TLC59461PWP LED Driver IC Equivalent & Substitute Parts

Part Overview

The TLC59461PWP is a 16-output linear LED driver IC manufactured by Texas Instruments, designed for backlight and signage applications. This device features a shift register topology with internal switches, supporting 40mA per output channel across a 3V to 5.5V supply range in a 28-HTSSOP package. The main part number is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC59461PWP
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Type	Linear
Topology	Shift Register
Number of Outputs	16
Current - Output / Channel	40mA
Voltage - Supply (Min)	3V
Voltage - Supply (Max)	5.5V
Voltage - Output	17V
Frequency	30MHz
Package / Case	28-PowerTSSOP (0.173", 4.40mm Width)
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the TLC59461PWP is determined by the following critical parameters:

Number of Outputs: Must be 16 outputs
Topology: Must be Shift Register with internal switches
Supply Voltage Range: Must support 3V to 5.5V minimum
Output Current Capability: 40mA per channel (substitutes with equal or higher current ratings are acceptable)
Output Voltage: 17V or higher (substitutes with equal or higher ratings are acceptable)
Frequency: 30MHz or higher (substitutes with equal or higher ratings are acceptable)
Mounting Type: Surface Mount
Compliance: ROHS3 Compliant, REACH Unaffected

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Direct replacements with identical or superior electrical specifications, including TLC59461PWPR (same part, different packaging), MAX6969AUG+T, MAX6969AWG+, STP16CPC05MTR, and STP16DPP05TTR.

Parametric Equivalents: Parts with compatible core functionality but minor specification variations, including TLC5942PWPG4, TLC5943PWP, and TLC5946PWP.

Parameter Comparison

Part Number	Manufacturer	Outputs	Current/Channel (mA)	Supply Voltage (V)	Output Voltage (V)	Frequency (MHz)	Package	Temp Range (°C)	Status
TLC59461PWP	Texas Instruments	16	40	3-5.5	17	30	28-HTSSOP	-40 to 85	Last Time Buy
TLC59461PWPR	Texas Instruments	16	40	3-5.5	17	30	28-HTSSOP	-40 to 85	Active
MAX6969AUG+T	Analog Devices Inc./Maxim Integrated	16	55	3-5.5	5.5	—	24-TSSOP	-40 to 125	Active
MAX6969AWG+	Analog Devices Inc./Maxim Integrated	16	55	3-5.5	5.5	—	24-SOIC	-40 to 125	Active
STP16CPC05MTR	STMicroelectronics	16	100	3-5.5	20	30	24-SOIC	-40 to 125	Active
STP16DPP05TTR	STMicroelectronics	16	40	3-5.5	20	30	24-TSSOP	-40 to 125	Active
TLC5942PWPG4	Texas Instruments	16	50	3-5.5	17	30	28-HTSSOP	-40 to 85	Discontinued at DiGi Electronics
TLC5943PWP	Texas Instruments	16	50	3-5.5	17	30	28-HTSSOP	-40 to 85	Active
TLC5946PWP	Texas Instruments	16	40	3-5.5	17	30	28-HTSSOP	-40 to 85	Active

Engineering Selection Recommendations

Primary Recommendation: TLC59461PWPR is the direct equivalent, offering identical electrical specifications with Active product status. This part maintains the same 28-HTSSOP package and is the preferred choice for direct replacement in existing designs.

Texas Instruments Family Alternatives: TLC5943PWP and TLC5946PWP provide compatible alternatives within the Texas Instruments product line. Both maintain the 28-HTSSOP package, 3V-5.5V supply range, and 30MHz frequency. TLC5943PWP offers 50mA per channel (higher than the original 40mA), while TLC5946PWP matches the original 40mA specification exactly. Both are Active status parts suitable for new designs.

Cross-Manufacturer Substitutes: STP16DPP05TTR (STMicroelectronics) provides electrical compatibility with identical 40mA output current and 30MHz frequency, though in a 24-TSSOP package. This part offers extended temperature range (-40°C to 125°C) and Active status. STP16CPC05MTR offers higher current capability (100mA) and output voltage (20V) for applications requiring increased performance margin.

Maxim Integrated Options: MAX6969AUG+T and MAX6969AWG+ provide 16-output shift register topology with higher current capability (55mA) and extended temperature range. These parts are suitable for applications where higher current per channel or wider operating temperature is beneficial, though they feature different package options (24-TSSOP and 24-SOIC respectively) and lower output voltage specification (5.5V).

Compliance Verification: All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can TLC59461PWPR be used as a direct drop-in replacement for TLC59461PWP?

A: Yes. TLC59461PWPR is the same part with identical electrical specifications, topology, and package. The difference is packaging format (Tape & Reel versus Tube). Both are suitable for direct substitution in existing designs.

Q: What is the key difference between TLC5943PWP and TLC5946PWP?

A: Both parts share the same package (28-HTSSOP), supply voltage range (3V-5.5V), output voltage (17V), and frequency (30MHz). The primary difference is output current: TLC5943PWP provides 50mA per channel, while TLC5946PWP provides 40mA per channel (matching the original TLC59461PWP specification).

Q: Can I use MAX6969AUG+T or MAX6969AWG+ as substitutes?

A: These parts are functionally compatible as 16-output linear LED drivers with shift register topology. However, they feature different packages (24-TSSOP and 24-SOIC respectively), lower output voltage specification (5.5V versus 17V), and higher current capability (55mA). PCB layout modifications are required due to package differences.

Q: What are the package implications when switching from 28-HTSSOP to 24-TSSOP or 24-SOIC?

A: Package changes require PCB redesign. The 28-HTSSOP package has 28 pins with 0.173" width, while 24-TSSOP has 24 pins with the same width, and 24-SOIC has 24 pins with 0.295" width. Pin count and pitch differences necessitate new PCB layouts and schematic verification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original TLC59461PWP.

Q: Which substitute offers the best thermal performance?

A: STP16CPC05MTR and STP16DPP05TTR (STMicroelectronics) and MAX6969AUG+T and MAX6969AWG+ (Maxim Integrated) all support extended operating temperature range (-40°C to 125°C) compared to the original part (-40°C to 85°C).

Q: Can I use STP16CPC05MTR if my application requires higher current per channel?

A: Yes. STP16CPC05MTR provides 100mA per channel output current and 20V output voltage, both higher than the original 40mA and 17V specifications. This part is suitable for applications requiring increased current capacity. Package change from 28-HTSSOP to 24-SOIC requires PCB redesign.

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