My Inquiry
My Account
Texas Instruments TLC5926IDWR
- Part No.:
- TLC5926IDWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLC5926IDWR.pdf
- Description:
- IC LED DRVR LINEAR 120MA 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,913
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC5926IDWR from Texas Instruments is a 16-channel constant-current LED sink driver IC designed for LED display and lighting systems requiring precise current regulation, open-load fault detection, and serial daisy-chain control. It delivers 5–120 mA per channel with ±6% inter-channel and inter-device accuracy, operates from 3.0 V to 5.5 V supply, supports up to 30 MHz clock frequency, and drives LEDs at output voltages up to 17 V - enabling robust operation in outdoor signage and industrial panel displays.
For engineers reviewing the TLC5926IDWR datasheet, TLC5926IDWR pinout, TLC5926IDWR application, or TLC5926IDWR equivalent, key selection criteria include its 16-bit shift register + latch architecture, R-EXT–based current programming, dual-function LE(ED1)/OE(ED2) pins for error detection mode entry, and compatibility with cascaded LED driver topologies requiring real-time open-circuit monitoring.
Technical Context
The TLC5926IDWR integrates a 16-bit serial-in/parallel-out shift register, independent output latches, and 16 regulated current sinks with integrated open-load detection circuitry. Its error detection logic requires active output channels and reports faults via SDO during Special Mode - no external sense resistors or ADCs needed.
It supports two functional modes: Normal Mode (serial data loading and latched output control) and Special Mode (entered via OE(ED2) pulse + LE(ED1) level), where it either reads 16-bit error status codes or accepts an 8-bit configuration code for 256-step global current gain adjustment (1/12 to 127/128).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sink outputs (OUT0–OUT15) |
| Output current range | 5 mA to 120 mA per channel, set by single R-EXT resistor |
| Current accuracy | ±6% max between channels and between ICs (10–50 mA range) |
| Supply voltage | 3.0 V to 5.5 V logic supply; output stage supports up to 17 V load voltage |
| Max clock frequency | 30 MHz - enables high-speed serial updates for large LED arrays |
| Error detection | Open-load detection only (TLC5926 variant); no short-circuit detection |
| Operating temperature | –40°C to +125°C ambient; thermal shutdown at ~170°C junction |
Pinout & Package
Package: SOIC-24 (DW), body size 15.40 mm × 7.50 mm, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return for logic and current-sink paths; must be low-impedance |
| SDI (Pin 2) | Serial data input | Accepts 3.3 V/5 V CMOS-level data for shift register loading |
| CLK (Pin 3) | Clock input | Rising-edge triggered; minimum pulse width 20 ns; max 30 MHz |
| LE(ED1) (Pin 4) | Latch enable / Error detect control | Pulldown internal; high = shift data to latch; low + OE pulse enters Special Mode |
| OUT0–OUT15 (Pins 5–20) | Constant-current sink outputs | Each drives LED cathode; supports VF up to 17 V; no external current-setting components |
| R-EXT (Pin 23) | Current reference input | Connects external resistor to set all 16 output currents simultaneously |
| SDO (Pin 22) | Serial data output | Shifts out latched data (Normal Mode) or 16-bit error status (Special Mode) |
| VDD (Pin 24) | Logic supply | 3.0–5.5 V; powers internal logic, shift register, and control circuitry |
| OE(ED2) (Pin 21) | Output enable / Error detect trigger | Pullup internal; low = enable outputs; one-clock pulse initiates Special Mode entry |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel constant-current sink | Eliminates need for individual channel current-limiting resistors; reduces BOM count and board space |
| Open-load detection per channel | Reports failed LED opens without external sensing; enables system-level fault diagnostics |
| 256-step programmable global current gain | Compensates for inter-IC current variation (<1% skew correction) for uniform brightness in multi-driver LED panels |
| 30 MHz serial interface | Supports rapid refresh of >1000-LED arrays via daisy-chained drivers with minimal microcontroller overhead |
| Schmitt-trigger inputs | Ensures noise-immune CLK, SDI, LE(ED1), and OE(ED2) operation in electrically noisy industrial environments |
Applications
| LED Display Panels | Architectural LED Signage |
|---|---|
|
Use Scenario: Driving monochrome or RGB LED modules in indoor/outdoor video walls with pixel pitch ≤10 mm. IC Role / Device Role / Timing Role: Constant-current sink for each LED cathode; serially controlled via microcontroller SPI interface. Use Value: Ensures uniform luminance across thousands of LEDs using single R-EXT tuning and 256-step gain calibration. |
Use Scenario: Controlling segmented LED strips on building façades with remote monitoring requirements. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with open-load reporting via SDO during Special Mode polling cycles. Use Value: Enables automated identification of dead segments without manual visual inspection or external test fixtures. |
| Industrial Control Panels | White Goods Indicator Lighting |
|
Use Scenario: Backlighting status indicators and segmented bar graphs on HMI panels operating in wide-temperature environments. IC Role / Device Role / Timing Role: High-reliability current sink with thermal shutdown protection and –40°C to +125°C operation. Use Value: Maintains consistent LED intensity despite ambient temperature swings and prevents thermal runaway in enclosed enclosures. |
