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Texas Instruments TLC69618YBHR
- Part No.:
- TLC69618YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69618YBHR.pdf
- Description:
- 128 MINI-LED MATRIX LOCAL DIMMIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69618YBHR from Texas Instruments is a 16-channel, 8-time-multiplexing local dimming LED driver for LCD backlight systems, delivering 60mA per channel at up to 50V output compliance, ±2% device-to-device current accuracy, and 15-bit brightness resolution. It supports daisy-chained operation across >32,000 zones in TV, monitor, and notebook displays.
For engineers reviewing the TLC69618YBHR datasheet, TLC69618YBHR pinout, TLC69618YBHR application, or TLC69618YBHR equivalent, key selection criteria include its 60mA/50V constant-current capability, adaptive headroom voltage control (AHVC), UART/interrupt and two-wire diagnostic readback, and DSBGA-24 package with 1.58mm × 2.43mm footprint for high-density backlight modules.
Technical Context
The TLC69618YBHR implements time-multiplexed local dimming using internal SRAM per channel for brightness storage and supports 2/4/8× multiplexing via external TLC696x0 scan controller. Its daisy-chain interface operates at up to 20MHz with 1.8V/3.3V I/O compatibility and integrated 4-phase-shifting for EMI reduction.
Diagnostics include per-zone LED open/short detection and thermal shutdown, with configurable reporting via UART/INT or CLK_O/SOUT outputs. Adaptive headroom voltage control directly interfaces with DC/DC converters through a single FB pin from the last device in chain, simplifying system layout and improving efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks for independent LED zone control |
| Max Output Current / Voltage | 60mA per channel at up to 50V - enables high-brightness, high-Vf LED strings |
| Current Accuracy | ±2% device-to-device and channel-to-channel error - ensures uniform luminance across zones |
| Brightness Resolution | Up to 15-bit PWM/hybrid dimming - supports deep black levels and smooth gradation |
| Data Rate | Up to 20MHz daisy-chain serial interface - reduces update latency for VRR and black insertion |
| Supply Voltage | 3V to 5.5V VCC - compatible with standard logic and power rails |
| Quiescent Current | ≤200μA standby, ≤3.5mA normal mode - minimizes system power overhead |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm body size, 0.4mm pitch, SNAGCU ball finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and driver circuitry |
| GND | Ground reference | Common return path for all analog/digital functions |
| 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 | Drives downstream device in daisy chain; supports diagnostic readback |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for two-wire diagnostics |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for AHVC loop control |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks driving LED cathodes; each supports 60mA/50V |
| INT | Interrupt output | Active-low signal indicating LOD/LSD/TSD fault events |
| UART_TX/RX | Diagnostic interface | Configurable UART pins for register-based fault reporting and configuration |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting VLED supply to minimum required headroom across all active zones |
| Programmable Black Insertion | Inserts precise dark frames between refresh cycles to enhance contrast ratio without motion blur |
| Variable Refresh Rate (VRR) Support | Maintains flicker-free dimming during dynamic frame rate changes in gaming and video applications |
| Per-Zone LED Diagnostics | Detects open-circuit and short-circuit faults on each of 16 channels with dedicated flag reporting |
| Two-Wire Diagnostic Readback | Enables fault status retrieval via CLK_O/SOUT pins-eliminates need for extra UART lines in space-constrained layouts |
Applications
| TV Backlight Systems | Monitor Backlight Systems |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs requiring >1000 local dimming zones for HDR content rendering. IC Role / Device Role / Timing Role: Primary constant-current LED driver in daisy-chained architecture, coordinated with TLC696x0 scan controller for 8× time-multiplexing. Use Value: Enables 60mA/50V drive capability per zone to support high-luminance edge-lit and full-array backlights with minimal thermal derating. | Use Scenario: Professional-grade monitors with wide color gamut and factory-calibrated gamma, demanding precise per-zone luminance uniformity. IC Role / Device Role / Timing Role: Local dimming controller managing 16 LED zones per IC, synchronized via 20MHz daisy chain for sub-1ms brightness updates. Use Value: ±2% channel-to-channel current matching ensures consistent brightness across zones, critical for grayscale fidelity and Delta-E accuracy. |
| Notebook Display Backlight | Tablet Display Backlight |
Use Scenario: Thin-bezel ultrabooks where mechanical depth constraints limit heat dissipation and board area. IC Role / Device Role / Timing Role: Compact DSBGA-24 LED driver enabling high-density zone layout with minimal PCB footprint and thermal mass. Use Value: 1.58mm × 2.43mm package and ≤200μA standby current reduce system-level power and space requirements without sacrificing dimming resolution. | Use Scenario: Portable tablets requiring battery-efficient HDR display with adaptive brightness and low-power UI modes. IC Role / Device Role / Timing Role: Power-optimized local dimming node supporting hybrid (PWM + analog) dimming and black insertion for extended battery life. Use Value: AHVC and ≤3.5mA normal-mode ICC lower average power draw during video playback while maintaining 15-bit luminance precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69618RTWR | Same electrical specs but in WQFN-24 (4mm × 4mm) package with NIPDAU finish and different thermal pad layout | Better thermal performance in convection-cooled designs; requires larger PCB area and different stencil design | Select when thermal management priority outweighs board space constraints |
| TLC69614YBHR | Identical DSBGA-24 package and pinout, but rated for 30mA/50V output instead of 60mA/50V | Lower power density; suitable for mid-brightness panels or designs with relaxed thermal margins | Select when 30mA per channel suffices and cost optimization is critical |
Compared with TLC69618RTWR and TLC69614YBHR, the TLC69618YBHR uniquely combines 60mA/50V drive strength with the smallest available footprint (DSBGA-24), making it optimal for ultra-thin, high-luminance LCD backlight modules where both power density and board area are constrained.
