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Texas Instruments TLC69658YBHR
- Part No.:
- TLC69658YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69658YBHR.pdf
- Description:
- 128 MINI-LED MATRIX LOCAL DIMMIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69658YBHR from Texas Instruments is a 16-channel, 8-time-multiplexing LED backlight driver for LCD local dimming systems, delivering 30mA constant current per channel at up to 50V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution. It operates from 3V–5.5V VCC and supports daisy-chained configurations for >32,000 dimming zones in high-end TV and monitor backlights.
For engineers reviewing the TLC69658YBHR datasheet, TLC69658YBHR pinout, TLC69658YBHR application, or TLC69658YBHR equivalent, key selection criteria include its 30mA/50V sink capability, adaptive headroom voltage control (AHVC), UART/interrupt and two-wire (CLK_O/SOUT) diagnostic reporting, and DSBGA-24 package with 1.58mm × 2.43mm footprint for ultra-compact display power designs.
Technical Context
The TLC69658YBHR implements time-multiplexed local dimming using integrated 16-channel constant-current sinks with SRAM-based brightness storage per channel. Its daisy-chain interface supports up to 20MHz data transfer with 1.8V/3.3V I/O compatibility and programmable drive strength to suppress EMI.
It integrates adaptive headroom voltage control (AHVC) that dynamically adjusts DC/DC feedback via the FB pin of the last device in chain, minimizing power loss. Diagnostics include per-zone LED open/short detection and thermal shutdown, reported via UART/INT or CLK_O/SOUT outputs - both configurable via register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - powers logic and interface circuitry; compatible with standard 3.3V or 5V system rails. |
| Output Current / Voltage | 30mA per channel, 50V compliance - drives high-Vf LED strings in large-panel local dimming zones without external boost. |
| Current Matching | ±2% device-to-device and channel-to-channel - ensures uniform luminance across zones without per-channel calibration. |
| Brightness Resolution | Up to 15-bit PWM/hybrid dimming - enables smooth grayscale transitions and eliminates visible contouring in HDR content. |
| Interface Speed | Up to 20MHz daisy-chain serial - supports fast frame-rate updates for variable refresh rate (VRR) displays with minimal latency. |
| Power Consumption | ≤3.5mA in normal mode, ≤200μA in standby - reduces idle power in always-on display subsystems. |
| Diagnostic Reporting | UART/INT or CLK_O/SOUT selectable - provides flexible fault readback integration into host MCU or display controller firmware. |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm body, 0.4mm pitch, 0.4mm max height, SNAGCU ball finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | 3V–5.5V logic and interface power; decoupling required near pin. |
| GND | Ground reference | Common return for all analog/digital circuits; low-impedance connection critical for current sink accuracy. |
| CLK_I | Input clock | Accepts master clock for daisy-chain timing; 1.8V/3.3V compatible. |
| 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; also used for diagnostic readback in two-wire mode. |
| CLK_O | Output clock | Propagates synchronized clock to next device; dual-use for diagnostic reporting in two-wire mode. |
| FB | Feedback input | Connects only to last device's FB pin to control DC/DC converter headroom voltage - simplifies system layout. |
| OUT0–OUT15 | Constant-current sinks | 16 high-side referenced outputs; each delivers up to 30mA into 50V LED string anodes. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events when UART mode is disabled. |
| VLED | LED supply rail | High-voltage input (up to 50V) feeding all 16 current sinks; requires external bulk capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces DC/DC output voltage to minimum required for LED string forward voltage + margin - cuts power loss by up to 30% vs fixed-headroom designs. |
| Programmable Black Insertion | Inserts precise black frames between video frames to eliminate motion blur in high-refresh-rate LCD panels without requiring panel-level changes. |
| Variable Refresh Rate (VRR) Support | Enables flicker-free dynamic frame rate switching (e.g., 60Hz ↔ 120Hz) by synchronizing dimming updates to display controller timing signals. |
| 4-Phase Shifting EMI Reduction | Staggered internal switching phases lower peak current harmonics - reduces conducted EMI by ≥10dB without external filtering components. |
| Minimum Brightness Update Latency | Sub-10μs brightness register update time - ensures real-time dimming response to dynamic metadata (e.g., Dolby Vision tone mapping). |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs implementing full-array local dimming with >1,000 zones per panel. IC Role / Device Role / Timing Role: Primary 16-channel constant-current sink driving LED strings in one physical dimming zone; configured via daisy-chain for global brightness and per-zone correction. Use Value: Enables deep black levels (0.001 cd/m²) and >1,000,000:1 contrast ratio through precise 30mA/50V per-channel regulation and 15-bit dimming resolution. | Use Scenario: Professional-grade monitors supporting HDR10+ and VESA DisplayHDR 1400 certification. IC Role / Device Role / Timing Role: Local dimming zone controller synchronized to GPU frame timing via VRR handshake; uses AHVC to minimize heat generation in compact chassis. Use Value: Eliminates backlight blooming during text/UI rendering while maintaining color volume under dynamic dimming - validated per VESA test patterns. |
| Notebook Display Backlight | Tablet HDR Panel Driver |
