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Texas Instruments TLC69604QPWPRQ1
- Part No.:
- TLC69604QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69604QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 64 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:3,066
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Product details
Overview
TLC69604QPWPRQ1 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 support for 2/4/8 time-multiplexed local dimming in LCD displays. It operates from 3V to 5.5V and integrates UART/interrupt and two-wire (CLK_O/SOUT) diagnostic readback for automotive cluster, HUD, and central infotainment displays.
For engineers reviewing the TLC69604QPWPRQ1 datasheet, TLC69604QPWPRQ1 pinout, TLC69604QPWPRQ1 application, or TLC69604QPWPRQ1 equivalent, key selection criteria include its 28-pin HTSSOP package with PowerPAD™ thermal enhancement, adaptive headroom voltage control (AHVC), 15-bit brightness resolution, and functional safety documentation support for ASIL-B system integration.
Technical Context
The TLC69604QPWPRQ1 implements a daisy-chained two-wire serial interface supporting up to 20MHz data rates and interoperability with 1.8V/3.3V logic levels. Its internal SRAM stores per-channel brightness values and enables black insertion and variable refresh rate (VRR) features to enhance display quality.
Diagnostic architecture includes dedicated LED open (LOD), LED short (LSD), and thermal shutdown (TSD) detection flags, with programmable readback via either UART/INT or CLK_O/SOUT outputs - selectable by register configuration without hardware change.
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 - supports standard automotive LED strings |
| Current Matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit PWM depth - enables fine-grained contrast control for HDR displays |
| Supply Voltage Range | 3V to 5.5V - compatible with automotive 3.3V and 5V rail systems |
| Quiescent Current | ≤200μA in standby mode - minimizes battery drain during vehicle sleep states |
| Operating Temp | –40°C to +125°C (TA) - qualified for under-hood and dashboard mounting |
Pinout & Package
Package: HTSSOP-28 (PWP) with exposed thermal pad (PowerPAD™), 9.7mm × 4.4mm body, wettable flank option available. Moisture Sensitivity Level 3 (260°C peak reflow, 168-hour floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail (3V–5.5V); decoupling required near pin |
| GND | Ground reference | System ground return; connects to thermal pad for thermal dissipation |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain timing synchronization |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Drives downstream device in daisy chain; used for diagnostic readback |
| CLK_O | Serial clock output | Propagates synchronized clock to next device; part of dual-wire diagnostic path |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for adaptive headroom control |
| INT | Interrupt output | Active-low open-drain flag for LOD/LSD/TSD events; requires external pull-up |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks; each drives one LED string segment |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC converter via single FB pin - reduces power loss and heat generation |
| Dual Diagnostic Readback Modes | Configurable UART/INT or CLK_O/SOUT reporting - enables flexible ECU integration without added interface ICs |
| Programmable EMI Reduction | Adjustable drive strength and 4-phase shifting - meets CISPR-25 Class 5 radiated emissions limits |
| Black Insertion & VRR Support | Hardware-accelerated timing features - improves motion clarity and reduces ghosting in fast-moving HUD content |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C operation with HBM ESD Level 2 and CDM Level C4B - suitable for safety-critical cockpit displays |
Applications
| Automotive Cluster Display | Automotive Head-Up Display (HUD) |
|---|---|
Use Scenario: High-contrast, low-latency instrumentation panel with dynamic dimming zones behind analog speedometer and digital tachometer graphics. IC Role / Device Role / Timing Role: Local dimming controller synchronizing 16 LED zones to match gauge needle position and warning icon illumination. Use Value: Enables >10,000:1 contrast ratio while maintaining <50μs brightness update latency for real-time speed changes. | Use Scenario: Projection-based HUD requiring precise luminance control across overlapping virtual image regions to avoid glare and halo artifacts. IC Role / Device Role / Timing Role: Zone-specific current regulation for segmented LED light engine, coordinated with projection timing signals. Use Value: Delivers uniform brightness across FOV using ±2% channel matching, critical for minimizing visual fatigue during long drives. |
| Central Infotainment Display | Automotive Rear Seat Entertainment |
Use Scenario: 10.25″+ touchscreen display with ambient light-adaptive dimming and video playback optimization. IC Role / Device Role / Timing Role: Backlight driver interfacing with display processor over daisy-chained serial bus for frame-synchronized dimming updates. Use Value: 15-bit brightness resolution supports Dolby Vision IQ tone mapping with minimal banding in dark scene transitions. | Use Scenario: Dual-screen rear-seat system where independent dimming preserves battery life during extended video playback. IC Role / Device Role / Timing Role: Standalone local dimming node in multi-device chain, managed via UART for diagnostics and firmware updates. Use Value: ≤200μA standby current extends vehicle off-state battery runtime beyond 30 days without recharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69604QRTWRQ1 | Same electrical specs but in 24-pin WQFN (4mm × 4mm) with Level-1 MSL rating - no floor life limitation | Better thermal performance in space-constrained layouts; preferred for high-density PCBs with thermal vias | Select when board area is limited and reflow profile allows Level-1 handling |
| MAX20444ATJ+T | 16-channel, 40V max, 40mA/channel; I²C interface; no daisy-chain support; integrated boost converter | Self-contained solution for lower-channel-count designs; lacks AHVC and multiplexing flexibility | Choose when system-level simplicity outweighs scalability and ultra-low quiescent current needs |
Compared with TLC69604QRTWRQ1 and MAX20444ATJ+T, the TLC69604QPWPRQ1 provides superior daisy-chain scalability (up to 1024 devices), lowest standby current (≤200μA), and adaptive headroom control - making it optimal for large-area, high-reliability automotive displays requiring long-term BOM stability.
