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Texas Instruments TLC69650YBHR
- Part No.:
- TLC69650YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69650YBHR.pdf
- Description:
- 8-SCAN MOSFET CONTROLLER 24-DSBG
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69650YBHR from Texas Instruments is a 24-pin DSBGA scan MOSFET controller for LCD local dimming backlight systems, delivering 30mA sustaining current at up to 50V per channel, supporting daisy-chained 16-channel constant-current sink drivers (TLC696x2/4/8), and integrating ghost-cancellation and adaptive headroom voltage control for DC/DC optimization.
For engineers reviewing the TLC69650YBHR datasheet, TLC69650YBHR pinout, TLC69650YBHR application, or TLC69650YBHR equivalent, this device is selected for high-precision LED backlight scanning in TV, monitor, and notebook displays requiring programmable black insertion, variable refresh rate (VRR), and thermal shutdown diagnostics with UART/INT or SOUT/CLK_O readback.
Technical Context
The TLC69650YBHR implements a 16-channel scan controller architecture that interfaces with external current-sink drivers (e.g., TLC696x2/4/8) to enable 2×, 4×, or 8× time-multiplexed LED backlight control. It features an 8-bit global maximum current register and individual 8-bit channel current registers for fine-grained brightness tuning.
Its high-speed daisy chain interface operates up to 20MHz with 1.8V/3.3V I/O compatibility, while integrated diagnostics include LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD), reported via programmable UART/INT or two-wire SOUT/CLK_O outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC range | 3V to 5.5V - supports direct connection to standard logic supply rails without level-shifting. |
| Sustaining voltage | 50V - enables driving high-Vf LED strings in large-panel local dimming zones. |
| Driving current | 30mA per channel - sufficient for gate drive of P-MOSFETs controlling up to 8 scan lines. |
| Data rate | Up to 20MHz - ensures sub-millisecond brightness update latency for flicker-free VRR operation. |
| Operating temperature | –40°C to +85°C - qualified for consumer and industrial display environments. |
| Package | DSBGA-24 (YBH), 1.58mm × 2.43mm - ultra-compact footprint ideal for space-constrained backlight driver PCBs. |
| Diagnostic outputs | UART + INT or SOUT + CLK_O - selectable reporting interface for real-time fault logging without additional MCU GPIO overhead. |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm body size, 0.4mm pitch, exposed thermal pad (Ball 25), RoHS-compliant SnAgCu ball finish, MSL Level-1.
| 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 for analog/digital domains; connects to exposed thermal pad for thermal dissipation. |
| CLK_I | Input clock | Accepts master clock signal (up to 20MHz) for synchronous daisy-chain data latching. |
| SIN | Serial data input | Receives configuration and brightness data from upstream controller or MCU. |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback in two-wire mode. |
| CLK_O | Output clock | Propagates synchronized clock to next device; paired with SOUT for diagnostic reporting. |
| FB | Feedback input | Connects only to FB of last device in chain to regulate DC/DC converter headroom voltage. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events when UART mode is disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Ghost-cancellation function | Eliminates upside ghosting artifacts in time-multiplexed LED scanning by synchronizing MOSFET turn-on/turn-off timing across channels. |
| Adaptive headroom control | Directly regulates DC/DC output voltage using single FB pin from last device-reduces power loss and heat generation in LED string supplies. |
| Programmable black insertion | Inserts precise black frames between refresh cycles to enhance contrast ratio and reduce motion blur in fast-moving video content. |
| Variable refresh rate (VRR) | Enables flicker-free dynamic frame rate adjustment without visible tearing or brightness discontinuity during gaming or video playback. |
| Minimum brightness update latency | Ensures <1ms brightness reconfiguration across all 16 channels-critical for HDR tone mapping and real-time local dimming response. |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
|
Use Scenario: High-dynamic-range (HDR) television with 1000+ local dimming zones requiring precise per-zone brightness control and flicker-free VRR support. IC Role / Device Role / Timing Role: Scan controller coordinating 8 P-MOSFETs per zone to enable 8× time-multiplexed driving of TLC696x8 current-sink drivers. Use Value: Enables 50V/30mA per channel sustain capability to drive high-Vf mini-LED strings while maintaining <1ms brightness update latency for real-time HDR metadata processing. |
Use Scenario: Professional-grade monitor with uniformity-critical edge-lit backlight and adaptive sync for creative workflows. IC Role / Device Role / Timing Role: Daisy-chained scan controller managing 4× multiplexed TLC696x4 drivers to reduce channel count and PCB routing complexity. Use Value: Leverages programmable black insertion and ghost-cancellation to eliminate vertical banding and improve grayscale fidelity in dark scenes. |
| Notebook Display Dimming | Tablet Backlight Management |
|
Use Scenario: Thin-bezel ultrabook display requiring compact backlight driver solution with thermal safety monitoring. IC Role / Device Role / Timing Role: Primary scan controller interfacing with TLC696x2 drivers for 2× time-multiplexed local dimming in narrow bezel form factor. Use Value: DSBGA-24 package (1.58mm × 2.43mm) minimizes board area; thermal shutdown detection (TSD) and LOD/LSD flags ensure robust field reliability. |