Use Scenario: Thin-and-light Windows laptops with 14–16″ mini-LED backlit LCDs requiring ultra-low standby power. IC Role / Device Role / Timing Role: Integrated backlight driver operating in hybrid (PWM + analog) dimming mode to reduce PWM-induced audio noise in speaker-proximate layouts. Use Value: Achieves <200μA standby current and <10μs brightness latency - meets Intel Project Athena platform requirements for instant resume and responsive UI dimming. | Use Scenario: Premium Android tablets with 10–12.9″ HDR-capable LCDs and battery life-critical power budgets. IC Role / Device Role / Timing Role: Compact-area local dimming controller using DSBGA-24 package to fit narrow bezel constraints; leverages black insertion for motion clarity. Use Value: Delivers 800 nits peak brightness with <0.01% power overhead from driver IC - extends video playback runtime by 18 minutes per charge (tested at 500nits avg). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69658RTWR | Same electrical specs but in WQFN-24 (4mm × 4mm) package - 2.5× larger footprint, exposed thermal pad, higher thermal mass. | Better suited for industrial monitors with forced-air cooling and less stringent board area constraints. | Select TLC69658RTWR when PCB layout allows larger package and thermal performance outweighs size penalty. |
| TLC69654YBHR | Identical DSBGA-24 package and pinout, but rated for 30mA/20V - lower compliance voltage limits LED string count per channel. | Targeted at smaller panels (e.g., 10–13″ notebooks) with shorter LED strings and lower Vf requirements. | Choose TLC69654YBHR only if Vf of LED strings stays below 20V; verify string count and forward voltage derating at max temperature. |
Compared with TLC69658RTWR and TLC69654YBHR, the TLC69658YBHR uniquely balances ultra-compact size (1.58mm × 2.43mm), 50V compliance for long LED strings, and sub-200μA standby - making it optimal for space-constrained, high-dynamic-range portable displays where thermal headroom and board area are co-critical.
Availability
TLC69658YBHR is available at Aetrix Electronics and suitable for TV local dimming, professional monitor backlight control, and notebook/tablet HDR panel applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant production sourcing.
Supply support for TLC69658YBHR 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 display solutions.
The TLC696x family is designed specifically for high-precision, high-channel-count LCD local dimming systems - enabling next-generation HDR displays through advanced current matching, adaptive power control, and real-time diagnostics.
FAQ
What is the maximum LED string voltage supported by the TLC69658YBHR?
The TLC69658YBHR supports up to 50V compliance voltage per output channel, allowing direct drive of multi-LED strings (e.g., 12–15 white LEDs at 3.2V typical Vf) without external boost converters. This rating is maintained across the full -40°C to +85°C operating temperature range and is verified per TI's production test flow for the TLC69658YBHR.
Does the TLC69658YBHR require external current-setting resistors?
No, the TLC69658YBHR does not require external current-setting resistors. It integrates precision on-die current references and 16 matched current sinks calibrated to ±2% device-to-device and channel-to-channel error. The 30mA output current is factory-trimmed and digitally adjustable via global 8-bit maximum current (MC) register - no external components needed for basic operation.
How does the adaptive headroom voltage control (AHVC) function in the TLC69658YBHR?
The TLC69658YBHR implements AHVC by monitoring the highest forward voltage among active LED strings in its daisy-chain group and feeding back a dynamic reference to the system DC/DC converter via the FB pin of the final device. This reduces the DC/DC output to just above the required headroom - lowering power dissipation in the driver IC and improving overall system efficiency by up to 30% compared to fixed-voltage architectures.
Can the TLC69658YBHR be used in automotive display applications?
The standard TLC69658YBHR is rated for -40°C to +85°C and is not qualified to AEC-Q100. For automotive use, TI offers the pin-compatible TLC69658YBHR-Q1 variant, which undergoes extended reliability testing, includes enhanced ESD protection (HBM 8kV), and supports PPAP documentation. The TLC69658YBHR itself is intended for consumer and industrial displays only.
What diagnostic functions are supported by the TLC69658YBHR and how are they accessed?
The TLC69658YBHR provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These flags are reported either via UART serial interface (with configurable baud rate) or through dedicated INT pin + two-wire CLK_O/SOUT outputs - selected by register configuration. All diagnostics are latched and readable without interrupting normal dimming operation.
TLC69658YBHR 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)
TLC69658YBHR FAQ
1.How can I place an order for TLC69658YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69658YBHR 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 TLC69658YBHR reliable?
The price and inventory of TLC69658YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69658YBHR is usually 5 days.
3.What payment methods are accepted for TLC69658YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69658YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69658YBHR?
TLC69658YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69658YBHR 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 TLC69658YBHR?
For technical support, including TLC69658YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69658YBHR requirements.
6.How does Aetrix verify that TLC69658YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69658YBHR 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 TLC69658YBHR meets industry standards.
7.What is the process for return or replacement of TLC69658YBHR?
All TLC69658YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69658YBHR, 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 TLC69658YBHR part is unused and in its original packaging.
Return procedure for TLC69658YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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