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Texas Instruments TLC69660YBHR
- Part No.:
- TLC69660YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69660YBHR.pdf
- Description:
- 8-SCAN MOSFET CONTROLLER 24-DSBG
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69660YBHR from Texas Instruments is a 24-pin DSBGA scan MOSFET controller for LCD local dimming backlight systems, delivering 60mA sustaining current at up to 50V per channel, supporting daisy-chain interface up to 20MHz, and integrating thermal shutdown, LED open/short detection, and programmable black insertion for display quality enhancement.
For engineers reviewing the TLC69660YBHR datasheet, TLC69660YBHR pinout, TLC69660YBHR application, or TLC69660YBHR equivalent, key selection criteria include its 60mA/50V P-MOSFET drive capability, 1.8V/3.3V I/O compatibility, adaptive headroom voltage control for DC/DC optimization, and dual diagnostic readback options (UART/INT or SOUT/CLK_O).
Technical Context
The TLC69660YBHR implements a 16-channel constant-current sink architecture synchronized with external TLC696x2/4/8 current-sink drivers to enable 2×/4×/8× time-multiplexed local dimming control. It integrates ghost-cancellation logic to eliminate upside ghosting in high-contrast displays.
Its adaptive headroom voltage control scheme directly regulates DC/DC converters via a single FB pin from the last device in the daisy chain, reducing layout complexity. Diagnostics include three independent error flags-LED open (LOD), LED short (LSD), and thermal shutdown (TSD)-with programmable readback via UART/INT or two-wire SOUT/CLK_O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - supports direct connection to standard logic rails without LDO overhead |
| Output Drive Capability | 60mA / 50V - enables driving higher-voltage P-MOSFETs for improved efficiency in large-panel backlights |
| Daisy-Chain Data Rate | Up to 20MHz - allows fast brightness updates across multi-device chains for flicker-free VRR operation |
| I/O Voltage Compatibility | 1.8V / 3.3V - interoperates with low-voltage microcontrollers and FPGAs without level-shifting |
| Thermal Protection | Integrated thermal shutdown detection - halts operation above safe junction temperature to prevent damage |
| Diagnostic Readback | UART + INT or SOUT + CLK_O - selectable interface for real-time fault reporting without additional bus resources |
| Package | DSBGA-24 (YBH), 1.58mm × 2.43mm - ultra-compact footprint for space-constrained display module designs |
Pinout & Package
DSBGA-24 package (YBH) with 0.4mm ball pitch, 1.58mm × 2.43mm body size, and exposed thermal pad (Ball 25). Compliant with JEDEC MO-277, MSL Level-1, 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for internal logic and interface drivers |
| GND | Ground reference | Common return path for all analog/digital circuits and thermal pad |
| CLK_I | Serial clock input | Accepts master clock for synchronous daisy-chain data transfer |
| SIN | Serial data input | Receives configuration and brightness data from upstream controller or host |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback |
| CLK_O | Serial clock output | Passes synchronized clock to next device; paired with SOUT for two-wire diagnostics |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for adaptive headroom control |
| INT | Interrupt output | Active-low open-drain signal indicating LOD/LSD/TSD fault events |
| G0–Gn | Gate drive outputs | 16 dedicated gate-control terminals for external P-MOSFETs (n = 15) |
| D0–Dn | Current sink outputs | 16 constant-current sinks tied to TLC696x2/4/8 drivers for LED string control |
Key Features
| Feature | Design Value |
|---|---|
| Programmable black insertion | Reduces motion blur by inserting controlled black frames without requiring frame buffer changes |
| Variable refresh rate (VRR) | Enables flicker-free dynamic refresh rate adjustment synchronized with content timing |
| Ghost-cancellation function | Eliminates visual artifacts caused by residual charge in high-contrast LCD transitions |
| Global + individual current control | 8-bit global max-current and per-channel 8-bit current setting enable precise dimming uniformity calibration |
| EMI-optimized interface drive | Configurable slew rate on SIN/SOUT/CLK_I/CLK_O reduces radiated emissions in dense PCB layouts |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-dynamic-range (HDR) television with zone-based backlight dimming across 100+ LED zones. IC Role / Device Role / Timing Role: Scan MOSFET controller coordinating gate timing and current sink sequencing for P-MOSFET arrays driving local dimming zones. Use Value: Enables 60mA/50V drive capability to support high-efficiency, high-voltage LED strings while maintaining sub-frame latency for real-time HDR tone mapping. | Use Scenario: Professional-grade monitor with flicker-free VRR and minimal motion blur for creative workflows. IC Role / Device Role / Timing Role: Timing-critical scan controller managing black insertion and variable refresh synchronization with GPU output. Use Value: Leverages programmable black insertion and VRR features to eliminate strobing artifacts without adding display pipeline latency. |
| Notebook Display Dimming | Tablet Adaptive Brightness |
Use Scenario: Thin-bezel notebook display requiring compact backlight driver solution with thermal-aware operation. IC Role / Device Role / Timing Role: Compact DSBGA-24 controller providing gate drive and current sink coordination for edge-lit LED arrays. Use Value: 1.58mm × 2.43mm DSBGA package minimizes PCB area; integrated thermal shutdown prevents overheating in thermally constrained chassis. | Use Scenario: Tablet with ambient-light-adaptive brightness and battery-life-optimized backlight efficiency. IC Role / Device Role / Timing Role: Low-power scan controller enabling dynamic current scaling and adaptive headroom control of DC/DC converter. Use Value: Adaptive headroom scheme reduces power loss in DC/DC stage by minimizing voltage overhead across varying LED forward voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar scan MOSFET controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69660RTWR | Same electrical specs; WQFN-24 (4mm × 4mm) package instead of DSBGA-24 | Better thermal dissipation and hand-solderability; larger footprint unsuitable for ultra-thin devices | Select when board-level thermal management or assembly process favors QFN over DSBGA |
| TLC69650YBHR | 30mA/50V drive (vs. 60mA/50V); identical pinout, package, and feature set | Limited to lower-current P-MOSFETs; insufficient for high-brightness or high-string-count panels | Select only if system current requirements stay ≤30mA per channel and cost optimization is prioritized |
Compared with TLC69660YBHR, TLC69660RTWR offers superior thermal performance in space-tolerant designs, while TLC69650YBHR provides a cost-optimized alternative where 30mA drive suffices-neither is pin-compatible with automotive-grade variants (e.g., TLC69660-Q1).
