My Inquiry
My Account
Texas Instruments TLC69608QRTWRQ1
- Part No.:
- TLC69608QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69608QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 128 MINI-LED MATRIX L
- Quantity:
- Payment:
- Shipping:
Inventory:4,228
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC69608QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED backlight driver with 16 constant-current sinks, 30mA/20V output capability, ±2% channel-to-channel current matching, and time-multiplexed local dimming control for LCD displays. It operates from 3V to 5.5V and supports daisy-chained configurations up to 1024 devices for >32,000 dimming zones in central infotainment displays.
For engineers reviewing the TLC69608QRTWRQ1 datasheet, TLC69608QRTWRQ1 pinout, TLC69608QRTWRQ1 application, or TLC69608QRTWRQ1 equivalent, key selection criteria include its 24-pin WQFN wettable flank package, adaptive headroom voltage control (AHVC), UART/interrupt diagnostics interface, and support for 15-bit brightness resolution in hybrid PWM control mode.
Technical Context
The TLC69608QRTWRQ1 implements a time-multiplexed 8× local dimming architecture, integrating 16 independent current sinks with per-channel SRAM for brightness storage and synchronized update latency minimization. Its daisy-chain two-wire serial interface (CLK_I/SIN/SOUT/CLK_O) enables high-speed data transfer up to 20MHz with 1.8V/3.3V I/O compatibility.
Diagnostics include per-zone LED open/short detection (LOD/LSD) and thermal shutdown (TSD), with readback via programmable UART/INT or SOUT/CLK_O outputs. Adaptive headroom voltage control directly interfaces with DC/DC converters using only the FB pin of the last device in chain to simplify system layout and improve efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks for independent LED zone control |
| Max Output Current / Voltage | 30mA per channel into up to 20V load - sets maximum LED string voltage compliance |
| Current Matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit - enables fine-grained contrast control and smooth gradation in HDR displays |
| Interface Speed | Up to 20MHz daisy-chain serial rate - supports fast frame-rate updates for VRR and black insertion |
| Supply Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V or 5V rail systems |
| Quiescent Current | ≤200μA in standby mode - reduces always-on power draw in vehicle display modules |
Pinout & Package
Package: 24-pin WQFN (RTW) with wettable flank, 4mm × 4mm body size, 0.5mm pitch, exposed thermal pad for enhanced thermal dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and output drivers; decoupling required near pin |
| GND | Ground reference | Common return for analog/digital circuits and current sinks; connects to thermal pad |
| CLK_I | Input clock | Master clock input for synchronous daisy-chain timing; edge-triggered on rising edge |
| SIN | Serial data input | Configures device address, brightness, and diagnostic registers via upstream device |
| SOUT | Serial data output | Passes shifted-out register data to next device in daisy chain |
| CLK_O | Output clock | Re-drives CLK_I to next device; maintains signal integrity across long chains |
| FB | Feedback input | Connects only to final device's FB pin to regulate DC/DC converter output voltage |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events |
| OUT0–OUT15 | Constant-current outputs | 16 sinking terminals driving LED cathodes; each rated for 30mA/20V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive cabin and cluster display thermal requirements |
| Adaptive Headroom Voltage Control (AHVC) | Dynamic adjustment of DC/DC output voltage based on worst-case LED forward voltage - reduces power loss and heat generation |
| Programmable EMI reduction | Four selectable phase-shifting schemes and configurable drive strength - lowers radiated emissions without external filters |
| 15-bit hybrid dimming | Combines 8-bit max-current setting with 7-bit PWM depth - achieves >30,000 brightness steps while minimizing flicker |
| Dual diagnostics interface | UART/INT or SOUT/CLK_O reporting options - enables flexible integration with host MCU or dedicated fault monitoring circuitry |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel in center-stack multimedia system requiring dynamic local dimming for contrast enhancement and power savings. IC Role / Device Role / Timing Role: Primary local dimming controller managing 16 LED zones per IC, synchronized across multiple TLC69608QRTWRQ1 units in daisy chain. Use Value: Enables >10,000:1 contrast ratio and 30% lower backlight power vs. global dimming, meeting UNECE R155 functional safety readiness requirements. | Use Scenario: Driver-facing digital instrument cluster with variable ambient lighting and HUD synchronization needs. IC Role / Device Role / Timing Role: Zone-specific current sink driver supporting black insertion and VRR features for motion blur reduction and low-latency rendering. Use Value: Achieves sub-2ms brightness update latency and eliminates ghosting during rapid speed/tachometer transitions. |
| Automotive Head-Up Display (HUD) Backlight | Advanced Driver Assistance System (ADAS) Display Module |
