My Inquiry
My Account
Texas Instruments TLC59283DBQ
- Part No.:
- TLC59283DBQ
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
TLC59283DBQ.pdf
- Description:
- IC LED DRIVER LINEAR 45MA 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC59283DBQ from Texas Instruments is a 16-channel constant-current LED sink driver with pre-charge FET, CMOS-level serial interface (SIN/SCLK/LAT/BLANK), and grouped switching delay for EMI reduction. It delivers up to 45mA per channel (VCC > 3.6V), supports LED supply up to 10V, operates from –40°C to +85°C, and is used in multiplexed video displays to suppress ghosting.
For engineers reviewing the TLC59283DBQ datasheet, TLC59283DBQ pinout, TLC59283DBQ application, or TLC59283DBQ equivalent, key selection criteria include channel-to-channel current accuracy (±3% max), BLANK pulse width (50ns min), pre-charge FET functionality, daisy-chain capability via SOUT/SIN, and QSOP-24 thermal performance (θJA = 91.5°C/W).
Technical Context
The TLC59283DBQ implements a 16-bit shift register cascaded to an output latch, with LAT-triggered data transfer and BLANK-synchronized global output blanking. Its constant-current sink outputs are set by a single external resistor at IREF, enabling precise per-device current calibration across VCC = 3V–5.5V.
Each OUT0–OUT15 includes an integrated pre-charge FET that pulls the output node to VCC during BLANK high, actively discharging parasitic capacitance to eliminate ghosting in dynamic LED matrix scanning. Grouped switching (nine groups with ~1ns inter-group delay) limits simultaneous di/dt and reduces conducted EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - compatible with both 3.3V and 5V logic systems without level shifting |
| Max Output Current | 45mA per channel (VCC > 3.6V) - enables driving high-brightness LEDs at full scan duty cycles |
| LED Supply Voltage | Up to 10V - supports multi-LED strings with forward voltage drops up to 9.7V |
| Channel Accuracy | ±3% max channel-to-channel - ensures uniform brightness across 16 LEDs without per-channel trimming |
| Data Rate | 35MHz SCLK - allows full 16-bit update in ≤457ns, supporting high-refresh-rate displays |
| BLANK Pulse Width | 50ns minimum - provides precise blanking control for sub-microsecond timing-critical display frames |
| Operating Temp | –40°C to +85°C - qualified for industrial and outdoor signage environments |
Pinout & Package
Package: QSOP-24 (DBQ), 3.9mm × 8.65mm body, 0.635mm pitch, exposed thermal pad (not internally connected to GND; must be externally tied to PCB ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for all internal circuits and output sink currents |
| 2 SIN | Serial data input | Schmitt-triggered CMOS input accepting 3.3V/5V logic; LSB-first shift register load |
| 3 SCLK | Serial clock input | Schmitt-triggered edge-sensitive clock; advances shift register on rising edge (max 35MHz) |
| 4 LAT | Latch enable | Level-triggered control; transfers 16-bit shift register contents to output latch while high |
| 5–20 OUT0–OUT15 | Constant-current sink outputs | 16 independent open-drain outputs; each sinks up to 45mA with ±3% matching |
| 21 BLANK | Global output disable | Schmitt-triggered active-high input; forces all outputs OFF and pre-charge FETs ON when high |
| 22 SOUT | Serial data output | MSB of shift register; enables daisy-chaining multiple TLC59283DBQ devices |
| 23 IREF | Current reference terminal | Analog node setting all 16 output currents via external resistor to GND (VIREF = 1.208V typ) |
| 24 VCC | Logic supply | Powers internal logic, shift register, and pre-charge FETs; also sets current range (≤3.6V → 35mA max) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pre-charge FET per channel | Reduces ghosting in multiplexed LED matrices by actively discharging OUTn parasitic capacitance before common-line switching |
| Grouped output switching | Nine independently delayed output groups (e.g., OUT0 alone; OUT1/OUT15 paired) limit peak di/dt and suppress EMI |
| Single-resistor current programming | One external RIREF sets identical sink current for all 16 channels (2–45mA range), simplifying BOM and layout |
| Daisy-chain serial interface | SOUT-to-SIN cascading supports unlimited channel expansion with one microcontroller SPI port and no additional GPIO |
| Wide VCC compatibility | Operates from 3V to 5.5V with automatic current range selection (35mA @ ≤3.6V, 45mA @ >3.6V) |
Applications
| Video Display Panels | Outdoor Message Boards |
|---|---|
|
Use Scenario: High-resolution indoor LED video wall using 1/8 scan multiplexing with 16×N pixel rows per driver IC. IC Role / Device Role / Timing Role: Constant-current sink driver providing synchronized PWM dimming and pre-charge blanking for flicker-free image rendering. Use Value: Eliminates ghosting artifacts during rapid row switching and maintains luminance uniformity across 16 channels with ±3% matching. |
Use Scenario: Large-format roadside message sign with 16×16 LED modules per segment, requiring robust operation in –40°C to +85°C ambient. IC Role / Device Role / Timing Role: LED current controller managing dynamic brightness scaling and thermal derating via external IREF resistor. Use Value: Enables reliable outdoor readability through guaranteed 45mA drive at 5V VCC and industrial temperature qualification. |
| Industrial HMI Displays | Architectural LED Lighting |
|
Use Scenario: Factory-floor human-machine interface with segmented LED indicators and status bars driven by microcontroller GPIO-constrained design. IC Role / Device Role / Timing Role: Serial-to-parallel LED driver reducing MCU pin count via daisy-chained SOUT/SIN interface. Use Value: Cuts required MCU pins from 16 to 4 (SIN/SCLK/LAT/BLANK) while maintaining independent per-LED on/off control. |
Use Scenario: Linear architectural lighting strip with 16 individually addressable RGBW segments, each powered by separate 10V LED rails. IC Role / Device Role / Timing Role: High-voltage constant-current sink enabling direct connection to 10V LED strings without external FETs. Use Value: Supports 10V LED supply headroom for long series strings (e.g., 3× white LEDs @ 3.2V VF) while maintaining thermal safety in QSOP-24 package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59284DBQ | Same pinout, 16-channel, but adds programmable grayscale PWM (16-bit) and higher current (60mA) - requires different IREF configuration and firmware support | Required for variable-intensity LED dimming; not drop-in for simple on/off control | Select TLC59284DBQ only if PWM-based brightness control is needed; retains same PCB layout but needs updated software |
| MAX7219CWG+ | 8-channel, SPI interface, integrated 400kHz oscillator, no pre-charge FET - uses internal current reference and lacks ghosting suppression | Targeted at 7-segment/matrix displays with lower channel count and simpler timing requirements | Choose MAX7219CWG+ for cost-sensitive 8-channel designs where ghosting is not critical and external clock generation is undesirable |
Compared with TLC59283DBQ, TLC59284DBQ offers higher current and grayscale control at the cost of added firmware complexity, while MAX7219CWG+ reduces system component count for smaller displays but sacrifices channel count, pre-charge functionality, and precision current matching.