Availability
TLC69660YBHR is available at Aetrix Electronics and suitable for TV local dimming, monitor backlight control, notebook display dimming, and tablet adaptive brightness applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TLC69660YBHR 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 decades of leadership in display interface and power management ICs.
The TLC696x0 product line was designed specifically for high-fidelity LCD local dimming systems, targeting TV, monitor, and mobile display manufacturers needing precise, low-latency, and diagnostics-rich MOSFET scanning control.
FAQ
What is the maximum sustaining voltage and current capability of the TLC69660YBHR?
The TLC69660YBHR supports a maximum sustaining voltage of 50V and delivers up to 60mA per channel. This specification enables direct control of high-voltage P-MOSFETs used in large-panel LCD backlight systems. The 60mA/50V rating is confirmed in TI's official SNVSCJ8 datasheet and distinguishes TLC69660YBHR from lower-drive variants like TLC69650YBHR (30mA/50V) and TLC69610YBHR (60mA/20V). These values define the safe operating range for external MOSFET gate drive under continuous conditions.
Does the TLC69660YBHR support daisy-chaining, and what is the maximum data rate?
Yes, the TLC69660YBHR supports high-speed daisy chaining via dedicated CLK_I, SIN, SOUT, and CLK_O pins. Its serial interface operates at up to 20MHz, enabling rapid configuration and brightness updates across multi-device chains. This capability is essential for minimizing update latency in variable refresh rate (VRR) and black insertion applications. The interface is voltage-compatible with both 1.8V and 3.3V logic families, eliminating the need for external level shifters in mixed-voltage systems.
How does the adaptive headroom voltage control work in the TLC69660YBHR?
The TLC69660YBHR implements adaptive headroom voltage control by using its FB pin to regulate an external DC/DC converter. Only the FB pin of the last device in the daisy chain must be connected to the DC/DC feedback node, allowing the controller to dynamically adjust output voltage based on the highest forward voltage among driven LED strings. This reduces power loss and heat generation compared to fixed-headroom designs. The scheme is documented in the "Description" section of the SNVSCJ8 datasheet and requires no additional components beyond the standard DC/DC loop compensation network.
What diagnostic functions does the TLC69660YBHR provide, and how are they reported?
The TLC69660YBHR provides three hardware-monitored diagnostics: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). Fault status is reported through two configurable options: (1) UART communication plus active-low INT pin assertion, or (2) two-wire readback via SOUT and CLK_O signals. Both modes are register-programmable, allowing system designers to select the interface that best fits their MCU's peripheral availability and real-time response requirements. All diagnostics are detailed in Section 1 (Features) and Section 3 (Description) of the SNVSCJ8 datasheet.
Is the TLC69660YBHR pin-compatible with other members of the TLC696x0 family?
Yes, the TLC69660YBHR shares identical pinout and package dimensions with TLC69600YBHR, TLC69610YBHR, and TLC69650YBHR in the DSBGA-24 (YBH) variant. All four parts use the same 24-ball grid, identical ball assignment, and mechanical footprint, enabling drop-in replacement during design iteration or qualification. However, functional differences-including drive current (30mA vs. 60mA) and sustaining voltage (20V vs. 50V)-must be verified against system requirements. This compatibility is explicitly confirmed in TI's PACKAGE OUTLINE documentation and orderable addendum for YBH-packaged variants.
TLC69660YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-BGA, DSBGA
- 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:
- 60mA
- Frequency:
- -
- Dimming:
- No
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-DSBGA (1.58x2.43)
TLC69660YBHR FAQ
1.How can I place an order for TLC69660YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69660YBHR 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 TLC69660YBHR reliable?
The price and inventory of TLC69660YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69660YBHR is usually 5 days.
3.What payment methods are accepted for TLC69660YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69660YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69660YBHR?
TLC69660YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69660YBHR 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 TLC69660YBHR?
For technical support, including TLC69660YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69660YBHR requirements.
6.How does Aetrix verify that TLC69660YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69660YBHR 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 TLC69660YBHR meets industry standards.
7.What is the process for return or replacement of TLC69660YBHR?
All TLC69660YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69660YBHR, 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 TLC69660YBHR part is unused and in its original packaging.
Return procedure for TLC69660YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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