My Inquiry
My Account
Texas Instruments TLC69650QRTWRQ1
- Part No.:
- TLC69650QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69650QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 8-SCAN MOSFET CONTROL
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC69650QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive scan MOSFET controller designed for local dimming backlight systems, supporting up to 1024 cascaded devices, delivering 30mA channel current at 50V drain-source voltage, and operating from 3V to 5.5V VCC - deployed in central information displays, cluster displays, and head-up displays.
For engineers reviewing the TLC69650QRTWRQ1 datasheet, TLC69650QRTWRQ1 pinout, TLC69650QRTWRQ1 application, or TLC69650QRTWRQ1 equivalent, this page delivers verified technical context, validated package mapping (WQFN-24), confirmed daisy-chain interface specs (20MHz, 1.8V/3.3V I/O), thermal shutdown diagnostics, and functional safety documentation support - all specific to the TLC69650QRTWRQ1 variant.
Technical Context
The TLC69650QRTWRQ1 implements a full-array local dimming control architecture compatible with current-sink drivers TLC696x2/4/8-Q1, enabling 2/4/8 time-multiplexing via 16 integrated constant-current sinks per device. It integrates ghost-cancellation logic to eliminate upside ghosting and adaptive headroom voltage control to directly regulate external DC/DC converters using only the FB pin of the last device in the chain.
Diagnostics include LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD), with programmable readback via UART/INT or two-wire CLK_O/SOUT. Interface driving capability is software-programmable to reduce EMI, and it supports minimum brightness update latency, black insertion, and variable refresh rate (VRR) features for enhanced display quality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - powers internal logic and interface circuitry across automotive supply variations. |
| Channel Current / Voltage | 30mA / 50V - drives P-MOSFET gates in high-voltage local dimming backlights without external level-shifting. |
| Data Transfer Rate | Up to 20MHz - enables fast daisy-chain configuration and real-time dimming updates across large LED arrays. |
| I/O Voltage Compatibility | 1.8V and 3.3V - interoperates with modern MCU GPIOs and low-voltage FPGAs without level translators. |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and instrument panel mounting in automotive environments. |
| ESD Rating | HBM Level 2 (±2kV), CDM Level C4B (±1kV) - meets AEC-Q100 stress test requirements for robust manufacturing and field reliability. |
| Diagnostic Outputs | UART + INT pin or CLK_O + SOUT - provides flexible error reporting for LOD, LSD, and TSD without requiring additional communication peripherals. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm wettable flank, 0.5mm pitch, exposed thermal pad (Pin 25) - optimized for thermal dissipation and automated optical inspection (AOI) in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Supplies core logic and interface circuitry; requires local 100nF bypass capacitor to GND. |
| GND | Ground reference | Common return path for analog/digital circuits; must be connected to exposed thermal pad for thermal performance. |
| CLK_I | Clock input | Accepts master clock for synchronous daisy-chain data transfer; edge-triggered on rising edge. |
| SIN | Serial data input | Receives configuration and dimming data from upstream device or host controller. |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback in two-wire mode. |
| CLK_O | Clock output | Propagates synchronized clock to next device; used with SOUT for diagnostic readback. |
| FB | Feedback input | Connects only to last device's FB pin to regulate DC/DC converter output voltage for adaptive headroom control. |
| INT | Interrupt output | Active-low open-drain signal indicating LOD, LSD, or TSD event; requires external pull-up. |
| G0–G7 | Gate drive outputs | Eight dedicated outputs controlling P-MOSFET gates in scan topology; each supports 50V max VDS. |
| D0–D7 | Current sink outputs | Eight constant-current sinks (30mA max) for LED string return paths; individually programmable via CC register. |
Key Features
| Feature | Design Value |
|---|---|
| Ghost-cancellation function | Eliminates upside ghosting artifacts in time-multiplexed local dimming by synchronizing gate and current sink timing. |
| Adaptive headroom voltage control | Reduces power loss by dynamically adjusting DC/DC output to match minimum required LED forward voltage across all strings. |
| Programmable interface drive strength | Adjusts output slew rate to suppress EMI during high-speed daisy-chain operation without sacrificing timing margins. |
| Black insertion & VRR support | Enables motion blur reduction and flicker-free display updates by inserting black frames and synchronizing refresh rate with content. |
| Minimum brightness update latency | Ensures sub-frame response time for dynamic dimming updates, critical for high-refresh-rate automotive HUDs and clusters. |
Applications
| Automotive Central Information Display | Automotive Cluster Display |
|---|---|
Use Scenario: High-resolution LCD backlight with >1000 local dimming zones for infotainment center. IC Role / Device Role / Timing Role: Scan MOSFET controller coordinating gate timing and current sink sequencing across cascaded TLC696x2/4/8-Q1 drivers. Use Value: Enables deep black levels and >10,000:1 contrast ratio while maintaining AEC-Q100 compliance and functional safety readiness. |
Use Scenario: Compact, high-brightness instrument cluster with dynamic dimming to adapt to ambient lighting. IC Role / Device Role / Timing Role: Local dimming coordinator managing 16-channel P-MOSFET switching and 30mA per-string current regulation. Use Value: Delivers glare-free readability in direct sunlight and nighttime conditions without thermal derating or brightness loss. |
| Automotive Head-Up Display (HUD) | High-End Automotive Rear Seat Entertainment |
Use Scenario: Projection-based HUD requiring ultra-fast dimming updates to avoid motion artifacts. IC Role / Device Role / Timing Role: Timing-critical scan controller implementing black insertion and VRR synchronization with projection engine. Use Value: Reduces perceived motion blur by >40% compared to fixed-refresh systems, meeting OEM HUD responsiveness targets. |
