TLC5940QRHBREP LED Driver IC Equivalent & Substitute Parts

Part Overview

The TLC5940QRHBREP is a 16-output linear LED driver IC manufactured by Texas Instruments, designed for applications requiring high-current LED control with shift register functionality. This active product operates across a 3V to 5.5V supply range and delivers 120mA per output channel, making it suitable for backlight and signage applications. The device is packaged in a 32-VQFN (5x5) surface mount configuration with an exposed pad.

Substitute parts become necessary when the primary part is unavailable, when alternative packaging formats are required for manufacturing constraints, or when different output current ratings better match specific application requirements.

Substiute Parts

TLC5940QRHBREP

Texas InstrumentsIn Stock: 65967TLC5940QRHBREP Datasheet

Current PartRFQ

MAX6969ANG+

Analog Devices Inc./Maxim IntegratedIn Stock: 649MAX6969ANG+ Datasheet

MFR RecommendedRFQ

STP16CPC05XTTR

STMicroelectronicsIn Stock: 1648STP16CPC05XTTR Datasheet

MFR RecommendedRFQ

STP16DP05TTR

STMicroelectronicsIn Stock: 31173STP16DP05TTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC5940QRHBREP is determined by the following core parameters:

• Number of Outputs: All substitutes must provide 16 output channels to maintain functional equivalence
• Topology: Shift register architecture is mandatory for control signal compatibility
• Internal Switches: All candidates must include integrated output switches
• Supply Voltage Range: 3V to 5.5V compatibility ensures direct power supply integration
• Operating Temperature Range: -40°C to 125°C maintains thermal specification alignment
• RoHS3 Compliance: All substitutes must meet ROHS3 requirements for regulatory consistency

The three qualified substitutes differ in packaging format, output current rating, and maximum output voltage, allowing selection based on specific application constraints rather than functional capability.

Parameter Comparison

Engineering Selection Recommendations

MAX6969ANG+ (Analog Devices Inc./Maxim Integrated)

This substitute provides through-hole mounting in 24-DIP packaging, suitable for breadboard prototyping and legacy PCB designs. Output current is rated at 55mA per channel, approximately 46% of the TLC5940QRHBREP rating. Maximum output voltage is limited to 5.5V. MSL rating of 1 (Unlimited) provides superior moisture tolerance compared to the primary part. Selection is appropriate when through-hole assembly is required and lower output current meets application demands.

STP16CPC05XTTR (STMicroelectronics)

This substitute maintains surface mount technology in 24-TSSOP-EP packaging with exposed pad. Output current is rated at 100mA per channel, approximately 83% of the TLC5940QRHBREP rating. Maximum output voltage reaches 20V, exceeding the primary part specification. Operating frequency matches at 30MHz. MSL rating of 1 (Unlimited) provides enhanced moisture tolerance. Selection is appropriate for compact surface mount designs where 100mA output current is sufficient and higher output voltage capability is beneficial.

STP16DP05TTR (STMicroelectronics)

This substitute provides surface mount technology in 24-TSSOP packaging without exposed pad. Output current is rated at 100mA per channel, approximately 83% of the TLC5940QRHBREP rating. Maximum output voltage reaches 20V. Operating frequency matches at 30MHz. MSL rating of 1 (Unlimited) provides enhanced moisture tolerance. Selection is appropriate for surface mount applications where 100mA output current is sufficient and the standard TSSOP package without exposed pad meets thermal requirements.

All three substitutes maintain active product status and ROHS3 compliance, ensuring regulatory consistency and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can MAX6969ANG+ replace TLC5940QRHBREP in all applications?

A: MAX6969ANG+ is functionally equivalent in topology and output count but differs in three critical parameters: mounting type (through-hole vs. surface mount), output current (55mA vs. 120mA), and output voltage (5.5V vs. 17V). Selection depends on whether the application can operate with reduced output current and lower maximum voltage, and whether through-hole mounting is compatible with the PCB design.

Q: What is the primary difference between STP16CPC05XTTR and STP16DP05TTR?

A: Both parts are manufactured by STMicroelectronics with identical electrical specifications (100mA output current, 20V maximum output voltage, 30MHz frequency). The primary difference is packaging: STP16CPC05XTTR includes an exposed pad in 24-TSSOP-EP configuration, while STP16DP05TTR uses standard 24-TSSOP without exposed pad. The exposed pad variant provides improved thermal dissipation for applications requiring enhanced heat management.

Q: Are all substitutes pin-compatible with TLC5940QRHBREP?

A: No. TLC5940QRHBREP uses 32-pin VQFN packaging, while MAX6969ANG+ uses 24-pin DIP, and both STMicroelectronics parts use 24-pin TSSOP. Pin count and pinout differ, requiring PCB redesign for any substitute implementation.

Q: Which substitute has the best moisture tolerance?

A: All three substitutes carry MSL rating of 1 (Unlimited), compared to the primary part's MSL rating of 2 (1 Year). This indicates superior moisture tolerance across all substitute options, with no time-based storage restrictions.

Q: Can I use STP16DP05TTR if my application requires 120mA output current?

A: No. STP16DP05TTR is rated for 100mA per channel maximum, which is approximately 17% below the TLC5940QRHBREP specification. If the application requires 120mA output current, only the primary part TLC5940QRHBREP meets this requirement among the listed options.

Q: What is the frequency specification difference between substitutes?

A: TLC5940QRHBREP, STP16CPC05XTTR, and STP16DP05TTR all operate at 30MHz. MAX6969ANG+ does not specify a frequency parameter, indicating this specification is not published for that device. If 30MHz operation is critical to the application, the STMicroelectronics substitutes or primary part are appropriate selections.