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Texas Instruments TLC69658QPWPRQ1
- Part No.:
- TLC69658QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69658QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 128 MINI-LED MATRIX L
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TLC69658QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED backlight driver with 16 constant-current sinks, 30mA/50V output capability, ±2% channel-to-channel current matching, and 15-bit brightness resolution for local dimming control in LCD displays.
For engineers reviewing the TLC69658QPWPRQ1 datasheet, TLC69658QPWPRQ1 pinout, TLC69658QPWPRQ1 application, or TLC69658QPWPRQ1 equivalent, this device supports daisy-chained 2/4/8 time-multiplexing, adaptive headroom voltage control (AHVC), UART/interrupt diagnostics, and EMI-reduction phase-shifting - critical for high-contrast automotive display systems requiring functional safety support.
Technical Context
The TLC69658QPWPRQ1 implements a 16-channel constant-current sink architecture optimized for LCD local dimming, supporting up to 8× time-multiplexing when paired with TLC696x0-Q1 scan controllers. It integrates SRAM per channel for brightness storage and uses a two-wire daisy-chain interface (CLK_I/SIN → SOUT/CLK_O) with 20MHz max data rate.
Its diagnostic subsystem provides per-zone LED open/short detection (LOD/LSD) and thermal shutdown (TSD), with configurable readback via UART/INT or SOUT/CLK_O. Adaptive headroom voltage control (AHVC) dynamically adjusts VLED supply by monitoring the FB pin of the last device in chain to minimize power loss.
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 50V load - enables high-brightness, high-Vf LED strings |
| Current Matching | ±2% (typ.) 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 gradation |
| Daisy-Chain Interface | 20MHz two-wire serial (CLK_I/SIN → SOUT/CLK_O) - scales to >32,000 zones with 1024 devices |
| Supply Voltage Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V/5V domains |
| Quiescent Current | ≤200μA standby mode - minimizes always-on system power draw |
Pinout & Package
HTSSOP-28 (PWP) package with PowerPAD thermal pad (9.7mm × 4.4mm body, 1.2mm max height); wettable flank option available for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main logic and bias supply; decoupling required near pin |
| GND | Ground reference | Analog/digital ground plane connection; tied to exposed thermal pad |
| CLK_I | Input clock | Accepts master clock for synchronous daisy-chain timing (up to 20MHz) |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports UART-style readback |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for diagnostics |
| FB | Feedback input | Connects only to last device's FB pin for AHVC DC/DC regulation - simplifies layout |
| OUT0–OUT15 | Constant-current outputs | 16 high-side sinking terminals; each drives one LED string cathode |
| INT | Interrupt output | Active-low open-drain flag for LOD/LSD/TSD events - enables real-time fault response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for under-hood and display module environments |
| Adaptive Headroom Voltage Control (AHVC) | Reduces VLED overhead by dynamically adjusting DC/DC output based on worst-case string voltage - improves system efficiency |
| Programmable EMI reduction | Four selectable phase-shifting schemes and adjustable drive strength lower radiated emissions without external filters |
| Comprehensive diagnostics | Per-zone LED open/short detection plus thermal shutdown reporting via UART or INT/SOUT - supports ASIL-B functional safety goals |
| Flexible dimming modes | Global 8-bit maximum current (MC) setting + per-channel 15-bit brightness - enables both coarse calibration and fine-grained contrast control |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel in center-stack infotainment unit requiring dynamic local dimming for HDR video playback and sunlight readability. IC Role / Device Role / Timing Role: Primary 16-channel LED current sink controlling backlight zones behind LCD; synchronizes with TLC696x0-Q1 scan controller for 8× time-multiplexing. Use Value: Enables >10,000:1 contrast ratio and eliminates blooming around bright UI elements - critical for navigation map clarity and media fidelity. | Use Scenario: Driver-facing digital instrument cluster where consistent brightness, low latency, and fault resilience are mandatory. IC Role / Device Role / Timing Role: Local dimming driver managing segmented backlight zones aligned with speedometer, tachometer, and warning indicators. Use Value: Maintains legibility at night (low current) and daylight (high current) while detecting open-circuit LEDs before failure impacts safety-critical warnings. |
| Automotive Head-Up Display (HUD) Light Engine | Advanced Driver Assistance System (ADAS) Display |
