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TLC5948PWP LED Driver IC Equivalent & Substitute Parts
Part Overview
The TLC5948PWP is a 16-output linear LED driver IC manufactured by Texas Instruments, designed for signage applications with 60mA per-channel output capability. The device operates across a 3V to 5.5V supply range and features shift register topology with internal switching capability. This part is currently classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TLC5948PWP |
| Category | Power Management (PMIC) |
| Number of Outputs | 16 |
| Output Current per Channel | 60mA |
| Supply Voltage Range | 3V to 5.5V |
| Output Voltage | 10V |
| Topology | Shift Register |
| Package Type | 24-PowerTSSOP (0.173", 4.40mm Width) |
| Operating Temperature | -40°C to 85°C (TA) |
| Product Status | Obsolete |
| RoHS Compliance | ROHS3 Compliant |
| MSL Rating | 2 (1 Year) |
Substitute Part Grouping Explanation
Substitution eligibility for the TLC5948PWP is determined by the following critical parameters:
Primary Matching Criteria:
- 16 output channels (fixed requirement)
- Shift register topology (fixed requirement)
- Supply voltage range compatibility (3V to 5.5V minimum overlap)
- Output current per channel (60mA nominal, with tolerance for lower ratings in specific applications)
- Surface mount package compatibility
- Internal switching capability
Secondary Considerations:
- Product status (active preferred over obsolete)
- Operating temperature range
- Output voltage capability
- Dimming functionality type
- Package form factor (TSSOP, SOIC, or HVQFN variants acceptable)
Substitute parts are grouped by their adherence to these parameters. Parts with identical electrical specifications but different packaging or active product status are classified as direct parametric equivalents. Parts with minor deviations in output current or operating temperature but matching core topology are classified as functional alternatives suitable for specific application contexts.
Parameter Comparison
| Part Number | Manufacturer | Outputs | Output Current (mA) | Supply Voltage (V) | Output Voltage (V) | Topology | Package | Temp Range (°C) | Status |
|---|---|---|---|---|---|---|---|---|---|
| TLC5948PWP | Texas Instruments | 16 | 60 | 3.0–5.5 | 10 | Shift Register | 24-PowerTSSOP | -40 to 85 | Obsolete |
| TLC5948APWP | Texas Instruments | 16 | 60 | 3.0–5.5 | 10 | Shift Register | 24-PowerTSSOP | -40 to 85 | Active |
| ALED1642GWXTTR | STMicroelectronics | 16 | 40 | 3.0–5.5 | 19 | Shift Register | 24-TSSOP-EP | -40 to 150 | Active |
| MAX6969AWG+T | Analog Devices Inc./Maxim Integrated | 16 | 55 | 3.0–5.5 | 5.5 | Shift Register | 24-SOIC | -40 to 125 | Active |
| MAX6979AUG+ | Analog Devices Inc./Maxim Integrated | 16 | 55 | 3.0–5.5 | 5.5 | Shift Register | 24-TSSOP | -40 to 125 | Active |
| PCA9685BS,118 | NXP USA Inc. | 16 | 25 | 2.3–5.5 | 5.5 | Linear | 28-HVQFN (6x6) | -40 to 85 | Active |
| STAP16DPPS05XTTR | STMicroelectronics | 16 | 40 | 3.0–5.5 | 20 | Shift Register | 24-HTSSOP | -40 to 125 | Active |
| STAP16DPS05XTTR | STMicroelectronics | 16 | 100 | 3.0–5.5 | 20 | Shift Register | 24-TSSOP-EP | -40 to 125 | Active |
| STP16CPS05MTR | STMicroelectronics | 16 | 100 | 3.0–5.5 | 20 | Shift Register | 24-SOIC | -40 to 125 | Active |
| STP16DP05TTR | STMicroelectronics | 16 | 100 | 3.0–5.5 | 20 | Shift Register | 24-TSSOP | -40 to 125 | Active |
| STP16DP05XTTR | STMicroelectronics | 16 | 100 | 3.0–5.5 | 20 | Shift Register | 24-TSSOP-EP | -40 to 125 | Active |
Engineering Selection Recommendations
Direct Parametric Equivalent (Recommended Primary Replacement):
TLC5948APWP is the direct active equivalent to TLC5948PWP. Both parts share identical electrical specifications (16 outputs, 60mA per channel, 3V–5.5V supply, 10V output voltage, shift register topology) and package form factor (24-PowerTSSOP). The primary difference is product status: TLC5948APWP is active with 2200 units in stock, while TLC5948PWP is obsolete. This part requires no design modification and provides full functional compatibility.
