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Texas Instruments TLC69652YBHR
- Part No.:
- TLC69652YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69652YBHR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69652YBHR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, supporting 2/4/8 time-multiplexing. It delivers 30mA per channel at up to 50V compliance voltage, with ±2% device-to-device and channel-to-channel current matching, and operates from 3V to 5.5V supply. It enables high-contrast, low-power displays in premium TVs and monitors.
For engineers reviewing the TLC69652YBHR datasheet, TLC69652YBHR pinout, TLC69652YBHR application, or TLC69652YBHR equivalent, key selection criteria include its 50V output capability, adaptive headroom voltage control (AHVC), 15-bit brightness resolution, UART/interrupt or two-wire diagnostic readback, and DSBGA-24 package compatibility with high-density PCB layouts.
Technical Context
The TLC69652YBHR implements a daisy-chainable two-wire serial interface (CLK_I/SIN/SOUT/CLK_O) supporting up to 20MHz data rates and 1.8V/3.3V I/O compatibility. It integrates SRAM per channel for independent brightness storage and supports hybrid PWM/global current control modes.
Its adaptive headroom voltage control (AHVC) dynamically adjusts the VLED supply by monitoring the FB pin of the last device in chain, minimizing power loss across the LED string. Diagnostics include per-zone LED open/short detection and thermal shutdown reporting via programmable UART/INT or SOUT/CLK_O outputs.
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 at up to 50V compliance - supports high-Vf LED strings without external boost |
| Current Matching Accuracy | ±2% device-to-device and channel-to-channel - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit - enables ultra-fine grayscale control for HDR display fidelity |
| Supply Voltage Range | 3V to 5.5V - compatible with standard logic rails and low-power system designs |
| Standby Current | ≤200μA - minimizes system power during display sleep or black-frame insertion |
| Daisy-Chain Interface | 2-wire serial (CLK_I/SIN/SOUT/CLK_O) at up to 20MHz - enables scalable multi-chip configurations with minimal routing |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm, 0.4mm pitch, ball grid array with exposed thermal pad (Ball 25). Compliant with JEDEC MO-277, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for internal logic and gate drivers |
| GND | Ground reference | Common return for analog/digital circuits and current sinks |
| CLK_I | Input clock | Accepts master clock for synchronous daisy-chain timing |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Passes unmodified data downstream; used for diagnostic readback in two-wire mode |
| CLK_O | Output clock | Drives clock signal to next device in chain; synchronized to CLK_I |
| FB | Feedback input | Connects only to last device's FB to regulate VLED via external DC/DC converter |
| INT | Interrupt output | Active-low open-drain flag for LOD/LSD/TSD events when UART mode disabled |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks driving LED cathodes; each supports 50V compliance |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces VLED overhead by dynamically tracking minimum required voltage across all 16 channels, cutting system power loss by up to 30% vs fixed-headroom designs |
| Programmable Black Insertion | Inserts precise black frames between video frames to eliminate motion blur without requiring panel-level changes |
| Variable Refresh Rate (VRR) Support | Maintains flicker-free operation during dynamic frame rate switching (e.g., gaming), preserving local dimming integrity |
| Per-Zone LED Fault Detection | Identifies open-circuit or short-circuit conditions on each of 16 outputs independently, enabling graceful degradation instead of full backlight failure |
| Two Diagnostic Readback Modes | UART + INT pin or SOUT/CLK_O dual-wire reporting - allows flexible integration with host MCU resources and debug infrastructure |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K LCD TV with >1000 local dimming zones using daisy-chained TLC69652YBHR arrays. IC Role / Device Role / Timing Role: Primary constant-current sink driver managing 16 LED zones per chip; synchronizes brightness updates across all devices via daisy-chain clock propagation. Use Value: Enables >1,000,000:1 contrast ratio through precise per-zone current control and sub-frame black insertion - critical for Dolby Vision certification. | Use Scenario: Professional-grade color-accurate monitor with flicker-free VRR support for creative workflows. IC Role / Device Role / Timing Role: Local dimming controller interfacing with host GPU via I²C-to-serial bridge; handles real-time brightness scaling during frame-rate transitions. Use Value: Eliminates visible flicker during 48–144Hz VRR operation while maintaining consistent black levels - verified per VESA DisplayHDR True Black 600 requirements. |
| Notebook Edge-Lit Backlight | Tablet Adaptive Brightness System |
Use Scenario: Thin-bezel ultrabook with edge-lit LCD using time-multiplexed 4× TLC69652YBHR for 64-zone control. IC Role / Device Role / Timing Role: Time-multiplexed LED driver operating in 4× mode; reduces effective channel count per update cycle to extend PWM resolution. Use Value: Achieves 15-bit effective brightness depth within tight thermal envelope (<1.2W total driver power), enabling HDR content playback on battery. | Use Scenario: 10-inch tablet with ambient light-adaptive local dimming and touch-induced brightness ramping. IC Role / Device Role / Timing Role: Low-latency backlight controller responding to ALS and touch events via interrupt-driven INT pin; updates zones in <1ms. Use Value: Reduces perceived brightness transition latency by 70% vs software-polling methods - eliminates visual "stutter" during rapid UI navigation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69652RTWR | Same electrical specs but WQFN-24 (4mm × 4mm) package; higher thermal resistance (θJA = 42°C/W vs DSBGA's 68°C/W) | Better suited for prototyping or lower-density boards where reflow yield favors QFN over DSBGA | Select TLC69652RTWR if board assembly uses standard QFN reflow profiles and thermal margin exceeds 15°C |
| TLC69654YBHR | 60mA/50V output capability (vs 30mA); identical pinout, register map, and package | Required for high-brightness zones or longer LED strings needing >30mA drive | Choose TLC69654YBHR only when peak current demand exceeds 30mA - avoids unnecessary thermal derating in 30mA designs |
Compared with TLC69652RTWR, the TLC69652YBHR offers superior thermal performance in space-constrained layouts, while TLC69654YBHR provides higher current headroom without changing layout - making TLC69652YBHR optimal for cost- and size-sensitive 30mA local dimming systems.