Use Scenario: Power-efficient indicator lighting for refrigerators, dishwashers, and washing machines with long-life requirements. IC Role / Device Role / Timing Role: Low-quiescent-current LED driver (11–25 mA IDD) supporting 3.3 V or 5 V MCU interfaces. Use Value: Reduces standby power consumption while delivering stable 5–120 mA drive for high-brightness appliance LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5927IDWR | Includes short-circuit detection (TLC5926 lacks this); otherwise identical pinout, timing, and current specs | Required where LED string short-fault monitoring is mandatory (e.g., automotive interior lighting) | Select TLC5927IDWR only if short-circuit detection is needed; TLC5926IDWR remains optimal for cost-sensitive open-load-only use cases |
| MAX7219CWG+ | 8-channel, multiplexed LED driver with built-in BCD decode; no open-load detection; 5 V only; SPI interface | Targeted at 7-segment/8x8 matrix displays, not linear LED strings or high-voltage signage | Choose MAX7219CWG+ for compact numeric displays; avoid for 16-channel constant-current linear LED arrays requiring fault reporting |
Compared with TLC5927IDWR, the TLC5926IDWR omits short-circuit detection but retains identical open-load reporting, current accuracy, and daisy-chain capability - making it the lower-cost choice for signage and panel applications where only open-circuit faults must be monitored. Versus MAX7219CWG+, TLC5926IDWR offers double the channel count, higher output voltage tolerance, and true constant-current sinking without multiplexing artifacts.
Availability
TLC5926IDWR is available at Aetrix Electronics and suitable for LED display panels, architectural signage, and industrial control systems requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for TLC5926IDWR 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 connectivity technologies with over 50 years of innovation in power management and signal chain solutions.
The TLC5926IDWR belongs to TI's LED driver product line, engineered specifically for high-reliability, constant-current LED array control in commercial and industrial lighting - emphasizing fault diagnostics, thermal resilience, and scalable serial architecture.
FAQ
What is the maximum output voltage supported by the TLC5926IDWR?
The TLC5926IDWR supports up to 17 V at its OUT0–OUT15 pins, allowing direct connection to high-forward-voltage LED strings (e.g., white or blue LEDs in series) without external voltage translation. This rating is independent of the 3.0–5.5 V VDD supply and enables flexible LED topology design in signage and backlighting applications using the TLC5926IDWR.
Does the TLC5926IDWR support short-circuit detection?
No, the TLC5926IDWR does not support short-circuit detection. That feature is exclusive to the TLC5927IDWR variant. The TLC5926IDWR provides open-load detection only - it identifies when an LED is disconnected or open, but cannot detect when an output is shorted to VLED or GND. System designers requiring both fault types must select TLC5927IDWR instead of TLC5926IDWR.
How is output current programmed on the TLC5926IDWR?
Output current on the TLC5926IDWR is set globally using a single external resistor (R-EXT) connected to Pin 23. The value determines all 16 channels' current identically, ranging from 5 mA to 120 mA. Additionally, an 8-bit configuration code can be loaded in Special Mode to apply fine-grained 256-step gain scaling (1/12 to 127/128), enabling precise inter-IC current matching for the TLC5926IDWR in multi-driver systems.
Can multiple TLC5926IDWR devices be daisy-chained?
Yes, the TLC5926IDWR supports seamless daisy-chaining via its SDI and SDO pins. Serial data shifts in through SDI, propagates through the 16-bit shift register, and exits via SDO to the next device's SDI. This allows driving hundreds of LEDs with a single microcontroller SPI interface - a core capability confirmed in the TLC5926IDWR datasheet for scalable LED array control.
What package type is used for the TLC5926IDWR part number?
The TLC5926IDWR uses the SOIC-24 (DW) package: 24-pin small-outline integrated circuit with 15.40 mm × 7.50 mm body dimensions, gull-wing leads, and RoHS-compliant finish. This package is optimized for automated PCB assembly and provides adequate thermal dissipation for typical LED driver loads when mounted on standard 4-layer boards - as specified for the TLC5926IDWR in TI's official documentation.
TLC5926IDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- -
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 120mA
- Frequency:
- 30MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
TLC5926IDWR FAQ
1.How can I place an order for TLC5926IDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5926IDWR 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 TLC5926IDWR reliable?
The price and inventory of TLC5926IDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5926IDWR is usually 5 days.
3.What payment methods are accepted for TLC5926IDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5926IDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5926IDWR?
TLC5926IDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5926IDWR 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 TLC5926IDWR?
For technical support, including TLC5926IDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5926IDWR requirements.
6.How does Aetrix verify that TLC5926IDWR is sourced from the original manufacturer or authorized distributors?
All TLC5926IDWR 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 TLC5926IDWR meets industry standards.
7.What is the process for return or replacement of TLC5926IDWR?
All TLC5926IDWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC5926IDWR, 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 TLC5926IDWR part is unused and in its original packaging.
Return procedure for TLC5926IDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5926IDWR 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…
