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Texas Instruments TLC69652QRTWRQ1
- Part No.:
- TLC69652QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69652QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 32 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:4,391
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Product details
Overview
TLC69652QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC for LCD local dimming backlight systems, integrating 16 constant-current sinks with 30mA/50V output capability, ±2% channel-to-channel current matching, and daisy-chainable 20MHz two-wire serial interface.
For engineers reviewing the TLC69652QRTWRQ1 datasheet, TLC69652QRTWRQ1 pinout, TLC69652QRTWRQ1 application, or TLC69652QRTWRQ1 equivalent, key selection criteria include its 50V LED sink voltage rating, adaptive headroom voltage control (AHVC) for DC/DC optimization, UART/interrupt and SOUT/CLK_O diagnostic readback options, and wettable-flank WQFN-24 package for automotive-grade solder joint inspection.
Technical Context
The TLC69652QRTWRQ1 implements time-multiplexed local dimming control in 2/4/8 configurations, synchronizing with companion TLC696x0-Q1 scan MOSFET controllers to drive up to 32,000+ dimming zones via daisy-chained topology. Its SRAM-based per-channel brightness storage supports up to 15-bit resolution.
Diagnostic architecture includes independent LED open/short detection per zone and thermal shutdown reporting, with dual configurable readback paths: UART + INT pin or CLK_O + SOUT two-wire output - both programmable via internal registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current / Voltage | 30mA per channel, 50V max sink voltage - enables high-brightness LED strings without external boost stages |
| Current Matching | ±2% device-to-device and channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit PWM/hybrid dimming - supports deep black levels and smooth grayscale transitions |
| Interface Speed | 20MHz daisy-chain data rate - reduces update latency for high-refresh-rate displays (e.g., VRR, black insertion) |
| Supply Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V or 5V rail systems |
| Power Consumption | ≤3.5mA ICC in normal mode; ≤200μA in standby - minimizes system-level power budget impact |
| Operating Temp | –40°C to +125°C ambient - qualified for under-hood and display module environments |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, wettable flank, 0.5mm pitch, exposed thermal pad. MSL Level-1 (UNLIM), RoHS-compliant NIPDAU finish.
| 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; connects to exposed thermal pad for thermal and EMI performance |
| CLK_I | Serial clock input | Accepts 1.8V/3.3V-compatible clock signal; synchronizes daisy-chain data transfer |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback in SOUT/CLK_O mode |
| CLK_O | Serial clock output | Passes clock signal to next device; paired with SOUT for diagnostic readback |
| FB | Feedback input | Connects only to FB pin of last device in chain to regulate DC/DC converter output voltage |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events; requires external pull-up |
| OUT0–OUT15 | Constant-current LED sinks | 16 individually controlled current outputs; each drives one LED string segment in local dimming zone |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC converter via single FB pin on last device - eliminates per-device feedback routing and simplifies PCB layout |
| Programmable Diagnostic Readback | UART + INT or SOUT + CLK_O modes selectable via register - enables flexible integration with host MCU's available peripherals |
| EMI Reduction Schemes | Four integrated phase-shifting options and programmable interface drive strength - lowers radiated emissions without external filtering |
| Automotive Qualification | AEC-Q100 Grade 1, HBM ESD Level 2, CDM Level C4B - validated for safety-critical cockpit display applications |
| Black Insertion & VRR Support | Hardware-accelerated timing features - improves motion clarity and reduces judder in dynamic automotive HUD/cluster content |
Applications
| Automotive Central Information Display | Automotive Cluster Display |
|---|---|
Use Scenario: High-resolution infotainment screen requiring dynamic contrast enhancement in varying ambient light conditions. IC Role / Device Role / Timing Role: Local dimming controller managing 16×N LED zones behind LCD panel, synchronized with display frame timing. Use Value: Enables >10,000:1 contrast ratio and reduced power consumption versus global dimming, while maintaining color fidelity at low luminance. | Use Scenario: Driver-facing digital instrument cluster with critical readability under direct sunlight and night driving. IC Role / Device Role / Timing Role: Per-zone brightness modulator responding to real-time ambient light sensor input and HUD overlay status. Use Value: Eliminates halo artifacts around speed/tach graphics and sustains legibility at <1 cd/m² black level via precise 15-bit dimming control. |
| Automotive Head-Up Display (HUD) | Advanced Driver Assistance Systems (ADAS) Display |
Use Scenario: Compact combiner-based HUD projecting navigation and ADAS alerts onto windshield with minimal optical path loss. IC Role / Device Role / Timing Role: High-voltage (50V) LED driver powering short-pulse, high-intensity LED arrays for collimated projection. Use Value: Supports microsecond-level black insertion for flicker-free image rendering and meets ISO 15008 photometric requirements for driver attention retention. | Use Scenario: Safety-critical rearview or surround-view monitor requiring fail-operational luminance consistency during camera feed switching. IC Role / Device Role / Timing Role: Fault-tolerant backlight manager with LED open/short and thermal shutdown diagnostics reported via UART or interrupt pin. Use Value: Enables ASIL-B compliant system design by providing per-zone fault isolation and deterministic diagnostic response within <5ms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69652QPWPRQ1 | Same electrical specs, HTSSOP-28 package (9.7mm × 4.4mm), MSL Level-3, thermal pad not wettable flank | Preferred where board space allows larger footprint and reflow profile accommodates Level-3 moisture sensitivity | Select when legacy HTSSOP layout reuse or thermal mass requirements favor PWP over RTW |
| TLC69662QRTWRQ1 | 60mA/50V output (vs. 30mA), identical WQFN-24 package, same pinout and interface | Suitable for higher-luminance displays requiring >30mA per zone without redesigning current-sense or thermal layout | Drop-in replacement if higher LED current is needed; verify thermal margin and sense resistor scaling |
Compared with TLC69652QPWPRQ1, the TLC69652QRTWRQ1 offers superior manufacturability for automated optical inspection (AOI) via wettable flanks, while TLC69662QRTWRQ1 provides immediate current scalability without PCB revision - both retain full register compatibility and diagnostic functionality.