Availability
TLC69618YBHR is available at Aetrix Electronics and suitable for TV, monitor, and notebook backlight systems requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.
Supply support for TLC69618YBHR 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 display solutions.
The TLC696x2/4/8 product line was designed specifically for high-channel-count LCD local dimming applications, integrating precision current control, multiplexing coordination, and advanced diagnostics to enable next-generation HDR displays.
FAQ
What is the maximum output voltage compliance of the TLC69618YBHR?
The TLC69618YBHR supports up to 50V output voltage compliance per channel, allowing direct drive of high-forward-voltage LED strings without external boost stages. This specification is confirmed in the device family datasheet under "Maximum output current / voltage" for the TLC6966x series, with TLC69618YBHR explicitly designated as the 60mA/50V variant. The 50V rating applies across the full operating temperature range of –40°C to +85°C.
Does the TLC69618YBHR support daisy-chain configuration with other TLC696x devices?
Yes, the TLC69618YBHR supports daisy-chain topology using its dedicated CLK_I, SIN, SOUT, and CLK_O pins. Up to 1024 devices can be chained to manage more than 32,000 local dimming zones. Each device passes configuration data downstream via SIN→SOUT and clocks via CLK_I→CLK_O, with only the final device's FB pin connected to the DC/DC converter for adaptive headroom control.
How does the adaptive headroom voltage control (AHVC) function in the TLC69618YBHR?
The TLC69618YBHR implements AHVC by monitoring the highest forward voltage among active LED zones and feeding that information back via the FB pin to the system DC/DC converter. This allows the supply rail to track the minimum required headroom dynamically, reducing power loss and heat generation. Only the FB pin of the last device in the daisy chain is used-no additional routing or sensing is needed.
What diagnostic capabilities does the TLC69618YBHR provide for LED fault detection?
The TLC69618YBHR provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). Fault status is reported either through the dedicated INT pin (active-low pulse) or via UART/INT interface and two-wire CLK_O/SOUT readback. All three flags are independently latched and readable via register access, enabling precise root-cause identification in field-deployed systems.
Is the TLC69618YBHR pin-compatible with other variants in the TLC696x2/4/8 family?
Yes, the TLC69618YBHR shares identical pinout and package (DSBGA-24, YBH) with all other YBHR-suffixed variants including TLC69602YBHR through TLC69668YBHR. This allows drop-in replacement across current/voltage grades (e.g., 30mA/20V to 60mA/50V) without PCB redesign. Functional differences are limited to internal current-setting and voltage compliance-no pin reassignment or interface change is required.
TLC69618YBHR 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):
- -
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- 60mA
- 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)
TLC69618YBHR FAQ
1.How can I place an order for TLC69618YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69618YBHR 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 TLC69618YBHR reliable?
The price and inventory of TLC69618YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69618YBHR is usually 5 days.
3.What payment methods are accepted for TLC69618YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69618YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69618YBHR?
TLC69618YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69618YBHR 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 TLC69618YBHR?
For technical support, including TLC69618YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69618YBHR requirements.
6.How does Aetrix verify that TLC69618YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69618YBHR 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 TLC69618YBHR meets industry standards.
7.What is the process for return or replacement of TLC69618YBHR?
All TLC69618YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69618YBHR, 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 TLC69618YBHR part is unused and in its original packaging.
Return procedure for TLC69618YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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