TLC5924DAPR Equivalent & Substitute Parts

Part Overview

The TLC5924DAPR is an active, production-status LED driver IC manufactured by Texas Instruments. This 16-output linear shift register device is designed for LED backlight applications requiring 80mA per-channel output capability. The device operates across a 3V to 5.5V supply range and integrates internal switching functionality for efficient power management in compact form factors.

Substitute parts become necessary when addressing specific application constraints such as packaging availability, thermal operating range requirements, output current specifications, or supply chain considerations while maintaining functional equivalence in LED driver topology and control interface.

Substiute Parts

TLC5924DAPR

Texas InstrumentsIn Stock: 1382TLC5924DAPR Datasheet

Current PartRFQ

STP16CP05MTR

STMicroelectronicsIn Stock: 2277STP16CP05MTR Datasheet

MFR RecommendedRFQ

STP16CPC05MTR

STMicroelectronicsIn Stock: 3347STP16CPC05MTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC5924DAPR is determined by the following critical parameters:

Core Functional Requirements:

• Topology: Shift Register architecture
• Number of Outputs: 16 channels
• Internal Switching: Required
• Supply Voltage Range: 3V to 5.5V compatibility
• Frequency: 30MHz operation

Acceptable Variation Parameters:

• Output Current per Channel: May exceed 80mA (higher current capability is compatible)
• Output Voltage: May exceed 15V (higher voltage rating is compatible)
• Operating Temperature Range: May exceed -40°C ~ 85°C (wider range is compatible)
• Package Type: Alternative surface-mount packages acceptable
• Moisture Sensitivity Level: Lower MSL values (1 vs. 3) indicate improved moisture resistance and are compatible

The substitute parts STP16CP05MTR and STP16CPC05MTR maintain identical shift register topology, 16-output configuration, and supply voltage specifications while offering enhanced output current (100mA vs. 80mA), extended temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C), and improved moisture handling characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and ROHS3 compliance, confirming long-term availability and environmental regulatory alignment.

TLC5924DAPR Selection Criteria:

• Original design specification with 80mA output current
• Narrower operating temperature range (-40°C ~ 85°C)
• 32-pin PowerTSSOP package for space-constrained layouts
• Standard moisture sensitivity (MSL 3)

STP16CP05MTR Selection Criteria:

• Enhanced output current (100mA per channel)
• Extended operating temperature range (-40°C ~ 125°C)
• 24-pin SOIC package with reduced pin count
• Superior moisture resistance (MSL 1)
• Cut Tape and Digi-Reel packaging options for flexible procurement

STP16CPC05MTR Selection Criteria:

• Identical electrical specifications to STP16CP05MTR
• Enhanced output current (100mA per channel)
• Extended operating temperature range (-40°C ~ 125°C)
• 24-pin SOIC package
• Superior moisture resistance (MSL 1)
• Tape & Reel packaging format

Frequently Asked Questions (FAQ)

Q: Can STP16CP05MTR or STP16CPC05MTR directly replace TLC5924DAPR in existing designs?

A: Functional replacement is supported due to identical shift register topology, 16-output configuration, and matching 3V to 5.5V supply voltage range. However, package geometry differs: TLC5924DAPR uses 32-pin PowerTSSOP while substitutes use 24-pin SOIC. PCB layout modification is required. The higher output current (100mA vs. 80mA) and extended temperature range of substitutes provide enhanced capability margins.

Q: What is the significance of the MSL rating difference?

A: MSL 3 (TLC5924DAPR) allows 168 hours of moisture exposure before reflow processing. MSL 1 (STP16CP05MTR, STP16CPC05MTR) permits unlimited moisture exposure. Lower MSL ratings indicate superior moisture resistance and reduce risk of moisture-induced failures during storage and assembly.

Q: Are there differences between STP16CP05MTR and STP16CPC05MTR?

A: Electrical specifications are identical. The primary distinction is packaging format: STP16CP05MTR is supplied in Cut Tape and Digi-Reel formats, while STP16CPC05MTR is supplied in Tape & Reel format. Selection depends on procurement and assembly line requirements.

Q: How does the package change affect circuit design?

A: The shift from 32-pin PowerTSSOP to 24-pin SOIC reduces pin count and alters footprint dimensions. PCB routing, thermal management considerations, and component placement must be re-evaluated. The 24-pin SOIC package is narrower (7.50mm vs. 6.10mm width) and may affect board layout density.

Q: What is the impact of the 100mA vs. 80mA output current difference?

A: Substitute parts provide 25% higher per-channel current capability. This allows driving brighter LEDs or supporting additional parallel LED strings without exceeding device ratings. Thermal dissipation increases proportionally; verify thermal design margins in high-current applications.

Q: Are all three parts suitable for the same temperature range applications?

A: TLC5924DAPR operates -40°C ~ 85°C. Substitutes operate -40°C ~ 125°C. Substitutes are suitable for all TLC5924DAPR applications and additionally support extended high-temperature environments. For applications below 85°C, all parts are equivalent.