Secondary Active Alternatives (Application-Dependent Selection):
STMicroelectronics STP16 series parts (STP16DP05TTR, STP16DP05XTTR, STP16CPS05MTR, STAP16DPPS05XTTR, STAP16DPS05XTTR) maintain 16-output shift register topology with 3V–5.5V supply compatibility. These parts feature higher output current capability (40–100mA per channel) and extended operating temperature ranges (-40°C to 125°C). Selection depends on application current requirements and thermal environment. Parts with exposed pad variants (XTTR suffix) provide improved thermal dissipation for high-current applications.
Analog Devices MAX6969AWG+T and MAX6979AUG+ offer 16-output shift register architecture with 55mA per-channel output and active product status. MAX6969AWG+T uses 24-SOIC packaging; MAX6979AUG+ uses 24-TSSOP packaging. Both support -40°C to 125°C operating range. These parts are suitable for applications where the 60mA specification can be met with 55mA output.
NXP PCA9685BS,118 provides 16-output linear topology with PWM dimming and lower per-channel current (25mA). This part is appropriate only for applications with reduced current requirements and is not recommended as a direct replacement for 60mA-rated designs.
Compliance and Certification:
All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original TLC5948PWP certification profile. MSL ratings vary (1–3); verify moisture sensitivity requirements for your specific manufacturing and storage environment.
Frequently Asked Questions (FAQ)
Q: Can TLC5948APWP be used as a direct drop-in replacement for TLC5948PWP?
A: Yes. TLC5948APWP is electrically and mechanically identical to TLC5948PWP. Both use 24-PowerTSSOP packaging and share all electrical specifications. No design changes are required. The primary advantage is that TLC5948APWP is active with current inventory availability.
Q: What is the difference between 24-TSSOP and 24-PowerTSSOP packaging?
A: Both are 24-pin thin shrink small-outline packages with 0.173" width and 4.40mm body width. PowerTSSOP variants include an exposed thermal pad for improved heat dissipation. For applications requiring thermal management, PowerTSSOP or TSSOP-EP (exposed pad) variants are preferred.
Q: Can I use STP16DP05TTR (100mA per channel) in place of TLC5948PWP (60mA per channel)?
A: Yes, for applications where 60mA per-channel output is the design requirement. STP16DP05TTR provides higher current capability, so it will operate within specification. However, verify that your PCB layout, power supply, and thermal design accommodate the higher current rating. The 24-TSSOP package is compatible with TLC5948PWP footprints.
Q: What is the significance of the XTTR suffix on STMicroelectronics parts?
A: The XTTR suffix indicates tape and reel packaging with an exposed thermal pad (-EP variant). The exposed pad provides a direct thermal connection to the PCB, improving heat dissipation in high-current applications. This is beneficial for designs operating near maximum current ratings.
Q: Are there any temperature range limitations I should consider?
A: TLC5948PWP operates from -40°C to 85°C. Most active substitutes (STMicroelectronics, Analog Devices) extend to -40°C to 125°C, providing wider thermal margin. If your application operates above 85°C, select a substitute with extended temperature rating. NXP PCA9685BS,118 matches the -40°C to 85°C range of the original part.
Q: What output voltage differences exist among the substitute parts?
A: TLC5948PWP specifies 10V output voltage. STMicroelectronics STP16 and STAP16 series specify 20V output voltage capability. Analog Devices MAX6969 and MAX6979 specify 5.5V output voltage. These differences reflect the maximum voltage the output stage can sustain. Verify that your application's LED forward voltage and current requirements are compatible with the selected part's output voltage rating.
Q: Is the NXP PCA9685BS,118 a suitable replacement?
A: PCA9685BS,118 is not recommended as a direct replacement. While it provides 16 outputs and PWM dimming, the per-channel current is limited to 25mA (compared to 60mA for TLC5948PWP). This part is suitable only for applications with significantly lower current requirements. Additionally, it uses 28-HVQFN packaging, which is not footprint-compatible with the original 24-PowerTSSOP.
Q: What is the MSL (Moisture Sensitivity Level) rating, and why does it matter?
A: MSL indicates the maximum time a component can be stored in ambient conditions before requiring baking prior to reflow soldering. TLC5948PWP has MSL 2 (1 Year). Most substitutes have MSL 1 (Unlimited), which is advantageous for inventory management. Verify MSL requirements with your manufacturing process and storage conditions.
Q: Are all listed parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the original TLC5948PWP certification profile. This ensures compatibility with environmental and regulatory requirements.
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