My Inquiry
My Account
Texas Instruments TLC69608RTWR
- Part No.:
- TLC69608RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69608RTWR.pdf
- Description:
- 128 MINI-LED MATRIX LOCAL DIMMIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC69608RTWR from Texas Instruments is a 16-channel constant-current LED driver IC for LCD local dimming backlight systems, supporting 8-time multiplexing, 30mA per channel at up to 20V output compliance, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution in hybrid PWM control mode.
For engineers reviewing the TLC69608RTWR datasheet, TLC69608RTWR pinout, TLC69608RTWR application, or TLC69608RTWR equivalent, key selection considerations include adaptive headroom voltage control (AHVC) integration with DC/DC feedback, UART/interrupt and two-wire (CLK_O/SOUT) diagnostic reporting, and daisy-chainable 20MHz serial interface compatible with 1.8V/3.3V I/O levels.
Technical Context
The TLC69608RTWR implements time-multiplexed local dimming control using internal SRAM per channel for brightness storage and supports up to 1024 devices in daisy chain for >32,000 zones. It integrates adaptive headroom voltage control (AHVC) that directly regulates external DC/DC via FB pin from the last device in chain.
Diagnostics include per-zone LED open/short detection (LOD/LSD) and thermal shutdown (TSD), with readback configurable via UART/INT or CLK_O/SOUT two-wire output. Black insertion, variable refresh rate (VRR), and minimum brightness update latency are implemented to suppress flicker and improve display quality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - Supports standard logic-supply rails and enables direct connection to 3.3V or 5V system power domains. |
| Max Output Current / Voltage | 30mA / 20V - Delivers precise current to LED strings with sufficient headroom for common LCD backlight forward voltages. |
| Current Matching Accuracy | ±2% (typ.) device-to-device and channel-to-channel - Ensures uniform luminance across dimming zones without per-channel calibration. |
| Brightness Resolution | Up to 15-bit - Enables fine-grained dimming control essential for high-dynamic-range (HDR) display performance. |
| Data Transfer Rate | Up to 20MHz - Allows rapid configuration and brightness updates across large daisy-chained arrays with minimal latency. |
| Standby Current | ≤200μA - Minimizes system power during display idle or sleep states, critical for energy-efficient designs. |
| Diagnostic Reporting | UART/INT or CLK_O/SOUT - Provides flexible fault visibility: UART enables full register access; two-wire option reduces pin count and routing complexity. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, 0.5mm pitch, exposed thermal pad (Pin 25), moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Supplies core logic and output drivers; decoupling required near pin for noise immunity. |
| GND | Ground reference | Common return for analog/digital circuits; must be low-impedance and tied to exposed thermal pad. |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain data synchronization; supports 1.8V/3.3V logic levels. |
| SIN | Serial data input | Receives command and brightness data from upstream device or controller. |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback in two-wire mode. |
| CLK_O | Serial clock output | Passes synchronized clock to next device; doubles as diagnostic signal in two-wire reporting mode. |
| FB | DC/DC feedback input | Connects only to last device's FB pin to enable system-level AHVC; simplifies layout and eliminates per-device sensing. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events; requires external pull-up. |
| OUT0–OUT15 | Constant-current sinks | 16 high-precision current outputs; each drives one LED string or zone in local dimming architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates external DC/DC converter via single FB pin on final device-reduces component count and improves system efficiency by minimizing voltage overhead. |
| Programmable Black Insertion & VRR Support | Enables flicker-free dynamic refresh rate switching and motion blur reduction without requiring host processor intervention or frame buffer changes. |
| Dual Diagnostic Readback Modes | UART/INT provides full register visibility and error logging; CLK_O/SOUT offers minimal-pin-count alternative for basic fault flagging and zone status. |
| 4-Phase Shifting EMI Reduction | Internally staggers output switching across four groups to lower peak radiated emissions-reduces need for external filtering and eases EMC certification. |
| Minimum Brightness Update Latency | Guarantees sub-frame timing response for real-time HDR metadata-driven dimming updates-critical for Dolby Vision and similar standards. |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs implementing zone-based HDR rendering with >1000 dimming zones. IC Role / Device Role / Timing Role: Primary local dimming driver managing 16 LED strings per IC, daisy-chained to scale to full-panel coverage. Use Value: Enables contrast ratios >1,000,000:1 through precise per-zone current control and VRR-synchronized dimming updates. | Use Scenario: Professional-grade monitors requiring uniform luminance, low flicker, and wide color gamut support. IC Role / Device Role / Timing Role: Constant-current sink array delivering stable brightness across viewing angles and ambient conditions. Use Value: Eliminates backlight clouding and banding via ±2% current matching and black insertion for motion clarity. |
| Notebook Display Backlight | Tablet HDR Panel Driver |
Use Scenario: Thin-bezel ultrabooks with edge-lit or mini-LED backlights requiring low-power, compact dimming solutions. IC Role / Device Role / Timing Role: Integrated 16-channel driver with standby current ≤200μA and WQFN-24 package footprint. Use Value: Extends battery life while maintaining HDR performance via 15-bit dimming resolution and AHVC efficiency gains. | Use Scenario: Premium tablets using local dimming for immersive media consumption with adaptive brightness and ambient light response. IC Role / Device Role / Timing Role: Zone controller interfacing with display processor over 20MHz daisy chain for real-time metadata processing. Use Value: Achieves flicker-free VRR operation and seamless brightness transitions using programmable update latency and hybrid PWM control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69604RTWR | Same 16-channel, 30mA/20V architecture but supports 4-time multiplexing instead of 8-time; identical pinout and package. | Targeted at mid-tier displays with fewer dimming zones; lower daisy-chain scalability (max ~16,000 zones vs. >32,000). | Select when system-level zone count and multiplexing depth requirements are reduced-no PCB change needed. |
| TLC69608YBHR | Functionally identical to TLC69608RTWR but in DSBGA-24 (1.58mm × 2.43mm) package with SNAGCU finish and different tape-and-reel orientation (Q1 vs. Q2). | Used where ultra-compact board area or specific thermal profile (e.g., direct die attach) is prioritized over WQFN manufacturability. | Choose for space-constrained mobile designs; verify stencil design and reflow profile compatibility with YBH package. |
Compared with TLC69604RTWR and TLC69608YBHR, the TLC69608RTWR uniquely delivers 8-time multiplexing in a production-ready WQFN package with NIPDAU finish and Q2 tape orientation-making it optimal for scalable, high-zone-count TV and monitor applications requiring robust manufacturability and thermal performance.
