TPS92518PWPR LED Driver Controller - Equivalent & Substitute Parts

Part Overview

The TPS92518PWPR is an active LED driver controller IC manufactured by Texas Instruments, designed for 2-output DC-DC step-down (buck) topology applications with analog and PWM dimming capabilities. This device operates across a 6.5V to 42V supply range and is housed in a 24-PowerTSSOP surface mount package. The part is ROHS3 compliant and currently in active production status with 2465 units in stock. Substitute parts are identified when design requirements necessitate alternative voltage ratings, output configurations, or packaging formats while maintaining core LED driver functionality.

Substiute Parts

TPS92518PWPR

Texas InstrumentsIn Stock: 2483TPS92518PWPR Datasheet

Current PartRFQ

TPS92518HVPWPT

Texas InstrumentsIn Stock: 3210TPS92518HVPWPT Datasheet

Parametric EquivalentRFQ

TPS92518PWPT

Texas InstrumentsIn Stock: 1447TPS92518PWPT Datasheet

Parametric EquivalentRFQ

FL7760AM6X

onsemiIn Stock: 41125FL7760AM6X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS92518PWPR are classified based on the following substitution criteria:

Parametric Equivalents maintain identical or compatible electrical and mechanical specifications:

• Same topology (Step-Down Buck)
• Same dimming capability (Analog, PWM)
• Same package format (24-PowerTSSOP)
• Same operating temperature range (-40°C ~ 125°C)
• Same frequency (2MHz)
• Same number of outputs (2)
• Voltage supply range compatibility (minimum 6.5V, maximum ≥42V)

Manufacturer Recommended Alternative provides functional substitution with design trade-offs:

• Different output configuration (1 output vs. 2 outputs)
• Different package format (SOT-23-6 vs. 24-PowerTSSOP)
• Different frequency (1MHz vs. 2MHz)
• Different voltage supply range (8V to 60V)
• Specified output voltage (4.5V ~ 5.5V)
• Specified output current (1.5A per channel)

Parameter Comparison

Engineering Selection Recommendations

TPS92518PWPT is a direct parametric equivalent suitable for applications requiring identical electrical performance and package format. Both devices share the same 42V maximum supply voltage, 2MHz switching frequency, 2-output configuration, and 24-PowerTSSOP package. Selection between TPS92518PWPR and TPS92518PWPT depends on inventory availability and procurement lead times, as both maintain ROHS3 compliance and identical thermal specifications.

TPS92518HVPWPT is a parametric equivalent with extended maximum supply voltage rating (65V vs. 42V). This variant is appropriate for applications requiring higher input voltage tolerance while maintaining all other electrical and mechanical characteristics. The 24-PowerTSSOP package and 2-output configuration remain identical. This part is suitable for designs operating at or near the upper voltage limits of the standard TPS92518PWPR.

FL7760AM6X is a manufacturer-recommended alternative from onsemi for applications where single-output LED driver functionality is acceptable. This part operates across an 8V to 60V supply range with a specified 4.5V to 5.5V output and 1.5A per-channel current rating. The SOT-23-6 package represents a significant size reduction compared to the 24-PowerTSSOP format. Selection of this alternative requires design modification to accommodate single-output operation and different package footprint. The 1MHz switching frequency differs from the 2MHz standard.

Frequently Asked Questions (FAQ)

Q: Can TPS92518PWPT replace TPS92518PWPR in existing designs? A: Yes. TPS92518PWPT is a direct parametric equivalent with identical supply voltage range (6.5V to 42V), output configuration (2 outputs), package format (24-PowerTSSOP), and switching frequency (2MHz). No design modifications are required.

Q: When should TPS92518HVPWPT be selected instead of TPS92518PWPR? A: TPS92518HVPWPT is selected when the application requires input voltage tolerance above 42V, up to 65V maximum. All other electrical and mechanical specifications remain identical. This variant is necessary for high-voltage LED driver applications.

Q: Is FL7760AM6X a direct replacement for TPS92518PWPR? A: No. FL7760AM6X is a manufacturer-recommended alternative with functional differences: single output instead of dual outputs, SOT-23-6 package instead of 24-PowerTSSOP, 1MHz switching frequency instead of 2MHz, and specified output voltage/current ratings. Design modifications are required for PCB layout and circuit topology.

Q: What are the package compatibility considerations? A: TPS92518PWPR, TPS92518PWPT, and TPS92518HVPWPT all use the 24-PowerTSSOP package with identical 0.173" width and 4.40mm dimensions, ensuring direct PCB footprint compatibility. FL7760AM6X uses SOT-23-6 package, requiring new PCB layout design.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (TPS92518PWPT, TPS92518HVPWPT, and FL7760AM6X) maintain ROHS3 compliance with MSL rating 3 (168 Hours), matching the original TPS92518PWPR specifications.

Q: What is the frequency difference impact between TPS92518PWPR and FL7760AM6X? A: TPS92518PWPR operates at 2MHz switching frequency while FL7760AM6X operates at 1MHz. This affects output filter design, EMI characteristics, and component selection. Applications designed for 2MHz operation require circuit redesign for 1MHz operation.