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Texas Instruments TLC69602RTWR
- Part No.:
- TLC69602RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69602RTWR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:2,985
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Product details
Overview
TLC69602RTWR from Texas Instruments is a 16-channel constant-current LED driver IC for LCD local dimming backlight systems, supporting 2-time multiplexing with 30mA/20V per channel, ±2% device-to-device and channel-to-channel current matching, and adaptive headroom voltage control (AHVC) for DC/DC optimization in TV and monitor applications.
For engineers reviewing the TLC69602RTWR datasheet, TLC69602RTWR pinout, TLC69602RTWR application, or TLC69602RTWR equivalent, this page delivers verified technical context, real-world design implications of its 15-bit brightness resolution, UART/interrupt diagnostic reporting, daisy-chain interface up to 20MHz, and thermal shutdown detection - all critical for high-reliability display power architecture.
Technical Context
The TLC69602RTWR implements time-multiplexed local dimming via integrated 16-channel constant-current sinks, each programmable with global 8-bit maximum current (MC) setting and up to 15-bit PWM/hybrid dimming resolution. It operates within 3V–5.5V VCC and supports 2-time multiplexing only - distinct from TLC69604 (4×) and TLC69608 (8×).
Its daisy-chain two-wire serial interface (CLK_I/SIN → SOUT/CLK_O) enables scalable deployment across >32,000 zones using up to 1024 devices. AHVC dynamically adjusts FB voltage based on LED forward voltage, minimizing power loss while requiring connection of only the last device's FB pin to the DC/DC converter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - compatible with standard logic supply rails and tolerant of typical board-level voltage variation. |
| Output Current / Voltage | 30mA per channel, 20V compliance - sufficient to drive common white LED strings in 2× multiplexed local dimming zones. |
| Current Matching | ±2% device-to-device and channel-to-channel error (typ.) - ensures uniform luminance across dimming zones without per-channel calibration. |
| Brightness Resolution | Up to 15-bit - enables fine-grained contrast control and eliminates visible grayscale banding in HDR displays. |
| Data Rate | Up to 20MHz daisy-chain transfer - supports rapid zone updates required for variable refresh rate (VRR) and black insertion timing. |
| Power Consumption | ≤3.5mA in normal mode, ≤200μA in standby - reduces system-level thermal load and enables low-power display modes. |
| Diagnostic Reporting | LED open/short detection per zone + thermal shutdown, with UART/INT or SOUT/CLK_O readback - enables real-time fault isolation without host CPU overhead. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 0.5mm pitch, exposed thermal pad (Pin 25), moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail for internal logic and current sinks; decoupling required near pin. |
| GND | Ground reference | Common return for analog/digital circuits and current sink outputs; connects to exposed thermal pad. |
| CLK_I | Input clock | Accepts master clock from upstream device or controller; synchronizes daisy-chain data transfer. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller. |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports UART-style readback when configured. |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for two-wire diagnostic readback. |
| FB | Feedback input | Connects only on last device in chain to DC/DC converter; enables AHVC for dynamic headroom optimization. |
| OUT0–OUT15 | Constant-current sinks | 16 open-drain outputs; each drives one LED string segment in 2× time-multiplexed local dimming topology. |
| INT | Interrupt output | Active-low signal asserted on LOD/LSD/TSD fault; enables immediate host response without polling. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces DC/DC output voltage to minimum required for LED string forward drop, cutting system power loss by up to 30% vs fixed-headroom designs. |
| Programmable Black Insertion | Inserts precise dark frames between video frames to reduce motion blur - implemented in hardware without host intervention. |
| Variable Refresh Rate (VRR) Support | Maintains flicker-free dimming during dynamic frame-rate changes by synchronizing PWM timing to display controller VSYNC. |
| 4-Phase Shifting EMI Reduction | Staggered internal switching phases lower peak current harmonics, easing EMI filter design and passing CISPR-32 Class B limits. |
| Dual Diagnostic Readback Modes | UART/INT or SOUT/CLK_O selection allows flexible integration: UART for detailed logging, two-wire for minimal pin count and fast fault flagging. |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs implementing full-array local dimming with >1000 zones. IC Role / Device Role / Timing Role: Primary LED current sink driver in 2× time-multiplexed architecture, coordinated via daisy-chained serial interface. Use Value: Enables deep black levels and >1,000,000:1 contrast ratio through precise per-zone current control and black insertion timing. |
Use Scenario: Professional-grade monitors requiring flicker-free, VRR-compatible backlighting for creative workflows. IC Role / Device Role / Timing Role: Constant-current driver managing 16 independent backlight segments per IC, synchronized to GPU VSYNC signals. Use Value: Eliminates motion blur and backlight-induced judder while maintaining color accuracy across dynamic refresh rates (48–144Hz). |
| Notebook Display Backlight | Tablet HDR Backlighting |
Use Scenario: Thin-bezel ultrabooks with edge-lit or mini-LED backlights requiring low-power, high-precision dimming. IC Role / Device Role / Timing Role: Local dimming controller interfacing with embedded display controller over compact two-wire daisy chain. Use Value: Achieves >1000 nits peak brightness and battery-efficient HDR operation via 15-bit dimming resolution and ≤200μA standby current. |
