TPS92002D LED Driver IC Equivalent & Substitute Parts

Part Overview

The TPS92002D is a Texas Instruments LED Driver IC designed for AC DC offline switching applications with Flyback and Step-Down (Buck) topologies. It features Triac dimming capability and is optimized for lighting applications. The device is currently in Last Time Buy status, making equivalent and substitute parts identification essential for design continuity and long-term component sourcing strategy.

Substiute Parts

TPS92002D

Texas InstrumentsIn Stock: 1364TPS92002D Datasheet

Current PartRFQ

HV9801ALG-G

Microchip TechnologyIn Stock: 1150HV9801ALG-G Datasheet

MFR RecommendedRFQ

LNK404LG

Power IntegrationsIn Stock: 1455LNK404LG Datasheet

MFR RecommendedRFQ

LNK418EG

Power IntegrationsIn Stock: 16254LNK418EG Datasheet

MFR RecommendedRFQ

LT3799IMSE-1#TRPBF

Analog Devices Inc.In Stock: 5701LT3799IMSE-1#TRPBF Datasheet

MFR RecommendedRFQ

NCL30060BDR2G

onsemiIn Stock: 7627NCL30060BDR2G Datasheet

MFR RecommendedRFQ

TS19452CS RLG

Taiwan Semiconductor CorporationIn Stock: 900TS19452CS RLG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS92002D is determined by the following critical parameters:

• Type & Topology: AC DC Offline Switcher with Flyback and/or Step-Down (Buck) capability
• Dimming Method: Triac dimming compatibility
• Package: 8-SOIC surface mount form factor (primary consideration for PCB compatibility)
• Number of Outputs: Single output configuration
• Operating Temperature Range: Minimum -40°C to 85°C or higher
• Compliance: ROHS3 compliant, MSL 1 rating
• Applications: Lighting-specific LED driver functionality

Substitute parts are grouped into two categories based on dimming methodology and topology alignment:

Group 1 - Triac Dimming (Direct Functional Equivalents):

• LT3799IMSE-1#TRPBF (Analog Devices Inc.)
• LNK404LG (Power Integrations)
• NCL30060BDR2G (onsemi)

Group 2 - PWM Dimming (Alternative Topology):

• HV9801ALG-G (Microchip Technology)
• LNK418EG (Power Integrations)

Group 3 - Extended Compatibility (Buck Topology, Different Dimming):

• TS19452CS RLG (Taiwan Semiconductor Corporation)

Parameter Comparison

Engineering Selection Recommendations

For Direct Triac Dimming Replacement (Recommended Priority):

LT3799IMSE-1#TRPBF and LNK404LG are the primary candidates for direct functional replacement. Both maintain Triac dimming capability and AC DC offline switcher topology. LT3799IMSE-1#TRPBF offers extended frequency range (25kHz ~ 300kHz) and higher operating temperature (up to 125°C junction temperature). LNK404LG provides internal switching capability and operates at higher junction temperatures (up to 150°C), though it requires through-hole mounting consideration.

NCL30060BDR2G provides surface-mount compatibility with 8-SOIC packaging and maintains Flyback/Buck topology support. However, dimming method is not specified in available parameters.

For PWM Dimming Applications:

HV9801ALG-G and LNK418EG are suitable when PWM dimming replaces Triac dimming in system design. HV9801ALG-G maintains 8-SOIC surface-mount packaging with extended supply voltage range (15V ~ 450V). LNK418EG offers higher current output (2.39A) and internal switching with extended temperature range (up to 150°C junction temperature), though it requires through-hole mounting.

For Buck-Only Topology:

TS19452CS RLG supports Step-Down (Buck) topology exclusively with 100mA output current specification. Surface-mount 8-SOIC packaging matches the original device. MSL rating of 3 (168 Hours) requires moisture control during storage and handling.

Compliance & Availability:

All substitute parts maintain ROHS3 compliance or equivalent RoHS certification. All devices except TS19452CS RLG carry MSL 1 (Unlimited) rating, matching the original TPS92002D specification. Product status is Active for all substitutes, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can LT3799IMSE-1#TRPBF directly replace TPS92002D in existing PCB designs?

A: LT3799IMSE-1#TRPBF maintains Triac dimming and AC DC offline switcher functionality. However, package differs: LT3799IMSE-1#TRPBF uses 16-TFSOP with exposed pad versus TPS92002D's 8-SOIC. PCB layout modification is required. Electrical compatibility for Triac dimming is confirmed.

Q: What is the primary difference between Triac and PWM dimming substitutes?

A: Triac dimming (LT3799IMSE-1#TRPBF, LNK404LG, NCL30060BDR2G) integrates with phase-cut dimmer circuits common in legacy lighting systems. PWM dimming (HV9801ALG-G, LNK418EG) uses pulse-width modulation for brightness control, requiring different system-level integration. Dimming method selection depends on end-application requirements, not component interchangeability.

Q: Are LNK404LG and LNK418EG suitable for surface-mount assembly?

A: Both devices use through-hole eSIP package formats (eSIP-7F and eSIP-7C respectively), not surface-mount. They require different PCB assembly processes compared to TPS92002D's 8-SOIC surface-mount package. Select these only if through-hole assembly capability exists or is acceptable for redesign.

Q: Does TS19452CS RLG require special handling compared to TPS92002D?

A: TS19452CS RLG carries MSL 3 (168 Hours) rating versus TPS92002D's MSL 1 (Unlimited). This requires moisture control: storage in dry conditions, limited exposure time after package opening, and potential baking before reflow soldering. Standard MSL 1 devices (all other substitutes) have no moisture sensitivity restrictions.

Q: Which substitute offers the widest operating temperature range?

A: LNK418EG and LNK404LG both support -40°C to 150°C junction temperature, exceeding TPS92002D's -40°C to 85°C ambient temperature range. This provides thermal margin for high-temperature lighting applications. LT3799IMSE-1#TRPBF and HV9801ALG-G support -40°C to 125°C, also exceeding the original specification.

Q: Can multiple substitutes be used interchangeably within a single product line?

A: No. Each substitute requires distinct circuit design considerations based on topology (Flyback vs. Buck), dimming method (Triac vs. PWM), and package format (surface-mount vs. through-hole). Select one substitute per design revision to maintain consistency, testing, and certification requirements.