Use Scenario: Compact HUD projector module requiring precise, flicker-free LED intensity control for virtual image projection onto windshield. IC Role / Device Role / Timing Role: Constant-current driver for RGB or white LED arrays in light engine; leverages 15-bit dimming resolution for grayscale accuracy. Use Value: Eliminates visible PWM artifacts during motion and supports black insertion/VRR features - essential for minimizing perceived lag and ghosting. | Use Scenario: ADAS overlay display integrated into rearview mirror or combiner, demanding rapid brightness adaptation to scene changes (e.g., tunnel exit). IC Role / Device Role / Timing Role: Local dimming controller receiving real-time ambient and camera data via host MCU to adjust zone currents dynamically. Use Value: Achieves <5ms brightness update latency and maintains ASIL-B-compliant diagnostics - ensures timely visual alerts without compromising functional safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69654QPWPRQ1 | Same HTSSOP-28 package, 30mA/50V rating, but supports only 4× time-multiplexing (vs. 8×) | Lower zone count scalability; suitable for mid-tier clusters with ≤512 zones | Select when system requires fewer daisy-chained devices and reduced firmware complexity |
| TLC69658QRTWRQ1 | Identical electrical specs and functionality, but in 24-pin WQFN (RTW) package with 4mm × 4mm footprint and Level-1 MSL rating | Higher thermal performance and smaller PCB area; preferred for space-constrained HUD modules | Select when board space is limited or reflow process requires Level-1 moisture sensitivity handling |
Compared with TLC69654QPWPRQ1 and TLC69658QRTWRQ1, the TLC69658QPWPRQ1 delivers full 8× time-multiplexing scalability in the HTSSOP package - making it optimal for high-zone-count central displays where daisy-chain depth and legacy PCB compatibility are prioritized over footprint size.
Availability
TLC69658QPWPRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up display light engines requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TLC69658QPWPRQ1 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 emphasis on reliability, longevity, and automotive-grade validation.
The TLC696x-Q1 product line is engineered specifically for automotive LCD local dimming, integrating precision current control, functional safety diagnostics, and scalable daisy-chain architecture to enable high-dynamic-range displays in safety-critical vehicle interfaces.
FAQ
What is the maximum number of TLC69658QPWPRQ1 devices that can be daisy-chained?
The TLC69658QPWPRQ1 supports daisy-chaining up to 1024 devices using its two-wire serial interface (CLK_I/SIN → SOUT/CLK_O), enabling control of more than 32,000 local dimming zones in large-format automotive displays. This scalability is achieved without additional address lines or complex arbitration protocols.
Does the TLC69658QPWPRQ1 require an external microcontroller to configure its brightness registers?
Yes, the TLC69658QPWPRQ1 requires an external host controller (e.g., MCU or SoC) to write to its internal SRAM-based brightness registers via the daisy-chain interface. It does not include onboard nonvolatile memory or autonomous pattern generation - configuration is fully host-managed for real-time adaptability.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69658QPWPRQ1?
The TLC69658QPWPRQ1 implements AHVC by monitoring the FB pin of the final device in the daisy chain to sense the highest forward voltage among all driven LED strings. It communicates this value back to the system DC/DC converter to dynamically adjust VLED - minimizing excess voltage drop and reducing power dissipation across all 16 channels.
What diagnostic flags does the TLC69658QPWPRQ1 provide, and how are they reported?
The TLC69658QPWPRQ1 reports three hardware-diagnosed faults: LED Open Detection (LOD), LED Short Detection (LSD), and Thermal Shutdown Detection (TSD). These are reported either through the active-low INT pin or via UART-style readback using the SOUT/CLK_O pair - both methods allow integration into ASIL-B safety architectures.
Is the TLC69658QPWPRQ1 pin-compatible with other members of the TLC696x-Q1 family in the same package?
Yes, the TLC69658QPWPRQ1 is pin-compatible with all HTSSOP-28 variants in the TLC696x-Q1 family (e.g., TLC69652QPWPRQ1, TLC69654QPWPRQ1), sharing identical pinout, power sequencing, and interface signaling - enabling design reuse and simplified BOM rationalization across different current/voltage configurations.
TLC69658QPWPRQ1 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:
- 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
- Supplier Device Package:
- 28-HTSSOP
TLC69658QPWPRQ1 FAQ
1.How can I place an order for TLC69658QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69658QPWPRQ1 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 TLC69658QPWPRQ1 reliable?
The price and inventory of TLC69658QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69658QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69658QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69658QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69658QPWPRQ1?
TLC69658QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69658QPWPRQ1 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 TLC69658QPWPRQ1?
For technical support, including TLC69658QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69658QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69658QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69658QPWPRQ1 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 TLC69658QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69658QPWPRQ1?
All TLC69658QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69658QPWPRQ1, 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 TLC69658QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69658QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69658QPWPRQ1 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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