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Texas Instruments TLC59025IDBQR
- Part No.:
- TLC59025IDBQR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
TLC59025IDBQR.pdf
- Description:
- IC LED DRIVER LINEAR 45MA 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,664
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Product details
Overview
TLC59025IDBQR from Texas Instruments is a 16-channel constant-current LED sink driver IC used in LED display and lighting systems to provide uniform, adjustable current (3–45 mA per channel) across wide forward voltage variations, with ±5% channel-to-channel matching and 30-MHz serial data clock support for high-speed LED panel refresh.
For engineers reviewing the TLC59025IDBQR datasheet, TLC59025IDBQR pinout, TLC59025IDBQR application, or TLC59025IDBQR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated SSOP-24 pin functions, application-specific implementation insights, and two confirmed alternative parts with functional trade-offs.
Technical Context
The TLC59025IDBQR integrates a 16-bit shift register and parallel output latches to convert serial SDI data into synchronized 16-channel current-sink outputs. Its internal current regulation uses an external REXT resistor to set all channels simultaneously, maintaining <±5% matching across channels and <±6% matching between ICs over –40°C to +125°C.
It operates from 3.0 V to 5.5 V supply, supports up to 17 V output voltage headroom, and features Schmitt-trigger inputs, thermal shutdown at 150–200°C, and OE-controlled blanking with 100 ns minimum enable/disable response. Timing compliance includes 30 MHz cascade-capable clocking and sub-10 ns setup/hold margins on LE and SDI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sink outputs for driving LEDs in parallel arrays |
| Output current range | 3 mA to 45 mA per channel, set precisely via external REXT (e.g., 13 mA @ 1440 Ω, 26 mA @ 720 Ω) |
| Current accuracy | ±5% max channel-to-channel mismatch ensures uniform LED brightness across displays |
| Supply voltage | 3.0 V to 5.5 V - compatible with standard logic-level microcontrollers and industrial 3.3 V/5 V rails |
| Max output voltage | 17 V - supports high-VF LED strings (e.g., white/blue LEDs in series) without external boost |
| Clock frequency | 30 MHz - enables fast serial loading of full 16-bit frame in ≤533 ns, critical for flicker-free video-rate LED updates |
| Thermal protection | Overtemperature shutdown at 150–200°C with 15°C hysteresis - prevents latch-up or parametric drift during sustained load |
Pinout & Package
Package: SSOP-24 (DBQ), 8.65 mm × 3.90 mm body, RoHS-compliant NIPDAU finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for logic control and all 16 output currents - requires low-impedance PCB plane connection |
| SDI (Pin 2) | Serial data input | Accepts 3.0–5.5 V logic-level data stream; shifted into internal 16-bit register on CLK rising edge |
| CLK (Pin 3) | Clock input | Drives synchronous data shift; 30 MHz max rate enables rapid LED state updates without timing bottlenecks |
| LE (Pin 4) | Latch enable | Transfers shift register contents to output latches on falling edge; internal pulldown ensures default low state |
| OUT0–OUT15 (Pins 5–20) | Constant-current sinks | 16 independent open-drain outputs capable of sinking up to 45 mA each at up to 17 V compliance |
| OE (Pin 21) | Output enable | Active-low global blanking control; internal pullup ensures safe OFF state at power-up |
| SDO (Pin 22) | Serial data output | Chained output for daisy-linking multiple TLC59025IDBQR devices - eliminates need for additional MCU GPIOs |
| R-EXT (Pin 23) | Current-setting input | Connects to external resistor to GND; sets all 16 channels identically using IOUT = (1.21 V / REXT) × 15.5 |
| VDD (Pin 24) | Power supply | 3.0–5.5 V supply for logic and output drivers; decoupling capacitor required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel constant-current sink | Eliminates need for individual current-limiting resistors - reduces BOM count and PCB area in multi-LED systems |
| External REXT-based current tuning | Enables precise, temperature-stable LED brightness control across production batches without trimming |
| 30-MHz serial interface | Supports >18 kframes/s update rate for 16-bit LED states - essential for high-refresh-rate signage and gaming displays |
| Schmitt-trigger inputs | Provides noise immunity on CLK, LE, OE, and SDI lines in electrically noisy environments like industrial LED cabinets |
| Thermal shutdown with hysteresis | Prevents thermal runaway during overcurrent or poor heatsinking while enabling automatic recovery after cooldown |
| Daisy-chain SDO output | Allows cascading unlimited TLC59025IDBQR devices with single MCU SPI line - scales LED count without added pins |
Applications
| Gaming Machine LED Panels | Architectural LED Signage |
|---|---|
|
Use Scenario: High-brightness, full-color LED matrix panels in casino slot machines requiring flicker-free animation and consistent color balance. IC Role / Device Role / Timing Role: Constant-current sink driver providing synchronized 16-channel PWM-ready outputs controlled by host MCU via 30-MHz serial interface. Use Value: ±5% channel matching ensures uniform luminance across RGB subpixels; 17 V output headroom supports stacked white LED strings without external DC-DC. |
Use Scenario: Outdoor digital billboards using large-area LED modules where long cable runs and ambient temperature swings challenge current stability. IC Role / Device Role / Timing Role: Primary LED current regulator with thermal shutdown and daisy-chain capability for modular panel expansion. Use Value: REXT-based current setting maintains brightness consistency across modules despite VF drift; 125°C operating range sustains performance in sun-exposed enclosures. |
| White Goods Indicator Displays | Industrial Control Panel Lighting |
|