Availability
TLC69604QPWPRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, head-up displays, and central infotainment systems requiring stable component supply across extended production lifecycles and stringent AEC-Q100 compliance.
Supply support for TLC69604QPWPRQ1 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 and embedded processing solutions, with deep expertise in automotive-grade power management and display interface technologies.
The TLC696x-Q1 product line was engineered specifically for high-fidelity LCD local dimming in safety-critical automotive displays, emphasizing functional safety readiness, thermal robustness, and electromagnetic compatibility in harsh vehicle environments.
FAQ
What is the maximum number of TLC69604QPWPRQ1 devices that can be daisy-chained?
The TLC69604QPWPRQ1 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 high-speed two-wire serial interface operating at up to 20MHz, with CLK_O and SOUT pins propagating timing and data to subsequent devices in the chain. Each TLC69604QPWPRQ1 retains full diagnostic capability regardless of position in the chain.
Does the TLC69604QPWPRQ1 require an external DC/DC converter?
Yes, the TLC69604QPWPRQ1 requires an external DC/DC converter to supply the LED string voltage. It does not integrate switching regulation. However, its Adaptive Headroom Voltage Control (AHVC) feature uses the FB pin - connected only from the last device in the daisy chain - to dynamically adjust the DC/DC output, minimizing power loss and heat generation across varying LED forward voltage conditions.
How does the TLC69604QPWPRQ1 handle LED fault detection?
The TLC69604QPWPRQ1 performs per-zone LED open (LOD) and short (LSD) detection continuously during operation. Detected faults trigger the INT pin (active-low) and are reported via either UART/INT or CLK_O/SOUT diagnostic interfaces, depending on register configuration. Thermal shutdown (TSD) is also monitored and reported through the same channels, ensuring comprehensive fault coverage for ASIL-B compliant systems.
Can the TLC69604QPWPRQ1 operate without the FB connection?
No - the FB pin must be connected to the feedback node of the external DC/DC converter for proper operation. The TLC69604QPWPRQ1 relies on this connection to implement Adaptive Headroom Voltage Control (AHVC), which adjusts the DC/DC output voltage to match the minimum required headroom across all active LED strings. Omitting the FB connection disables AHVC and risks overvoltage stress or inefficient operation.
What is the purpose of the PowerPAD™ thermal pad on the HTSSOP package of the TLC69604QPWPRQ1?
The exposed thermal pad (PowerPAD™) on the TLC69604QPWPRQ1's HTSSOP-28 package provides a low-thermal-resistance path from the die to the PCB, essential for dissipating heat generated during high-current LED driving. It must be soldered directly to a large copper pour or thermal plane on the board - ideally with multiple thermal vias - to maintain junction temperature within the –40°C to +125°C operating range and ensure long-term reliability in automotive environments.
TLC69604QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- 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:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC69604QPWPRQ1 FAQ
1.How can I place an order for TLC69604QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69604QPWPRQ1 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 TLC69604QPWPRQ1 reliable?
The price and inventory of TLC69604QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69604QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69604QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69604QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69604QPWPRQ1?
TLC69604QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69604QPWPRQ1 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 TLC69604QPWPRQ1?
For technical support, including TLC69604QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69604QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69604QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69604QPWPRQ1 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 TLC69604QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69604QPWPRQ1?
All TLC69604QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69604QPWPRQ1, 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 TLC69604QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69604QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69604QPWPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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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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