Availability
TLC59283DBQ is available at Aetrix Electronics and suitable for video displays, outdoor message boards, and industrial HMI applications requiring stable component supply, long-term production continuity, and guaranteed industrial temperature performance.
Supply support for TLC59283DBQ 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 LED driver innovation.
The TLC59283DBQ belongs to TI's constant-current LED driver product line, engineered specifically for high-reliability, multiplexed LED display systems where ghosting elimination, EMI control, and tight current matching are critical.
FAQ
What is the maximum LED supply voltage supported by the TLC59283DBQ?
The TLC59283DBQ supports an LED power-supply voltage (VLED) up to 10V. This allows direct connection to multi-LED series strings - for example, three white LEDs with 3.2V forward voltage each - without requiring external high-side switches or boost circuitry. The 10V rating applies across the full operating temperature range and is specified in the Absolute Maximum Ratings table of the datasheet.
How does the pre-charge FET in the TLC59283DBQ reduce ghosting in multiplexed LED displays?
The pre-charge FET in the TLC59283DBQ actively pulls each OUTn pin to VCC during BLANK high, discharging parasitic capacitance between the output node and adjacent common lines. This prevents unintended current flow through off-state LEDs when switching common cathodes, directly eliminating ghost-lighting artifacts observed in dynamic scan architectures. The mechanism is validated in Figures 7-1 and 7-2 of the TLC59283DBQ datasheet.
Can multiple TLC59283DBQ devices be connected in series (daisy-chained)?
Yes, the TLC59283DBQ supports daisy-chaining via its SOUT (serial output) and SIN (serial input) pins. Data shifted into the first device's SIN propagates through SOUT to the next device's SIN, allowing a single microcontroller SPI interface to control dozens of TLC59283DBQ ICs. The 35MHz SCLK rating ensures minimal latency even across long chains, and LAT synchronization guarantees simultaneous output updates across all devices.
What is the role of the IREF pin on the TLC59283DBQ, and how is current set?
The IREF pin on the TLC59283DBQ is the reference terminal for setting all 16 output currents. A single external resistor (RIREF) connected between IREF and GND establishes the sink current using the internal 1.208V reference: IOUT ≈ 43.8 × (1.208V / RIREF). For example, a 1.51kΩ resistor yields ~35mA per channel at VCC ≤ 3.6V. This single-point calibration eliminates per-channel trimming and ensures matched performance.
Does the TLC59283DBQ require external components for basic operation?
Yes - the TLC59283DBQ requires at minimum an external resistor (RIREF) from IREF to GND to set output current, plus decoupling capacitors (0.1µF ceramic near VCC/GND). No external FETs, op-amps, or timing crystals are needed. The BLANK, LAT, SCLK, and SIN inputs accept standard CMOS logic levels, and the pre-charge FET and grouped switching are fully internal - making the TLC59283DBQ a self-contained solution for LED current control.
TLC59283DBQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm 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:
- 10V
- Current - Output / Channel:
- 45mA
- Frequency:
- 35MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TLC59283DBQ FAQ
1.How can I place an order for TLC59283DBQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59283DBQ 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 TLC59283DBQ reliable?
The price and inventory of TLC59283DBQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59283DBQ is usually 5 days.
3.What payment methods are accepted for TLC59283DBQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59283DBQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59283DBQ?
TLC59283DBQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59283DBQ 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 TLC59283DBQ?
For technical support, including TLC59283DBQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59283DBQ requirements.
6.How does Aetrix verify that TLC59283DBQ is sourced from the original manufacturer or authorized distributors?
All TLC59283DBQ 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 TLC59283DBQ meets industry standards.
7.What is the process for return or replacement of TLC59283DBQ?
All TLC59283DBQ units undergo pre-shipment inspection (PSI). If there is an issue with TLC59283DBQ, 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 TLC59283DBQ part is unused and in its original packaging.
Return procedure for TLC59283DBQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC59283DBQ 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…
