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Texas Instruments TLC69602QRTWRQ1
- Part No.:
- TLC69602QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69602QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 32 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TLC69602QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC for local dimming backlight systems, integrating 16 precision constant-current sinks (30mA/20V), adaptive headroom voltage control (AHVC), and daisy-chain UART/INT or SOUT/CLK_O diagnostics - deployed in central infotainment displays requiring high channel-to-channel current matching (±2% typ.) and thermal shutdown detection.
For engineers reviewing the TLC69602QRTWRQ1 datasheet, TLC69602QRTWRQ1 pinout, TLC69602QRTWRQ1 application, or TLC69602QRTWRQ1 equivalent, this device is selected for automotive LCD backlight systems demanding time-multiplexed 2× local dimming, <15-bit brightness resolution, ESD-robust (HBM Class 2, CDM C4B) operation from –40°C to +125°C, and diagnostic reporting via programmable two-wire readback.
Technical Context
The TLC69602QRTWRQ1 implements a 16-channel constant-current sink architecture with per-channel PWM/hybrid dimming control and global 8-bit maximum current (MC) setting. It supports up to 20MHz daisy-chain data transfer across 1024 devices using 1.8V/3.3V I/O-compatible CLK_I/SIN interface.
Its adaptive headroom voltage control (AHVC) directly regulates external DC/DC converters via the FB pin of the last device in chain, minimizing power loss. Diagnostics include per-zone LED open/short detection (LOD/LSD), thermal shutdown (TSD), and dual readback modes: UART+INT or SOUT+CLK_O.
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 - enables driving mid-voltage LED strings in automotive displays |
| Current Matching | ±2% (typ.) channel-to-channel and device-to-device error - ensures uniform luminance across dimming zones |
| Dimming Resolution | Up to 15-bit brightness control - supports smooth grayscale transitions and black-level fidelity |
| Daisy-Chain Speed | Up to 20MHz serial data rate - reduces update latency for high-refresh-rate displays (e.g., VRR) |
| Supply Voltage Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V or 5V rail domains |
| Quiescent Current | ≤200μA in standby mode - minimizes always-on system power draw |
Pinout & Package
Package: 24-pin WQFN (RTW) with wettable flank, 4mm × 4mm body, 0.5mm pitch, exposed thermal pad - optimized for automotive thermal cycling reliability and automated optical inspection (AOI).
| 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 thermal pad solder connection |
| CLK_I | Serial clock input | Accepts 20MHz max clock for daisy-chain configuration; synchronous to SIN |
| SIN | Serial data input | Receives command/data from upstream device or host controller |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback |
| CLK_O | Serial clock output | Passes synchronized clock to next device; used with SOUT for two-wire readback |
| FB | Feedback input | Connects only to last device's FB pin to regulate DC/DC converter output voltage |
| INT | Interrupt output | Active-low open-drain flag for LOD, LSD, or TSD events; requires pull-up |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks; each drives cathode of LED string to GND |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM Class 2 and CDM C4B ESD robustness |
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation by dynamically adjusting DC/DC output to match worst-case LED forward voltage |
| Programmable interface drive strength | Configurable slew rate on CLK_I/SIN to suppress EMI in noisy automotive environments |
| Integrated 4-phase shifting | Staggered PWM timing across channels lowers peak current demand and input capacitance stress |
| Black insertion & VRR support | Minimizes motion blur and enables variable refresh rate synchronization in premium displays |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel with 128+ local dimming zones for glare-free daytime visibility and deep-black contrast at night. IC Role / Device Role / Timing Role: Primary local dimming controller managing 16 LED zones per TLC69602QRTWRQ1, daisy-chained for full-panel coverage. Use Value: ±2% current matching ensures consistent brightness across zones; AHVC cuts system power by >15% versus fixed-headroom designs. |
Use Scenario: Compact instrument cluster with dynamic HUD-aligned backlighting and real-time warning illumination. IC Role / Device Role / Timing Role: Zone-specific dimming driver synchronized to vehicle CAN bus alerts and display frame timing. Use Value: 15-bit dimming resolution enables smooth fade transitions; thermal shutdown prevents luminance drift during prolonged high-temperature operation. |
| Automotive Head-Up Display (HUD) Backlight | ADAS Driver Monitoring System Display |
Use Scenario: Projection-based HUD requiring precise luminance control across curved optical path segments. IC Role / Device Role / Timing Role: Local dimming node controlling segmented LED array behind combiner optics; coordinated via daisy-chain timing. Use Value: 20MHz daisy-chain speed enables sub-1ms full-panel updates; LOD/LSD diagnostics prevent false HUD blanking due to LED failure. |
Use Scenario: In-cabin IR-illuminated display for driver attention monitoring, requiring flicker-free, low-noise backlighting. IC Role / Device Role / Timing Role: Constant-current source for NIR LED strings, with hybrid PWM control to eliminate visible beat frequencies. Use Value: Ultra-low standby current (≤200μA) extends battery life in always-on monitoring mode; wettable flank WQFN ensures reflow reliability in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69602QPWPRQ1 | Same electrical specs but HTSSOP-28 package (9.7mm × 4.4mm); MSL Level-3 vs. RTW's Level-1 | Better heat spreading in forced-air or thermally constrained layouts; larger footprint limits high-density PCBs | Select when board-level thermal management favors exposed PowerPAD + larger copper area |
| TLC69604QRTWRQ1 | Identical WQFN-24 package and pinout, but supports 4× time-multiplexing (vs. 2×) and same 30mA/20V output | Enables higher effective dimming resolution per physical channel; requires updated host firmware for multiplex sequencing | Select when system architecture requires deeper time-division multiplexing without increasing channel count |
Compared with TLC69602QPWPRQ1, the TLC69602QRTWRQ1 offers superior moisture sensitivity rating (Level-1 vs. Level-3) and smaller footprint, while TLC69604QRTWRQ1 provides identical packaging with enhanced time-multiplexing capability - both require no schematic changes but may need layout or firmware adaptation.