Availability
TLC69608RTWR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and notebook HDR display implementations requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TLC69608RTWR 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, embedded processing, and digital signal technologies with over 90 years of innovation in power management and precision analog solutions.
The TLC696x2/4/8 product line was engineered specifically for high-fidelity LCD local dimming in consumer and professional displays-emphasizing current accuracy, daisy-chain scalability, diagnostic integrity, and system-level efficiency via AHVC.
FAQ
What is the maximum number of TLC69608RTWR devices supported in a daisy chain?
The TLC69608RTWR supports up to 1024 devices in a daisy chain topology, enabling control of more than 32,000 local dimming zones. This scalability is achieved through its high-speed 20MHz two-wire serial interface and deterministic latency per device, making it suitable for ultra-high-resolution displays such as 8K TVs and commercial digital signage panels. Each TLC69608RTWR contributes 16 independently controllable channels to the overall system.
Does the TLC69608RTWR require external current-setting resistors?
No, the TLC69608RTWR does not require external current-setting resistors. It integrates 16 matched, factory-trimmed constant-current sinks with a typical output current of 30mA per channel at up to 20V compliance. Current magnitude is digitally controlled via global 8-bit maximum current (MC) setting and per-channel 15-bit brightness registers-eliminating component variation and board space associated with discrete resistor networks. The TLC69608RTWR achieves ±2% device-to-device and channel-to-channel matching without calibration.
How does Adaptive Headroom Voltage Control (AHVC) function in the TLC69608RTWR?
AHVC in the TLC69608RTWR dynamically adjusts the output voltage of an external DC/DC converter to maintain minimal headroom above the highest forward voltage among active LED strings. Only the FB pin of the last TLC69608RTWR in the daisy chain connects to the DC/DC feedback node-enabling system-wide regulation without per-device sensing. This reduces power loss, heat generation, and EMI while simplifying PCB layout. AHVC operates continuously during normal mode and is disabled in standby.
What diagnostic capabilities does the TLC69608RTWR provide, and how are they reported?
The TLC69608RTWR provides per-zone LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These diagnostics are reported via two configurable interfaces: (1) UART + INT pin for full register access and event logging, or (2) CLK_O + SOUT two-wire output for compact fault-flagging. The INT pin asserts low on any detected fault; UART allows reading individual zone status, while CLK_O/SOUT encodes error type and location in pulse-width or frequency-modulated format.
Is the TLC69608RTWR pin-compatible with other members of the TLC696x2/4/8 family?
Yes, the TLC69608RTWR is pin-compatible with all WQFN-24 variants in the TLC696x2/4/8 family-including TLC69602RTWR, TLC69604RTWR, TLC69612RTWR, and TLC69652RTWR-sharing identical RTW package dimensions, pinout, thermal pad configuration, and electrical interface. Functional differences (e.g., multiplexing ratio, current rating, voltage compliance) are determined by internal configuration and part marking, not physical layout. This enables drop-in replacement during design iteration or qualification without PCB revision.
TLC69608RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x8
- Package/Case:
- 24-WFQFN Exposed Pad
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69608RTWR FAQ
1.How can I place an order for TLC69608RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69608RTWR 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 TLC69608RTWR reliable?
The price and inventory of TLC69608RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69608RTWR is usually 5 days.
3.What payment methods are accepted for TLC69608RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69608RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69608RTWR?
TLC69608RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69608RTWR 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 TLC69608RTWR?
For technical support, including TLC69608RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69608RTWR requirements.
6.How does Aetrix verify that TLC69608RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69608RTWR 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 TLC69608RTWR meets industry standards.
7.What is the process for return or replacement of TLC69608RTWR?
All TLC69608RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69608RTWR, 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 TLC69608RTWR part is unused and in its original packaging.
Return procedure for TLC69608RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69608RTWR 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…
