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Texas Instruments TLC69654QPWPRQ1
- Part No.:
- TLC69654QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69654QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 64 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:4,701
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Product details
Overview
TLC69654QPWPRQ1 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 daisy-chainable 20MHz two-wire interface - designed for local dimming in central infotainment displays.
For engineers reviewing the TLC69654QPWPRQ1 datasheet, TLC69654QPWPRQ1 pinout, TLC69654QPWPRQ1 application, or TLC69654QPWPRQ1 equivalent, this page delivers verified technical context, validated pin functions, real-world automotive display use cases, and functionally comparable alternatives with documented differences in current rating and voltage headroom.
Technical Context
The TLC69654QPWPRQ1 implements time-multiplexed local dimming control (4×) within a daisy-chained architecture supporting up to 1024 devices. It integrates 16-channel SRAM-based brightness storage and adaptive headroom voltage control (AHVC) to regulate external DC/DC converters via a single FB pin from the last device in chain.
Diagnostics include per-zone LED open/short detection and thermal shutdown reporting via UART/INT or CLK_O/SOUT outputs. Its hybrid PWM/digital dimming supports up to 15-bit brightness resolution while maintaining ≤200μA standby current and ≤3.5mA normal-mode ICC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 30mA per channel - enables driving high-brightness LED strings in automotive LCD backlights without external current boosters. |
| Output Voltage Headroom | 50V max - supports wide VLED rail configurations and long LED chains in multi-zone dimming systems. |
| Current Matching | ±2% channel-to-channel (typ.) - ensures uniform luminance across local dimming zones without per-channel calibration. |
| Data Rate | 20MHz daisy-chain interface - allows rapid global brightness updates (<1ms latency) for black insertion and VRR display features. |
| Supply Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V or 5V domain supplies without LDO overhead. |
| Diagnostic Outputs | UART + INT or CLK_O + SOUT - provides flexible fault reporting integration into host MCU or ASIL-B safety monitors. |
| Thermal Rating | AEC-Q100 Grade 1 (–40°C to +125°C TA) - qualified for under-hood and dashboard-mounted display electronics. |
Pinout & Package
Package: HTSSOP-28 (PWP), 9.7mm × 4.4mm body, PowerPAD™ thermal-enhanced exposed pad, wettable flank option available.
| 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 domains; connects to thermal pad for thermal dissipation. |
| CLK_I | Input clock | Accepts 1.8V/3.3V-compatible serial clock for daisy-chain data synchronization. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller. |
| SOUT | Serial data output | Passes unmodified or diagnostic data downstream; used for readback in two-wire mode. |
| CLK_O | Output clock | Drives clock signal to next device in daisy chain; enables synchronous update across all zones. |
| FB | Feedback input | Connects only to final device's FB pin to control external DC/DC converter for system-level AHVC. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events to host processor. |
| OUT0–OUT15 | Constant-current sinks | 16 dedicated LED cathode drivers; each supports 30mA/50V with internal current regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting VLED supply to match minimum required headroom across all active zones. |
| 15-bit brightness resolution | Enables smooth gradation and eliminates visible contouring in high-dynamic-range automotive displays. |
| Programmable EMI reduction | Four phase-shifting schemes and adjustable drive strength lower radiated emissions during high-speed daisy-chain operation. |
| Per-zone LED diagnostics | Detects open-circuit (LOD), short-circuit (LSD), and thermal shutdown (TSD) independently for each of 16 channels. |
| Black insertion & VRR support | Minimizes motion blur and synchronizes dimming updates with variable refresh rate timing for enhanced visual fidelity. |
Applications
| Central Infotainment Display | Instrument Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel in vehicle center stack requiring dynamic local dimming for contrast enhancement and glare reduction in daylight. IC Role / Device Role / Timing Role: Primary 16-channel LED sink driver implementing 4× time-multiplexed dimming zones per device, synchronized via daisy-chain CLK_I/CLK_O. Use Value: Delivers 30mA/50V per channel to sustain brightness across wide temperature range while enabling <1ms brightness updates for HDR video playback. |
Use Scenario: Driver-facing digital instrument cluster with safety-critical luminance uniformity and fault-reporting requirements. IC Role / Device Role / Timing Role: Local dimming controller with integrated LOD/LSD/TSD diagnostics routed to ASIL-B host MCU via UART or INT pin. Use Value: ±2% channel matching ensures consistent backlight intensity across speedometer, tachometer, and warning indicators without manual trimming. |
| Head-Up Display (HUD) Backlight | ADAS Camera Interface Display |
Use Scenario: Compact HUD combiner module requiring low-profile LED driver with minimal board space and thermal footprint. IC Role / Device Role / Timing Role: Constant-current sink managing segmented LED array behind reflective optics; uses AHVC to minimize heat generation at high ambient temperatures. Use Value: HTSSOP-28 PowerPAD package achieves >1.5°C/W junction-to-board thermal resistance, enabling passive cooling in sealed HUD enclosures. |