Use Scenario: Appliance front-panel status indicators (e.g., washing machine cycle lights) requiring long life, low power, and ESD robustness. IC Role / Device Role / Timing Role: Low-power LED driver with integrated logic-level compatibility and 1-kV HBM ESD rating for consumer-grade reliability. Use Value: 3–45 mA adjustable range accommodates diverse LED types (red/green/yellow); 3.0 V min supply enables direct use with battery-backed MCU rails. |
Use Scenario: Factory HMIs with segmented LED bar graphs and warning lights exposed to vibration, dust, and voltage transients. IC Role / Device Role / Timing Role: Robust current sink with Schmitt-trigger inputs and thermal protection for unattended operation in harsh environments. Use Value: OE-blanking enables fail-safe LED shutdown during fault conditions; ±6% die-to-die matching allows interchangeability across replacement units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59116RTWR | 16-channel I²C interface (vs. SPI), integrated PWM dimming, lower max current (25 mA), smaller QFN-24 package | Better suited for space-constrained, low-noise embedded systems needing software-configurable dimming | Select when I²C bus integration and per-channel PWM outweigh need for 30-MHz speed or 45 mA drive |
| MAX7219CWG+ | 8-channel, SPI interface, built-in BCD decode/digit scan, higher VOUT (36 V), but no REXT current tuning | Targeted at 7-segment/matrix displays with multiplexed scanning; lacks analog current adjustability | Choose for legacy numeric display designs requiring digit-level control, not for general-purpose LED current regulation |
Compared with TLC59025IDBQR, TLC59116RTWR trades raw speed and current headroom for protocol flexibility and integration, while MAX7219CWG+ offers higher voltage tolerance and decoding logic at the cost of channel count and analog current precision.
Availability
TLC59025IDBQR is available at Aetrix Electronics and suitable for LED display systems, architectural signage, and industrial control panel lighting requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for TLC59025IDBQR 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 TLC59025IDBQR belongs to TI's LED driver product line, engineered specifically for high-channel-count, constant-current LED applications demanding precision brightness control, thermal resilience, and scalable serial interfacing.
FAQ
What is the maximum output voltage compliance of the TLC59025IDBQR?
The TLC59025IDBQR supports up to 17 V at its OUT0–OUT15 terminals, enabling direct drive of multi-LED series strings (e.g., 5× white LEDs at 3.2 V VF) without external boost circuitry. This specification is validated across the full operating temperature range (–40°C to +125°C) and remains stable under varying load conditions per the device's constant-current regulation architecture.
How does the external REXT resistor set the output current in the TLC59025IDBQR?
The TLC59025IDBQR uses the formula IOUT = (1.21 V / REXT) × 15.5 to determine per-channel current, where REXT connects between Pin 23 (R-EXT) and GND. For example, a 720 Ω resistor yields ~26 mA, and 1440 Ω yields ~13 mA. This relationship holds across the full 3–45 mA range and is specified in TI's SLVS934C datasheet Section 9.2.2.1.
Does the TLC59025IDBQR support daisy-chaining with other LED drivers?
Yes, the TLC59025IDBQR supports seamless daisy-chaining via its SDO (Pin 22) output, which relays shifted data to the SDI of the next device. This allows cascading multiple TLC59025IDBQR ICs using a single serial data line from the host controller, reducing GPIO usage and simplifying layout for large LED arrays - a feature confirmed in the Functional Block Diagram and Truth Table of the official datasheet.
What is the thermal shutdown behavior of the TLC59025IDBQR?
The TLC59025IDBQR activates thermal shutdown between 150°C and 200°C (typical 175°C), disabling all outputs until junction temperature falls below the hysteresis threshold (~15°C lower). This behavior is implemented in silicon and verified per Section 6.5 of the SLVS934C datasheet; it protects against permanent damage during sustained overload or inadequate heatsinking without requiring external circuitry.
Can the TLC59025IDBQR operate from a 3.3 V supply?
Yes, the TLC59025IDBQR is fully specified to operate from 3.0 V to 5.5 V, including standard 3.3 V logic rails. All electrical characteristics - including 30 MHz clock operation, ±5% current matching, and Schmitt-trigger input thresholds - are guaranteed across this range per Section 6.3 (Recommended Operating Conditions) of the TI datasheet. No level-shifting is required for 3.3 V MCU interfaces.
TLC59025IDBQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 45mA
- Frequency:
- 30MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TLC59025IDBQR FAQ
1.How can I place an order for TLC59025IDBQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59025IDBQR 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 TLC59025IDBQR reliable?
The price and inventory of TLC59025IDBQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59025IDBQR is usually 5 days.
3.What payment methods are accepted for TLC59025IDBQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59025IDBQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59025IDBQR?
TLC59025IDBQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59025IDBQR 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 TLC59025IDBQR?
For technical support, including TLC59025IDBQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59025IDBQR requirements.
6.How does Aetrix verify that TLC59025IDBQR is sourced from the original manufacturer or authorized distributors?
All TLC59025IDBQR 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 TLC59025IDBQR meets industry standards.
7.What is the process for return or replacement of TLC59025IDBQR?
All TLC59025IDBQR units undergo pre-shipment inspection (PSI). If there is an issue with TLC59025IDBQR, 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 TLC59025IDBQR part is unused and in its original packaging.
Return procedure for TLC59025IDBQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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