My Inquiry
My Account
Texas Instruments TLC5928PWP
- Part No.:
- TLC5928PWP
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC5928PWP.pdf
- Description:
- IC LED DRVR LINEAR 35MA 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,843
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC5928PWP from Texas Instruments is a 16-channel constant-current LED sink driver in HTSSOP-24 PowerPAD™ package, delivering up to 35 mA per channel with ±1% channel-to-channel current accuracy, 35-MHz serial data rate, and integrated LED open detection (LOD) and pre-thermal warning (PTW). It operates from 3.0 V to 5.5 V supply and supports LED power-supply voltages up to 17 V, used in high-reliability LED video displays and message boards.
For engineers reviewing the TLC5928PWP datasheet, TLC5928PWP pinout, TLC5928PWP application, or TLC5928PWP equivalent, key selection considerations include its 20-ns BLANK pulse width, 10-ns output switching transient time, IREF-based current programming, daisy-chainable serial interface, and thermal-aware error reporting via SOUT.
Technical Context
The TLC5928PWP implements a 16-bit serial shift register followed by a parallel latch for on/off control of all 16 constant-current sinks. Its LOD circuit monitors each OUTn voltage during active sinking (VOUTn ≤ 0.30 V triggers detection), while PTW activates at junction temperature ≥ +138 °C (typ).
Current regulation relies on an external resistor (RIREF) tied between IREF and GND, generating a 1.20 V (typ) reference to set sink current from 2 mA to 35 mA. All outputs switch synchronously under LAT and BLANK control, minimizing on-time error to ±8 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 5.5 V - compatible with standard logic-level microcontrollers and industrial 3.3 V/5 V systems |
| Output Current | Up to 35 mA per channel - sufficient to drive high-brightness LEDs without external amplification |
| Channel Accuracy | ±1% channel-to-channel - ensures uniform LED brightness across all 16 outputs |
| Data Rate | 35 MHz SCLK - enables fast refresh rates for high-resolution LED panels (e.g., >1 kHz frame rates) |
| BLANK Pulse Width | 20 ns minimum - supports precise PWM dimming with minimal dead-time impact on duty cycle fidelity |
| LOD Threshold | 0.30 V (typ) at OUTn - detects open or GND-shorted LEDs while maintaining robust noise margin |
| Junction Temp Limit | +138 °C (typ) PTW activation - provides early thermal warning before derating or failure occurs |
Pinout & Package
HTSSOP-24 PowerPAD™ package with exposed thermal pad (bottom side, not internally connected to GND; must be soldered to PCB GND plane for thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (LAT) | Latch input | Rising edge transfers shift register data to output latch; also loads LOD/PTW status into shift register |
| 2–17 (OUT0–OUT15) | Constant-current sink outputs | Each independently controlled; support up to 17 V LED supply; require external current-setting resistor via IREF |
| 18 (BLANK) | Global output enable | High = all outputs forced OFF; low = outputs follow latch data; rising edge latches LOD/PTW status |
| 19 (SOUT) | Serial data output | Shifts out LOD/PTW status bits or daisy-chained data; synchronized to SCLK rising edge |
| 20 (IREF) | Current reference node | Connects to external resistor to GND; sets all 16 channels' sink current via internal 1.20 V reference |
| 21 (VCC) | Logic supply | 3.0–5.5 V digital core supply; powers shift register, latch, and error detection circuits |
| 22 (GND) | Power ground | Reference for all analog/digital functions; must be low-impedance path to minimize switching noise |
| 23 (SIN) | Serial data input | LSB-first data stream for on/off control; sampled on SCLK rising edge |
| 24 (SCLK) | Serial clock input | 35 MHz max; drives shift register and SOUT timing; Schmitt-triggered for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel constant-current sink | Enables direct driving of 16 independent LEDs without external current-setting components per channel |
| Integrated LED open detection (LOD) | Detects open-circuit or GND-short failures per channel during operation, reducing system-level diagnostic overhead |
| Pre-thermal warning (PTW) | Signals junction overtemperature (>+138°C) before thermal shutdown, allowing graceful duty-cycle reduction |
| Daisy-chainable serial interface | Single SIN/SCLK pair controls multiple TLC5928PWP devices, minimizing MCU GPIO usage and PCB routing |
| 20-ns BLANK pulse width | Supports ultra-fine PWM dimming resolution (e.g., 16-bit at 200 Hz) without blanking-induced timing distortion |
| HTSSOP-24 PowerPAD™ | Thermal pad improves power dissipation (3611 mW at TA < 25°C), enabling sustained 35 mA/channel operation |
Applications
| LED Video Displays | Message Boards |
|---|---|
Use Scenario: High-resolution indoor/outdoor full-color LED panels requiring uniform brightness and fault resilience. IC Role / Device Role / Timing Role: Constant-current sink driver with per-channel on/off control and real-time LOD feedback for pixel-level reliability monitoring. Use Value: ±1% channel matching ensures consistent color balance; 35-MHz data rate supports >1000 Hz refresh for flicker-free imaging. |
Use Scenario: Public information signage with long operational uptime and remote maintenance capability. IC Role / Device Role / Timing Role: Serially controlled LED driver with integrated PTW and LOD reporting for predictive failure alerts. Use Value: Early thermal warning allows dynamic brightness scaling; LOD detection identifies failed segments before total display degradation. |
| Illumination Systems | Industrial Control Panels |
