400mA), and requires surface mount assembly versus through-hole mounting.

Q: What is the primary difference between the LC5202D and LNK419EG?

A: The LC5202D uses step-down (buck) topology, while the LNK419EG uses flyback topology. Both support PWM dimming and single outputs. The LNK419EG provides higher output current (3.26A) and maintains through-hole mounting. The LNK419EG's maximum supply voltage (725V) and operating temperature range (-40°C to 150°C) exceed the LC5202D specifications.

Q: Why does the TPS92411PDBVR list multiple topologies?

A: The TPS92411PDBVR is designed to support multiple converter topologies (flyback, buck, boost) through flexible circuit configuration. This flexibility allows a single IC to address various application requirements. Specific topology selection depends on circuit design and application needs.

Q: Are all substitute parts RoHS compliant?

A: Yes. The LC5202D is RoHS Compliant. HV9921N8-G and TPS92411PDBVR are ROHS3 Compliant. LNK419EG is RoHS Compliant. All parts meet current environmental compliance standards.

Q: What packaging considerations apply when substituting the LC5202D?

A: The LC5202D uses through-hole 8-DIP packaging. HV9921N8-G and TPS92411PDBVR require surface mount assembly (SOT-89-3 and SOT-23-5 respectively), necessitating PCB redesign. LNK419EG maintains through-hole mounting (eSIP-7C package) but with different pin configuration and lead spacing than the 8-DIP form factor.

Q: Which substitute part is most suitable for high-temperature applications?

A: Both LNK419EG and TPS92411PDBVR support operating temperatures up to 150°C (junction temperature), compared to the LC5202D's 105°C (ambient temperature). The LC5202D's ambient temperature rating is lower than the junction temperature ratings of the substitute parts, indicating different measurement methodologies.