Availability
TLC69652QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central information displays, digital instrument clusters, and head-up displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC69652QRTWRQ1 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 delivering analog, embedded processing, and connectivity solutions with deep automotive qualification expertise and functional safety infrastructure.
The TLC696x2/4/8-Q1 product line targets high-reliability automotive LCD backlighting, specifically engineered to enable scalable local dimming architectures with integrated diagnostics, AHVC, and multi-device synchronization for next-generation cockpit displays.
FAQ
What is the maximum LED string voltage supported by the TLC69652QRTWRQ1?
The TLC69652QRTWRQ1 supports up to 50V sink voltage per output channel, enabling direct drive of multi-LED series strings without intermediate boost converters. This specification is confirmed in the device family datasheet Section 1 (Features) and applies specifically to the "x52" variant suffix, distinguishing it from the 20V-rated TLC69602/12-Q1 variants. The 50V rating is maintained across the full –40°C to +125°C operating range.
Does the TLC69652QRTWRQ1 require external current-setting resistors?
No, the TLC69652QRTWRQ1 does not require external current-setting resistors. It uses internal precision current references and matched transistor arrays to deliver factory-trimmed 30mA output per channel with ±2% channel-to-channel matching. The device's current accuracy is specified in the Electrical Characteristics table and does not depend on external components - eliminating tolerance stack-up and board area usage associated with discrete sense resistors.
How does the adaptive headroom voltage control (AHVC) function in the TLC69652QRTWRQ1?
The AHVC feature in the TLC69652QRTWRQ1 dynamically adjusts the DC/DC converter output voltage to match the minimum forward voltage required by the highest-driven LED string in the daisy-chained system. Only the FB pin of the final device in the chain connects to the DC/DC feedback node, reducing routing complexity. This closed-loop control minimizes power dissipation in the LED drivers and improves overall system efficiency - a key advantage over fixed-headroom designs.
Can the TLC69652QRTWRQ1 be used in a standalone configuration without a TLC696x0-Q1 scan controller?
No, the TLC69652QRTWRQ1 must be used with a companion TLC696x0-Q1 scan MOSFET controller to achieve 2/4/8 time-multiplexing. The TLC69652QRTWRQ1 provides constant-current sinking and brightness storage but lacks row/segment switching logic. The datasheet explicitly states this co-dependency in the Description section and functional block diagram - using the TLC69652QRTWRQ1 alone would result in static (non-multiplexed) operation incompatible with local dimming requirements.
What diagnostic fault conditions does the TLC69652QRTWRQ1 report, and how are they signaled?
The TLC69652QRTWRQ1 reports three distinct fault conditions: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These are signaled either via the open-drain INT pin (active-low assertion) or through register-read via UART/SOUT+CLK_O - both methods are user-configurable. Each fault is zone-specific (per OUT0–OUT15), enabling precise localization of failure points in large-scale backlight arrays without additional external monitoring circuitry.
TLC69652QRTWRQ1 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:
- 50V
- 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)
TLC69652QRTWRQ1 FAQ
1.How can I place an order for TLC69652QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69652QRTWRQ1 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 TLC69652QRTWRQ1 reliable?
The price and inventory of TLC69652QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69652QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69652QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69652QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69652QRTWRQ1?
TLC69652QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69652QRTWRQ1 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 TLC69652QRTWRQ1?
For technical support, including TLC69652QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69652QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69652QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69652QRTWRQ1 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 TLC69652QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69652QRTWRQ1?
All TLC69652QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69652QRTWRQ1, 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 TLC69652QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69652QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69652QRTWRQ1 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
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