Use Scenario: Rear-seat entertainment or ADAS status display where EMI must be minimized near camera sensor interfaces. IC Role / Device Role / Timing Role: EMI-optimized backlight driver using programmable phase-shifting and reduced drive strength on SIN/SOUT lines. Use Value: Four selectable phase-shift modes suppress fundamental clock harmonics, reducing RF coupling into adjacent MIPI CSI-2 video traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69652QPWPRQ1 | Same 30mA/50V rating but 2× time-multiplexing (vs. 4×); identical pinout and register map. | Lower zone count per device; requires more ICs for same total dimming zones. | Select when system-level dimming granularity is coarser and daisy-chain latency budget is tighter. |
| TLC69664QPWPRQ1 | 60mA/50V output (2× current), same 4× multiplexing, identical package and interface. | Supports higher-brightness LED strings or fewer devices per display; higher power dissipation per channel. | Choose when driving high-luminance micro-LED arrays or when reducing component count outweighs thermal design complexity. |
Compared with TLC69652QPWPRQ1, the TLC69654QPWPRQ1 delivers finer local dimming control per device; compared with TLC69664QPWPRQ1, it reduces thermal load and PCB copper area requirements while maintaining full 50V headroom for demanding automotive VLED rails.
Availability
TLC69654QPWPRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up display backlighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC69654QPWPRQ1 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 solutions, with leadership in automotive-grade power management and interface ICs.
The TLC696x-Q1 product line was engineered specifically for AEC-Q100-compliant LCD local dimming in automotive displays, emphasizing precision current matching, daisy-chain scalability, and functional safety-aware diagnostics.
FAQ
What is the maximum LED string voltage supported by the TLC69654QPWPRQ1?
The TLC69654QPWPRQ1 supports up to 50V output headroom per channel, allowing direct connection to LED strings operating at up to 50V forward voltage. This enables compatibility with multi-LED series configurations common in automotive backlight modules without requiring external high-voltage transistors or charge pumps.
Does the TLC69654QPWPRQ1 require external current-setting resistors?
No, the TLC69654QPWPRQ1 uses fully integrated, factory-trimmed current sources - no external resistors are needed to set the 30mA per-channel output. Global 8-bit maximum current (MC) adjustment is performed digitally via I²C-compatible daisy-chain interface, eliminating component variation and layout sensitivity.
How does the adaptive headroom voltage control (AHVC) function in the TLC69654QPWPRQ1?
The TLC69654QPWPRQ1 implements AHVC by monitoring the highest required VLED headroom among all active channels and feeding that value back via the FB pin to an external DC/DC converter. Only the last device in the daisy chain connects FB to the converter, simplifying system-level voltage regulation and minimizing wasted power across the entire backlight array.
Can the TLC69654QPWPRQ1 be used without functional safety certification?
Yes, the TLC69654QPWPRQ1 operates reliably outside functional safety contexts; however, its functional safety-capable documentation (including FIT rate data and failure mode analysis) is provided to support ISO 26262 ASIL-B system integration when required. The device itself does not require safety compiler or lockstep cores to operate.
What package options are available for the TLC69654QPWPRQ1?
The TLC69654QPWPRQ1 is offered exclusively in the HTSSOP-28 (PWP) package with PowerPAD™ thermal pad, measuring 9.7mm × 4.4mm. It is not available in WQFN - that variant is designated as TLC69654QRTWRQ1. The PWP package supports automated optical inspection (AOI) via wettable flanks and provides robust thermal performance for automotive under-hood environments.
TLC69654QPWPRQ1 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
TLC69654QPWPRQ1 FAQ
1.How can I place an order for TLC69654QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69654QPWPRQ1 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 TLC69654QPWPRQ1 reliable?
The price and inventory of TLC69654QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69654QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69654QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69654QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69654QPWPRQ1?
TLC69654QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69654QPWPRQ1 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 TLC69654QPWPRQ1?
For technical support, including TLC69654QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69654QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69654QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69654QPWPRQ1 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 TLC69654QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69654QPWPRQ1?
All TLC69654QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69654QPWPRQ1, 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 TLC69654QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69654QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69654QPWPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
-
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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