Availability
TLC69652YBHR is available at Aetrix Electronics and suitable for TV backlight modules, professional monitor designs, and notebook edge-lit displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLC69652YBHR 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 and embedded processing solutions, with over 90 years of innovation in power management, signal chain, and interface technologies.
The TLC696x2/4/8 product line was engineered specifically for high-fidelity LCD local dimming systems, targeting >1000-zone architectures with minimal inter-chip skew, ultra-low latency diagnostics, and adaptive power optimization.
FAQ
What is the maximum number of TLC69652YBHR devices that can be daisy-chained?
The TLC69652YBHR 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 deterministic 2-wire serial timing and automatic address propagation - no external addressing logic is required. Each TLC69652YBHR retains full 15-bit brightness resolution regardless of chain length.
Does the TLC69652YBHR require an external DC/DC converter for VLED supply?
Yes, the TLC69652YBHR requires an external DC/DC converter to generate VLED. Its adaptive headroom voltage control (AHVC) function uses the FB pin - connected only from the last device in the daisy chain - to dynamically adjust the VLED output voltage, minimizing power loss. The device itself does not integrate a switching regulator.
How does the TLC69652YBHR handle LED fault detection and reporting?
The TLC69652YBHR performs per-channel LED open and short detection continuously during operation. Fault status is reported either via the dedicated INT pin (active-low, open-drain) or through the SOUT/CLK_O two-wire interface, depending on register configuration. Thermal shutdown detection is also included, and all three flags (LOD, LSD, TSD) can be read back individually.
Can the TLC69652YBHR operate in both PWM-only and hybrid dimming modes?
Yes, the TLC69652YBHR supports both pure PWM dimming and hybrid mode - combining global 8-bit maximum current (MC) setting with per-channel PWM duty cycle control. Hybrid mode extends effective resolution beyond 15 bits while reducing EMI compared to high-frequency PWM alone, and is selected via configuration registers.
What is the thermal performance difference between TLC69652YBHR and TLC69652RTWR?
The TLC69652YBHR (DSBGA-24) has a junction-to-ambient thermal resistance (θJA) of 68°C/W under standard JEDEC 2S2P test conditions, while the TLC69652RTWR (WQFN-24) measures 42°C/W. Although the WQFN exhibits lower θJA, the DSBGA's smaller footprint (1.58mm × 2.43mm vs 4mm × 4mm) enables higher board density and better thermal coupling to inner-layer copper planes in optimized layouts - making TLC69652YBHR preferable for compact, thermally constrained designs.
TLC69652YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-BGA, DSBGA
- 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:
- 50V
- 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-DSBGA (1.58x2.43)
TLC69652YBHR FAQ
1.How can I place an order for TLC69652YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69652YBHR 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 TLC69652YBHR reliable?
The price and inventory of TLC69652YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69652YBHR is usually 5 days.
3.What payment methods are accepted for TLC69652YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69652YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69652YBHR?
TLC69652YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69652YBHR 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 TLC69652YBHR?
For technical support, including TLC69652YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69652YBHR requirements.
6.How does Aetrix verify that TLC69652YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69652YBHR 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 TLC69652YBHR meets industry standards.
7.What is the process for return or replacement of TLC69652YBHR?
All TLC69652YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69652YBHR, 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 TLC69652YBHR part is unused and in its original packaging.
Return procedure for TLC69652YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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