Use Scenario: Compact HUD combiner unit requiring precise luminance control across narrow vertical LED arrays. IC Role / Device Role / Timing Role: Local dimming driver operating in 8× time-multiplexed mode to reduce peak current demand and thermal stress. Use Value: Maintains consistent brightness uniformity across 16 zones despite wide temperature swings (–40°C to +125°C), critical for optical clarity. | Use Scenario: Safety-critical ADAS display showing lane departure, blind spot, or collision warnings with guaranteed visibility under sunlight. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with integrated LOD/LSD/TSD detection and interrupt reporting to domain controller. Use Value: Provides real-time LED health status and automatic fallback behavior upon failure - supports ISO 26262 ASIL-B system-level compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69608QPWPRQ1 | Same electrical specs but in 28-pin HTSSOP package (9.7mm × 4.4mm); MSL Level-3 vs. Level-1 | Preferred where board space allows larger footprint and thermal pad soldering is less critical | Select when legacy PCB layout uses PWP package or requires higher creepage distance |
| TLC69618QRTWRQ1 | 60mA/20V output capability; identical WQFN-24 package and pinout | Required for higher-brightness LED strings or longer series configurations | Choose when design demands >30mA per channel while retaining same layout and firmware |
Compared with TLC69608QPWPRQ1, the TLC69608QRTWRQ1 offers superior thermal performance and reflow flexibility (Level-1 MSL), while TLC69618QRTWRQ1 provides double the current drive without changing footprint - enabling scalable brightness upgrades within identical mechanical constraints.
Availability
TLC69608QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and HUD backlight systems requiring stable component supply across extended vehicle production lifecycles.
Supply support for TLC69608QRTWRQ1 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 company specializing in analog, embedded processing, and automotive-grade ICs with over 50 years of industry leadership.
The TLC696x-Q1 product line delivers high-precision, time-multiplexed LED drivers engineered specifically for AEC-Q100-compliant automotive display subsystems demanding functional safety awareness and ultra-low power consumption.
FAQ
What is the maximum number of TLC69608QRTWRQ1 devices that can be daisy-chained?
The TLC69608QRTWRQ1 supports daisy-chain topologies of up to 1024 devices, enabling control of more than 32,000 local dimming zones. This scalability is achieved through its dedicated CLK_O and SOUT pins, which re-drive clock and shifted-out data to the next device without requiring external buffers or level shifters in the chain.
Does the TLC69608QRTWRQ1 support both PWM and analog dimming modes?
Yes, the TLC69608QRTWRQ1 supports hybrid dimming: an 8-bit global maximum current (MC) setting adjusts analog output level, while a separate 7-bit PWM depth provides fine brightness control - together delivering up to 15-bit effective resolution. This avoids visible flicker at low intensities and maintains color fidelity across dimming ranges.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69608QRTWRQ1?
The AHVC feature in the TLC69608QRTWRQ1 dynamically adjusts the DC/DC converter output voltage by monitoring the highest forward voltage among all driven LED strings. Only the FB pin of the last device in the daisy chain connects to the DC/DC feedback node, minimizing component count and ensuring optimal headroom - reducing power loss by up to 40% compared to fixed-voltage solutions.
What diagnostic capabilities does the TLC69608QRTWRQ1 provide for LED fault detection?
The TLC69608QRTWRQ1 integrates three real-time diagnostics: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These flags are reported either via dedicated INT pin assertion or through UART/SOUT readback, allowing host microcontrollers to initiate fail-safe responses such as zone bypass or brightness derating without interrupting display operation.
Is the TLC69608QRTWRQ1 pin-compatible with other members of the TLC696x-Q1 family?
Yes, all WQFN-packaged TLC696x-Q1 variants-including TLC69602QRTWRQ1, TLC69604QRTWRQ1, and TLC69608QRTWRQ1-share identical 24-pin RTW footprints and pin assignments. This enables direct substitution between 2×, 4×, and 8× time-multiplexed versions without PCB redesign, provided the application's current and voltage requirements align with the selected variant.
TLC69608QRTWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- No
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- 30mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69608QRTWRQ1 FAQ
1.How can I place an order for TLC69608QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69608QRTWRQ1 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 TLC69608QRTWRQ1 reliable?
The price and inventory of TLC69608QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69608QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69608QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69608QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69608QRTWRQ1?
TLC69608QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69608QRTWRQ1 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 TLC69608QRTWRQ1?
For technical support, including TLC69608QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69608QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69608QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69608QRTWRQ1 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 TLC69608QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69608QRTWRQ1?
All TLC69608QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69608QRTWRQ1, 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 TLC69608QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69608QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69608QRTWRQ1 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…
