TPS92001DR LED Driver IC Equivalent & Substitute Parts

Part Overview

The TPS92001DR is an AC DC offline switcher LED driver IC manufactured by Texas Instruments, designed for lighting applications with Triac dimming capability. This device operates in a Flyback and Step-Down (Buck) topology with a single output and 100kHz switching frequency. The part is currently in Last Time Buy status, indicating end-of-life production. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for lighting applications requiring offline AC DC conversion with Triac dimming control.

Substiute Parts

TPS92001DR

Texas InstrumentsIn Stock: 878TPS92001DR Datasheet

Current PartRFQ

HVLED805TR

STMicroelectronicsIn Stock: 27811HVLED805TR Datasheet

MFR RecommendedRFQ

LYT3314D-TL

Power IntegrationsIn Stock: 948LYT3314D-TL Datasheet

MFR RecommendedRFQ

MP4027GJ-Z

Monolithic Power Systems Inc.In Stock: 36443MP4027GJ-Z Datasheet

MFR RecommendedRFQ

RT8415GSP

Richtek USA Inc.In Stock: 6883RT8415GSP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS92001DR is determined by the following critical parameters:

Primary Substitution Criteria:

• AC DC Offline Switcher topology with single output configuration
• Triac dimming capability (mandatory for direct replacement)
• Surface mount packaging compatible with 8-SOIC or equivalent footprint
• Operating temperature range supporting -40°C minimum
• ROHS3 compliance and REACH unaffected status

Secondary Compatibility Factors:

• Supply voltage range encompassing the 21V maximum specification
• Flyback or compatible topology for offline AC DC conversion
• Internal switch configuration (may vary from main part)
• Frequency operation in the 40kHz to 124kHz range

The substitute parts listed below meet the core substitution criteria based on topology, dimming method, and environmental specifications. However, variations in package size, internal switch configuration, and operating temperature ranges exist and must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

LYT3314D-TL (Power Integrations) is the primary recommended substitute for Triac dimming applications. This part maintains Triac dimming capability, operates across an extended temperature range (-40°C ~ 150°C), and holds Active product status. The 16-SOIC package requires PCB layout modification from the original 8-SOIC footprint. This device supports multiple topologies including Flyback, SEPIC, Step-Down, and Step-Up configurations, providing design flexibility for offline AC DC conversion.

HVLED805TR (STMicroelectronics) is suitable for applications where PWM dimming is acceptable as an alternative to Triac dimming. This part features an internal switch, operates at -40°C ~ 150°C, and maintains Active product status with high inventory availability. The 16-SOIC package footprint differs from the original 8-SOIC specification.

MP4027GJ-Z (Monolithic Power Systems Inc.) serves as an alternative for compact designs requiring PWM dimming. This part utilizes a smaller SOT-23-8 package, operates at -40°C ~ 125°C, and maintains Active product status. The reduced package size may offer space advantages in constrained layouts but requires different PCB footprint design.

RT8415GSP (Richtek USA Inc.) is not recommended for new designs due to Obsolete product status. This part is included for reference only in applications where existing inventory must be managed or legacy designs require continuation.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original TPS92001DR specification.

Frequently Asked Questions (FAQ)

Q: Can HVLED805TR directly replace TPS92001DR in existing designs?

A: HVLED805TR is functionally compatible for AC DC offline switching applications but uses PWM dimming instead of Triac dimming. The 16-SOIC package requires PCB layout modification from the original 8-SOIC footprint. Electrical compatibility must be verified for your specific application requirements.

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

A: Triac dimming is used with AC line-voltage dimmer switches and maintains compatibility with standard wall-mounted dimmer controls. PWM dimming uses pulse-width modulation for brightness control and requires dedicated PWM control signals. Application requirements determine which dimming method is appropriate.

Q: Is LYT3314D-TL suitable for direct replacement of TPS92001DR?

A: LYT3314D-TL maintains Triac dimming capability and is functionally compatible for offline AC DC conversion. However, the 16-SOIC package differs from the original 8-SOIC specification, requiring PCB redesign. The extended operating temperature range (-40°C ~ 150°C) and Active product status make this the preferred Triac dimming substitute.

Q: Why does MP4027GJ-Z use a different package than the original TPS92001DR?

A: MP4027GJ-Z utilizes SOT-23-8 packaging, which is smaller than the 8-SOIC package of TPS92001DR. This package selection reflects the device's design for compact applications. PCB footprint redesign is required for implementation.

Q: What is the significance of "Last Time Buy" status for TPS92001DR?

A: Last Time Buy status indicates that Texas Instruments has discontinued production and will no longer accept new orders after a specified date. Existing inventory may be available, but long-term supply cannot be guaranteed. Transitioning to an Active substitute part ensures continued design support and future availability.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with environmental and hazardous substance restrictions applicable to the original TPS92001DR.

Q: Can RT8415GSP be used as a substitute despite Obsolete status?

A: RT8415GSP is listed for reference only. Obsolete product status indicates discontinued manufacturing and limited future availability. This part should not be selected for new designs. Use only if managing legacy product inventory or supporting existing designs with available stock.