Use Scenario: Premium tablets using mini-LED arrays for HDR content playback with adaptive tone mapping. IC Role / Device Role / Timing Role: Zone driver enabling per-frame brightness updates aligned with media decoder output timing. Use Value: Delivers perceptually accurate HDR gradation and minimizes latency-sensitive artifacts like ghosting during fast UI transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69604RTWR | Supports 4-time multiplexing (vs. 2× for TLC69602RTWR); identical package, pinout, and interface. | Enables higher zone density per IC in space-constrained designs where 4× time division is acceptable. | Select when system requires more than 16 physical LED strings per driver IC and can tolerate longer update latency per zone. |
| TLC69612RTWR | 60mA/20V output capability (vs. 30mA for TLC69602RTWR); same 2× multiplexing and feature set. | Drives higher-brightness or higher-VF LED strings without external boost stages. | Choose when LED forward voltage exceeds 20V at 30mA or when higher lumen output per zone is required. |
Compared with TLC69604RTWR and TLC69612RTWR, the TLC69602RTWR offers optimal balance of zone control precision, power efficiency, and thermal management for mainstream 2× multiplexed local dimming - making it ideal for cost-sensitive TV and monitor designs where 30mA/20V suffices.
Availability
TLC69602RTWR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and notebook display modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant WQFN packaging.
Supply support for TLC69602RTWR 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 power management technologies, with decades of display interface and LED driver innovation.
The TLC696x2/4/8 product line was engineered specifically for high-fidelity LCD local dimming in consumer and professional displays, emphasizing precision current matching, low-latency diagnostics, and system-level power optimization.
FAQ
What is the maximum number of TLC69602RTWR devices that can be daisy-chained?
The TLC69602RTWR supports daisy-chain topologies of up to 1024 devices, enabling control of more than 32,000 independent local dimming zones. This scalability is achieved through its dedicated CLK_I/SIN and SOUT/CLK_O interface, with propagation delay and timing margins validated across the full chain in TI's reference designs. Each TLC69602RTWR contributes 16 channels to the total zone count.
Does the TLC69602RTWR support both PWM and analog dimming modes?
The TLC69602RTWR implements hybrid dimming - combining global 8-bit maximum current (MC) setting with up to 15-bit PWM resolution. It does not support true analog (voltage-controlled) dimming. The MC register sets the per-channel current ceiling, while PWM determines duty cycle; together they deliver fine-grained luminance control without requiring external DACs or op-amps. This architecture is optimized for digital display controllers.
How does Adaptive Headroom Voltage Control (AHVC) function in the TLC69602RTWR?
AHVC in the TLC69602RTWR dynamically adjusts the DC/DC converter's output voltage by monitoring the highest forward voltage among active LED strings in the current time slot and adding minimal headroom. Only the FB pin of the final TLC69602RTWR in the daisy chain connects to the DC/DC feedback node - simplifying layout and reducing system power loss by up to 30% compared to fixed-headroom solutions.
What diagnostic functions does the TLC69602RTWR provide, and how are they reported?
The TLC69602RTWR provides per-zone LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults are reported either via dedicated INT pin assertion or through UART-style readback using SOUT/CLK_O - configurable via internal registers. No host polling is required for INT mode, enabling immediate system-level fault response in safety-critical display applications.
Is the TLC69602RTWR pin-compatible with other members of the TLC696x2/4/8 family?
Yes - all TLC696x2/4/8 variants in WQFN-24 (RTW) packaging, including TLC69602RTWR, TLC69604RTWR, and TLC69612RTWR, share identical pinout, package dimensions, and interface signaling. This allows direct PCB reuse across different multiplexing ratios (2×/4×/8×) and output current grades (30mA/60mA), provided firmware and system-level timing constraints are updated accordingly.
TLC69602RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x2
- 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)
TLC69602RTWR FAQ
1.How can I place an order for TLC69602RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69602RTWR 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 TLC69602RTWR reliable?
The price and inventory of TLC69602RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69602RTWR is usually 5 days.
3.What payment methods are accepted for TLC69602RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69602RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69602RTWR?
TLC69602RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69602RTWR 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 TLC69602RTWR?
For technical support, including TLC69602RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69602RTWR requirements.
6.How does Aetrix verify that TLC69602RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69602RTWR 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 TLC69602RTWR meets industry standards.
7.What is the process for return or replacement of TLC69602RTWR?
All TLC69602RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69602RTWR, 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 TLC69602RTWR part is unused and in its original packaging.
Return procedure for TLC69602RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69602RTWR Tags
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BCR420UE6433HTMA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
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