TLC5973D LED Driver IC Equivalent & Substitute Parts

Part Overview

The TLC5973D is an active, production-status LED driver IC manufactured by Texas Instruments, designed for linear shift register applications with 3 independent outputs. This device is classified as a Power Management (PMIC) component and is widely used in LED control and dimming applications requiring precise current management at 50mA per channel. The TLC5973D remains in active production with robust inventory availability (3990 pcs in stock). Substitute parts are identified when equivalent electrical and mechanical specifications allow direct functional replacement while maintaining system performance and compliance requirements.

Substiute Parts

TLC5973D

Texas InstrumentsIn Stock: 4014TLC5973D Datasheet

Current PartRFQ

TLC59731D

Texas InstrumentsIn Stock: 23109TLC59731D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC5973D are identified based on strict equivalence across the following critical parameters:

• Topology & Architecture: Shift Register topology with linear driver configuration
• Output Configuration: 3 independent outputs
• Current Rating: 50mA per channel
• Supply Voltage Range: 3V to 6V input
• Output Voltage: 21V
• Package Type: 8-SOIC form factor with identical 0.154" (3.90mm) width
• Thermal Range: -40°C to 85°C operating temperature
• Compliance: ROHS3 Compliant, MSL Level 1, REACH Unaffected

The TLC59731D qualifies as a parametric equivalent based on matching all critical electrical and mechanical specifications. Frequency variation (12MHz vs. 6MHz) does not disqualify substitution when system timing requirements permit operation at the lower frequency specification.

Parameter Comparison

Engineering Selection Recommendations

Both the TLC5973D and TLC59731D are active production components manufactured by Texas Instruments with identical ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Selection between these parts should be based on:

1. Frequency Requirements: The TLC5973D operates at 12MHz while the TLC59731D operates at 6MHz. Applications requiring higher shift register clock speeds should specify the TLC5973D. Applications with timing flexibility may utilize the TLC59731D.

2. Inventory Availability: The TLC59731D maintains significantly higher stock levels (23050 pcs vs. 3990 pcs), making it preferable for high-volume procurement or extended lead-time mitigation.

3. Regulatory Compliance: Both parts meet identical compliance requirements and are suitable for applications requiring ROHS3 certification and REACH compliance.

4. Thermal Performance: Both devices operate across the identical -40°C to 85°C temperature range, ensuring equivalent thermal performance in specified operating environments.

Frequently Asked Questions (FAQ)

Q: Can the TLC59731D directly replace the TLC5973D in existing designs?

A: Direct replacement is possible when system timing requirements permit operation at 6MHz. The TLC59731D maintains identical electrical specifications for supply voltage, output current, output voltage, package form factor, and thermal range. Frequency is the only parameter that differs. Designs with timing-critical applications requiring 12MHz operation must retain the TLC5973D.

Q: Are the package dimensions identical between TLC5973D and TLC59731D?

A: Yes. Both devices use the 8-SOIC package with 0.154" (3.90mm) width. PCB layouts, footprints, and mechanical mounting are identical, enabling direct board-level substitution without layout modification.

Q: What compliance certifications apply to both parts?

A: Both the TLC5973D and TLC59731D are ROHS3 compliant, carry MSL Level 1 (unlimited moisture sensitivity), and are REACH unaffected. Both parts are suitable for applications requiring these regulatory certifications.

Q: Why would I choose one part over the other if they are equivalent?

A: Selection depends on application-specific requirements. Choose TLC5973D for designs requiring 12MHz shift register operation. Choose TLC59731D for applications compatible with 6MHz operation, particularly when higher inventory availability or supply chain continuity is a priority.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both devices operate across -40°C to 85°C, maintain 50mA per-channel output current, support 3V to 6V supply voltage, and deliver 21V output voltage. Thermal and electrical performance are equivalent.