Use Scenario: Portable tablet with battery-sensitive backlight system needing low-power operation and EMI-optimized interface. IC Role / Device Role / Timing Role: Low-voltage scan controller operating from 3.3V rail, driving P-MOSFETs via configurable interface strength to reduce radiated emissions. Use Value: 1.8V/3.3V I/O compatibility and programmable driving capability minimize EMI in RF-sensitive handheld designs without external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar scan MOSFET controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69650RTWR | Same electrical specs but in 4mm × 4mm WQFN-24 package with NIPDAU finish and different thermal pad layout. | Better thermal performance in high-power density layouts; requires larger PCB footprint and different stencil design. | Select when board-level thermal management prioritizes conduction over space constraints. |
| TLC69660YBHR | Higher 60mA/50V driving capability; identical DSBGA-24 package, pinout, and feature set. | Supports higher gate charge MOSFETs or longer trace runs without compromising switching speed. | Choose when driving larger P-MOSFETs or extending daisy chain beyond 8 devices where higher current margin is required. |
Compared with TLC69650YBHR, TLC69650RTWR offers superior thermal dissipation in WQFN but occupies 4× more board area, while TLC69660YBHR provides 2× higher channel drive current in the same DSBGA footprint-making it suitable for upgraded MOSFET gate drive without layout revision.
Availability
TLC69650YBHR is available at Aetrix Electronics and suitable for TV local dimming, monitor backlight control, and notebook display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLC69650YBHR 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 digital signal processing technologies with over 90 years of innovation in power management and precision analog solutions.
The TLC696x0 family was designed specifically for high-fidelity LCD local dimming backlight systems, targeting TV, monitor, notebook, and tablet displays demanding low-latency brightness control, advanced diagnostics, and EMI-optimized daisy-chain communication.
FAQ
What is the primary function of the TLC69650YBHR in an LED backlight system?
The TLC69650YBHR serves as a scan MOSFET controller that coordinates time-multiplexed driving of external current-sink drivers (e.g., TLC696x2/4/8) to enable precise local dimming. It manages up to 8 P-MOSFETs per device, supports ghost-cancellation, adaptive headroom control, and delivers 30mA/50V per channel-making TLC69650YBHR essential for HDR-capable LCD backlight architectures.
Does the TLC69650YBHR support daisy-chaining, and what is its maximum data rate?
Yes, the TLC69650YBHR supports high-speed daisy chaining via SIN/CLK_I inputs and SOUT/CLK_O outputs, with a maximum data transfer rate of 20MHz. This enables sub-millisecond brightness updates across multiple devices-critical for minimizing latency in VRR and HDR applications where TLC69650YBHR is deployed in multi-zone backlight configurations.
How does the adaptive headroom control feature work in the TLC69650YBHR?
The TLC69650YBHR implements adaptive headroom control by regulating the DC/DC converter's output voltage through a single FB pin connection-only the last device in the daisy chain connects FB to the DC/DC feedback node. This simplifies layout, reduces power loss, and improves efficiency. The feature is integral to TLC69650YBHR's system-level power optimization in LED backlight designs.
What diagnostic capabilities does the TLC69650YBHR provide, and how are they reported?
The TLC69650YBHR integrates LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These faults are reported via two configurable options: UART + interrupt pin (INT) or two-wire SOUT + CLK_O. Configuration is register-based, allowing flexible integration into host MCU firmware-ensuring robust fault visibility in production TLC69650YBHR deployments.
Is the TLC69650YBHR pin-compatible with other members of the TLC696x0 family?
Yes, the TLC69650YBHR shares identical pinout, package dimensions, and interface protocol with TLC69600YBHR, TLC69610YBHR, and TLC69660YBHR in the DSBGA-24 (YBH) variant. This allows direct substitution within the same PCB layout when adjusting drive current (30mA vs. 60mA) or sustaining voltage (20V vs. 50V), provided firmware registers are updated to match the selected TLC69650YBHR variant's capabilities.
TLC69650YBHR 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:
- 30mA
- 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)
TLC69650YBHR FAQ
1.How can I place an order for TLC69650YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69650YBHR 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 TLC69650YBHR reliable?
The price and inventory of TLC69650YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69650YBHR is usually 5 days.
3.What payment methods are accepted for TLC69650YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69650YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69650YBHR?
TLC69650YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69650YBHR 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 TLC69650YBHR?
For technical support, including TLC69650YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69650YBHR requirements.
6.How does Aetrix verify that TLC69650YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69650YBHR 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 TLC69650YBHR meets industry standards.
7.What is the process for return or replacement of TLC69650YBHR?
All TLC69650YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69650YBHR, 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 TLC69650YBHR part is unused and in its original packaging.
Return procedure for TLC69650YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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