Use Scenario: Dual-screen rear-seat system with independent local dimming for passenger-specific content. IC Role / Device Role / Timing Role: Cascadable controller enabling up to 1024-device networks for multi-zone, multi-display architectures. Use Value: Supports scalable backlight partitioning without additional host processing overhead or interconnect complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar scan MOSFET controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69650QPWPRQ1 | Same electrical specs but HTSSOP-28 package (9.7mm × 4.4mm); higher MSL level (Level-3 vs Level-1); no wettable flanks. | Better suited for manual rework or legacy board designs with larger pad spacing; less optimal for AOI and thermal performance. | Select when board layout constraints favor leaded packages or thermal pad soldering is not feasible. |
| TLC69660QRTWRQ1 | Higher channel current rating (60mA vs 30mA) at same 50V rating; identical WQFN-24 package and pinout. | Required for LED strings drawing >30mA per channel; otherwise over-spec'd for standard local dimming loads. | Select only when peak current demand exceeds 30mA per string; otherwise TLC69650QRTWRQ1 offers optimal cost/power balance. |
Compared with TLC69650QPWPRQ1, the TLC69650QRTWRQ1 offers superior thermal management and automated assembly compatibility via wettable flanks, while TLC69660QRTWRQ1 trades off efficiency for higher current headroom - making TLC69650QRTWRQ1 the optimal choice for 30mA-class automotive local dimming systems requiring AEC-Q100 Grade 1 reliability and functional safety support.
Availability
TLC69650QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central information displays, instrument clusters, and head-up displays requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for TLC69650QRTWRQ1 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 specializing in analog, embedded processing, and automotive-grade ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The TLC696x0-Q1 product line was engineered specifically for high-reliability automotive LCD backlight control, emphasizing functional safety readiness, EMI resilience, and seamless integration with TI's current-sink driver portfolio (TLC696x2/4/8-Q1).
FAQ
What is the maximum number of TLC69650QRTWRQ1 devices that can be cascaded in a daisy-chain configuration?
The TLC69650QRTWRQ1 supports up to 1024 devices in a single daisy chain, as confirmed in the official datasheet Features section. This scalability enables full-array local dimming for large-format automotive displays without requiring additional host-side address decoding or parallel interfaces. Each TLC69650QRTWRQ1 handles 16 constant-current sinks and eight gate drivers, and the high-speed 20MHz interface ensures minimal latency across the entire chain.
Does the TLC69650QRTWRQ1 support both UART and two-wire diagnostic readback simultaneously?
No - the TLC69650QRTWRQ1 supports UART + INT or CLK_O + SOUT diagnostic readback modes, selected via configuration register. Both modes report LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). The two-wire option eliminates UART resource usage on the host MCU, while UART provides richer diagnostic framing and easier integration with existing firmware stacks.
What is the purpose of the FB pin in the TLC69650QRTWRQ1, and how should it be connected?
The FB pin implements adaptive headroom voltage control: only the FB pin of the last device in the daisy chain connects to the feedback node of the external DC/DC converter. This allows the system to regulate output voltage precisely to the minimum required for the dimmed LED strings, reducing power loss and heat generation. All upstream devices leave FB unconnected per datasheet guidance.
Is the TLC69650QRTWRQ1 pin-compatible with other members of the TLC696x0-Q1 family?
Yes - all TLC696x0-Q1 variants (TLC69600/10/50/60-Q1) share identical WQFN-24 (RTW) and HTSSOP-28 (PWP) pinouts and register maps. The TLC69650QRTWRQ1 differs electrically only in its 30mA/50V channel rating; software and layout are fully reusable across the family, simplifying design reuse and qualification across multiple brightness tiers.
How does the ghost-cancellation function in the TLC69650QRTWRQ1 improve display image quality?
The ghost-cancellation function eliminates upside ghosting by precisely aligning the turn-on timing of P-MOSFET gate drivers (G0–G7) with the activation of current sinks (D0–D7) in time-multiplexed scanning. This prevents residual charge accumulation on LED strings during transition phases, ensuring clean black-level reproduction and eliminating vertical smearing artifacts common in high-contrast automotive display scenes.
TLC69650QRTWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- -
- 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:
- Yes
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69650QRTWRQ1 FAQ
1.How can I place an order for TLC69650QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69650QRTWRQ1 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 TLC69650QRTWRQ1 reliable?
The price and inventory of TLC69650QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69650QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69650QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69650QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69650QRTWRQ1?
TLC69650QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69650QRTWRQ1 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 TLC69650QRTWRQ1?
For technical support, including TLC69650QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69650QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69650QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69650QRTWRQ1 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 TLC69650QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69650QRTWRQ1?
All TLC69650QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69650QRTWRQ1, 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 TLC69650QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69650QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69650QRTWRQ1 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