Use Scenario: Architectural and task lighting where LED string consistency and thermal management are critical. IC Role / Device Role / Timing Role: Precision current source with programmable sink strength and thermal-aware operation. Use Value: RIREF-based current tuning enables calibrated light output; 17 V output voltage headroom supports multi-LED series strings. |
Use Scenario: Factory HMIs and operator interfaces requiring high-visibility indicators with built-in diagnostics. IC Role / Device Role / Timing Role: Status indicator driver with error-reporting capability via SOUT for centralized health monitoring. Use Value: Single-wire status readback reduces wiring complexity; BLANK-synchronized LOD/PTW capture simplifies firmware polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5940PWPR | 16-channel, but includes dot-correction (6-bit per channel) and grayscale PWM (12-bit); no LOD/PTW; requires external VREF | Better suited for grayscale-accurate displays; lacks built-in fault detection | Select when precise intensity calibration outweighs need for open-circuit/thermal diagnostics |
| MAX7219CWG+ | 8-digit/64-LED multiplexed driver; internal scan controller; no constant-current per output; no LOD/PTW | Optimized for 7-segment/LED matrix displays; lower pin count, no per-LED current tuning | Select for numeric/alphanumeric displays where multiplexing efficiency matters more than per-LED fault isolation |
Compared with TLC5928PWP, TLC5940PWPR offers superior grayscale control but omits hardware-level LED diagnostics, while MAX7219CWG+ reduces system complexity for fixed-format displays but sacrifices per-channel current precision and fault visibility.
Availability
TLC5928PWP is available at Aetrix Electronics and suitable for LED video displays, message boards, and industrial illumination systems requiring stable component supply, thermal-aware operation, and daisy-chain scalability.
Supply support for TLC5928PWP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of experience in high-reliability industrial and automotive IC design.
The TLC5928 product line delivers integrated LED driver solutions with built-in diagnostics for applications demanding both visual fidelity and system-level fault resilience-particularly in outdoor signage and industrial HMI.
FAQ
What is the maximum LED supply voltage supported by the TLC5928PWP?
The TLC5928PWP supports LED power-supply voltages up to +17 V at its OUT0–OUT15 pins. This allows driving longer series-connected LED strings without external boost circuitry. The device itself operates from a separate 3.0 V to 5.5 V VCC supply, isolating logic and LED power domains. Always observe absolute maximum ratings: OUTn voltage must not exceed +18 V.
How does the TLC5928PWP implement LED open detection (LOD)?
The TLC5928PWP monitors each OUTn pin voltage while the corresponding channel is actively sinking current. If VOUTn drops to ≤ 0.30 V (typ), the LOD circuit flags that channel as open or shorted to GND. This status is captured at the rising edge of BLANK and shifted out via SOUT. Valid detection requires ≥1 ms ON-time per channel to ensure stable measurement.
Can the TLC5928PWP be daisy-chained, and how is data routed?
Yes, the TLC5928PWP supports daisy-chaining: SOUT of one device connects to SIN of the next. Data is shifted LSB-first using a common SCLK; LAT latches all devices simultaneously. Each device consumes 16 bits of the serial stream. The final SOUT returns status data (LOD/PTW) from the last device in the chain, enabling bidirectional communication over three wires.
What thermal management is required for the TLC5928PWP in HTSSOP-24 PowerPAD™ package?
The TLC5928PWP's HTSSOP-24 PowerPAD™ package requires the exposed thermal pad to be soldered to a PCB copper area connected to GND. With 2 oz. copper, it achieves 28.9 mW/°C thermal resistance, enabling 3611 mW power dissipation at TA < 25°C. Without proper pad connection, thermal performance degrades significantly-junction temperature may exceed safe limits even at moderate load.
How is output current programmed on the TLC5928PWP?
Output current is set by an external resistor (RIREF) between the IREF pin and GND. The internal 1.20 V (typ) reference generates sink current per channel: IOUT = 42 × (1.20 V / RIREF). For 35 mA, RIREF = 1.44 kΩ (typ). Values range from 2 mA (RIREF = 25.2 kΩ) to 35 mA (RIREF = 1.44 kΩ), with line/load regulation within ±1%/V and ±3%/V respectively.
TLC5928PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 35mA
- Frequency:
- 35MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-HTSSOP
TLC5928PWP FAQ
1.How can I place an order for TLC5928PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5928PWP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLC5928PWP reliable?
The price and inventory of TLC5928PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5928PWP is usually 5 days.
3.What payment methods are accepted for TLC5928PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5928PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5928PWP?
TLC5928PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5928PWP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLC5928PWP?
For technical support, including TLC5928PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5928PWP requirements.
6.How does Aetrix verify that TLC5928PWP is sourced from the original manufacturer or authorized distributors?
All TLC5928PWP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLC5928PWP meets industry standards.
7.What is the process for return or replacement of TLC5928PWP?
All TLC5928PWP units undergo pre-shipment inspection (PSI). If there is an issue with TLC5928PWP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLC5928PWP part is unused and in its original packaging.
Return procedure for TLC5928PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5928PWP Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