Availability
TLC69602QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up display backlighting requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TLC69602QRTWRQ1 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 and embedded processing technologies, with leadership in automotive-grade power management and signal chain solutions.
The TLC696x2/4/8-Q1 product line is engineered specifically for automotive LCD local dimming backlight systems, emphasizing high-current precision, functional safety readiness, and daisy-chain scalability across multi-zone display architectures.
FAQ
What is the maximum number of TLC69602QRTWRQ1 devices that can be daisy-chained?
The TLC69602QRTWRQ1 supports daisy-chain topologies of up to 1024 devices, enabling control of over 32,000 local dimming zones in large-format automotive displays. This scalability is achieved through its high-speed 20MHz serial interface and dedicated CLK_O/SOUT pins for seamless inter-device clock and data forwarding - all while maintaining deterministic update latency critical for VRR and black insertion features in the TLC69602QRTWRQ1.
Does the TLC69602QRTWRQ1 support functional safety certification for ASIL-B systems?
The TLC69602QRTWRQ1 is functional safety-capable, with documentation available from Texas Instruments to support ISO 26262-compliant system design. While the device itself is not ASIL-B certified out-of-box, its built-in diagnostics - including LED open/short detection, thermal shutdown reporting, and dual readback modes (UART/INT or SOUT/CLK_O) - provide the fault coverage needed to achieve ASIL-B decomposition in end-system implementations using the TLC69602QRTWRQ1.
How does Adaptive Headroom Voltage Control (AHVC) reduce system power in the TLC69602QRTWRQ1?
AHVC in the TLC69602QRTWRQ1 dynamically adjusts the DC/DC converter output voltage to match the highest forward voltage among active LED strings, rather than using a fixed overvoltage margin. By connecting only the FB pin of the final device in the daisy chain to the DC/DC feedback node, the TLC69602QRTWRQ1 eliminates redundant headroom across all channels - reducing power dissipation in the LED driver stage by up to 22% compared to fixed-headroom architectures.
Can the TLC69602QRTWRQ1 drive LEDs requiring more than 20V forward voltage?
No - the TLC69602QRTWRQ1 is rated for a maximum output voltage of 20V per channel, as specified in its "30mA / 20V" output capability. For higher-voltage LED strings (e.g., >20V), TI offers the TLC69652QRTWRQ1 (30mA / 50V) or TLC69662QRTWRQ1 (60mA / 50V), which share identical WQFN-24 packaging and pinout with the TLC69602QRTWRQ1 but differ in voltage/current ratings and internal current-sink architecture.
What is the purpose of the wettable flank feature on the TLC69602QRTWRQ1 WQFN package?
The wettable flank on the TLC69602QRTWRQ1's RTW package enables automated optical inspection (AOI) of solder joints beneath the device - a critical requirement for automotive manufacturing quality assurance. The vertical sidewall plating allows solder to wick visibly during reflow, confirming proper thermal pad attachment and void-free interconnection, thereby improving field reliability under thermal cycling and mechanical vibration conditions typical of automotive deployment for the TLC69602QRTWRQ1.
TLC69602QRTWRQ1 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:
- Constant Current
- 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:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69602QRTWRQ1 FAQ
1.How can I place an order for TLC69602QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69602QRTWRQ1 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 TLC69602QRTWRQ1 reliable?
The price and inventory of TLC69602QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69602QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69602QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69602QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69602QRTWRQ1?
TLC69602QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69602QRTWRQ1 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 TLC69602QRTWRQ1?
For technical support, including TLC69602QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69602QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69602QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69602QRTWRQ1 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 TLC69602QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69602QRTWRQ1?
All TLC69602QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69602QRTWRQ1, 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 TLC69602QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69602QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69602QRTWRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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