TLC5948PWPR LED Driver IC Equivalent & Substitute Parts

Part Overview

The TLC5948PWPR is a 16-output linear LED driver IC manufactured by Texas Instruments, designed for signage applications requiring constant current output control. This device features shift register topology with internal switching capability, operating across a 3V to 5.5V supply range and delivering 60mA per output channel.

The TLC5948PWPR is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC5948PWPR
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Number of Outputs	16
Type	Linear
Topology	Shift Register
Voltage Supply (Min)	3V
Voltage Supply (Max)	5.5V
Voltage Output	10V
Current Output per Channel	60mA
Package Type	24-PowerTSSOP (0.173", 4.40mm Width)
Operating Temperature	-40°C to 85°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TLC5948PWPR is determined by the following critical parameters:

Primary Compatibility Criteria:

16 output channels (fixed requirement)
Linear driver topology with shift register architecture
3V to 5.5V supply voltage range
Surface mount packaging (24-pin variants)
Internal switching capability

Secondary Compatibility Criteria:

Output current per channel (60mA nominal for TLC5948PWPR)
Maximum output voltage capability
Operating temperature range
RoHS3 compliance
Moisture sensitivity classification

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents — Parts maintaining identical or near-identical electrical specifications with the same package footprint, enabling direct board-level replacement.

Category 2: Functional Alternatives — Parts with compatible topology and pin count but differing output current ratings or package variants, requiring design verification for application-specific requirements.

Parameter Comparison

Part Number	Manufacturer	Outputs	Type	Supply Voltage (Min-Max)	Output Voltage	Current per Channel	Package	Operating Temp	Product Status	Inventory
TLC5948PWPR	Texas Instruments	16	Linear	3V - 5.5V	10V	60mA	24-PowerTSSOP	-40°C to 85°C	Obsolete	845 Pcs
TLC5948APWPR	Texas Instruments	16	Linear	3V - 5.5V	10V	60mA	24-PowerTSSOP	-40°C to 85°C	Active	4100 Pcs
ALED1642GWXTTR	STMicroelectronics	16	Linear	3V - 5.5V	19V	40mA	24-TSSOP-EP	-40°C to 150°C	Active	11486 Pcs
STAP16DPPS05XTTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	40mA	24-HTSSOP	-40°C to 125°C	Active	3319 Pcs
STAP16DPS05XTTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	100mA	24-TSSOP-EP	-40°C to 125°C	Active	3300 Pcs
STP16CPC05MTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	100mA	24-SOIC	-40°C to 125°C	Active	3300 Pcs
STP16CPPS05TTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	40mA	24-TSSOP	-40°C to 125°C	Active	17800 Pcs
STP16DP05MTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	100mA	24-SOIC	-40°C to 125°C	Active	10100 Pcs
STP16DP05TTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	100mA	24-TSSOP	-40°C to 125°C	Active	31107 Pcs
STP16DP05XTTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	100mA	24-TSSOP-EP	-40°C to 125°C	Active	33300 Pcs
STP16DPPS05XTTR	STMicroelectronics	16	Linear	3V - 5.5V	20V	40mA	24-TSSOP-EP	-40°C to 125°C	Active	1060 Pcs

Engineering Selection Recommendations

Recommended Primary Substitute: TLC5948APWPR

The TLC5948APWPR is the direct active equivalent to the obsolete TLC5948PWPR. Both parts share identical electrical specifications (16 outputs, 60mA per channel, 3V–5.5V supply, 10V output voltage) and identical package footprint (24-PowerTSSOP). The TLC5948APWPR maintains active product status with 4100 units in stock, ensuring supply continuity. Both parts are ROHS3 compliant with matching moisture sensitivity levels. This part requires no design modification and provides the highest compatibility for direct replacement.

Secondary Substitutes for Current-Rated Applications:

For applications where output current requirements differ from the original 60mA specification, the following STMicroelectronics parts provide functional alternatives:

STP16DP05XTTR (100mA per channel): Highest inventory availability (33300 units), 24-TSSOP-EP package with exposed pad for improved thermal performance, active status, ROHS3 compliant. Suitable for designs requiring higher current capability.
STP16DP05TTR (100mA per channel): 31107 units in stock, 24-TSSOP package (standard, no exposed pad), active status, ROHS3 compliant. Equivalent electrical performance to STP16DP05XTTR with standard package variant.
STP16CPPS05TTR (40mA per channel): 17800 units available, 24-TSSOP package, active status, ROHS3 compliant. Suitable for lower-current applications.

All recommended substitutes maintain the 3V–5.5V supply voltage range, 16-output shift register topology, and surface mount configuration. All parts are ROHS3 compliant and carry unlimited moisture sensitivity classification (MSL 1), providing superior reliability compared to the original part's MSL 2 rating.

Frequently Asked Questions (FAQ)

Q: Can TLC5948APWPR be used as a direct replacement for TLC5948PWPR without PCB modification?

A: Yes. The TLC5948APWPR is electrically and mechanically identical to the TLC5948PWPR. Both use the 24-PowerTSSOP package with identical pinout, supply voltage range (3V–5.5V), output current (60mA per channel), and operating temperature range (-40°C to 85°C). No PCB layout changes are required.

Q: What is the difference between 24-TSSOP and 24-PowerTSSOP packages?

A: Both are 24-pin thin shrink small outline packages with 0.173" width and 4.40mm body width. The PowerTSSOP variant includes enhanced power handling characteristics. For the TLC5948 series, the electrical performance remains equivalent; package selection depends on thermal requirements and PCB layout constraints.

Q: Can I substitute a 100mA part (STP16DP05XTTR) for the 60mA original (TLC5948PWPR)?

A: Electrical substitution is possible because the 100mA part can deliver the required 60mA per channel. However, design verification is necessary to confirm that the higher current capability does not introduce unintended effects in your specific application circuit. The STP16DP05XTTR operates at -40°C to 125°C, providing a wider temperature range than the original -40°C to 85°C specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts listed carry ROHS3 compliance certification, matching the original TLC5948PWPR specification.

Q: What is the significance of the exposed pad (EP) variant in package designations?

A: The exposed pad provides a thermal connection point to the PCB ground plane, improving heat dissipation. Parts designated as 24-TSSOP-EP (such as STP16DP05XTTR) include this feature. For applications with standard thermal requirements, non-EP variants (24-TSSOP) are functionally equivalent.

Q: Which substitute offers the best inventory availability?

A: STP16DP05XTTR provides the highest inventory level at 33300 units in stock. This part is suitable for applications requiring 100mA per channel output current and offers superior thermal performance through its exposed pad design.

Q: Do all substitutes maintain the same pinout as the original TLC5948PWPR?

A: All 16-output shift register LED driver ICs in the 24-pin TSSOP family maintain compatible pinout architecture. However, specific pin assignments may vary between manufacturers. Verify pinout compatibility in the respective device datasheets before implementation.

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