THL3514 LED Driver IC – Equivalent & Substitute Parts

Part Overview

The THL3514 is a 24-output LED driver power switch IC designed for high-current applications in backlight and signage systems. This device integrates power switching functionality with 40mA per-channel output capability in a 48-QFN package footprint. The THL3514 is classified as Obsolete product status, requiring identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

THL3514

THine Solutions, Inc.In Stock: 895THL3514 Datasheet

Current PartRFQ

THL3514-B

CELIn Stock: 823THL3514-B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the THL3514 is determined by matching the following critical electrical and mechanical parameters:

• Output Configuration: 24 independent power switch outputs
• Current Rating: 40mA per output channel
• Supply Voltage: 3V to 5.5V input range
• Output Voltage Capability: 35V
• Switching Frequency: 900kHz operation
• Package Footprint: 48-VFQFN Exposed Pad (7x7mm)
• Temperature Range: -40°C to +85°C operation
• Regulatory Compliance: ROHS3 and REACH requirements

Parts meeting all these parameters within the same package form factor are classified as direct parametric equivalents and approved substitutes.

Parameter Comparison

Engineering Selection Recommendations

The THL3514-B serves as the approved active substitute for the obsolete THL3514. Both parts maintain identical electrical specifications across all critical parameters, including output configuration, current ratings, voltage ranges, and switching frequency. Both devices meet ROHS3 and REACH compliance requirements and share the same MSL classification, ensuring equivalent handling and storage requirements in manufacturing environments.

The THL3514-B is recommended for new designs and ongoing production applications requiring 24-channel LED driver functionality in backlight and signage applications. Selection of the active substitute ensures supply chain continuity and access to current manufacturing and quality documentation.

Frequently Asked Questions (FAQ)

Q: Can the THL3514-B replace the THL3514 in existing designs? A: Yes. The THL3514-B is a parametric equivalent with identical electrical specifications, output configuration, and package footprint. Direct substitution is supported without design changes.

Q: Are there any differences in package handling between these parts? A: No. Both parts share identical MSL ratings (3, 168 Hours) and mounting type (Surface Mount), requiring the same moisture control and assembly procedures.

Q: Does the THL3514-B support the same operating temperature range? A: Yes. Both parts operate across -40°C to +85°C, maintaining performance across identical environmental specifications.

Q: Why is the original THL3514 classified as obsolete? A: The THL3514 is no longer in active production. The THL3514-B provides functional and electrical continuity for applications requiring 24-output LED driver functionality.

Q: Are regulatory certifications equivalent between both parts? A: Yes. Both the THL3514 and THL3514-B maintain ROHS3 compliance and REACH Unaffected status, meeting identical regulatory requirements for EU and global markets.