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Texas Instruments TLC69601QPWPRQ1
- Part No.:
- TLC69601QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69601QPWPRQ1.pdf
- Description:
- AUTOMOTIVE LOCAL DIMMING MINI-LE
- Quantity:
- Payment:
- Shipping:
Inventory:1,101
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Product details
Overview
TLC69601QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive 16-channel constant-current LED sink driver for local dimming backlight systems, delivering 30mA per channel at up to 20V output compliance, ±2% device-to-device and channel-to-channel current matching, and integrated UART/INT and SOUT/CLK_O diagnostic readback - deployed in central infotainment displays requiring precise per-zone luminance control.
For engineers reviewing the TLC69601QPWPRQ1 datasheet, TLC69601QPWPRQ1 pinout, TLC69601QPWPRQ1 application, or TLC69601QPWPRQ1 equivalent, key selection criteria include its HTSSOP-28 package with PowerPAD thermal pad, adaptive headroom voltage control (AHVC) interface to DC/DC, 15-bit brightness resolution, and functional safety documentation support for ASIL-B system integration.
Technical Context
The TLC69601QPWPRQ1 implements a daisy-chainable two-wire serial interface supporting up to 20MHz data transfer and configurable 1.8V/3.3V I/O compatibility, enabling scalable deployment across >1000 devices for 16,000+ local dimming zones. Its SRAM-based brightness storage allows independent per-channel intensity programming without host intervention between frames.
Diagnostic architecture integrates three dedicated error flags - LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD) - with dual readback paths: UART + interrupt pin or two-wire CLK_O/SOUT, both register-selectable. AHVC dynamically adjusts DC/DC feedback only at the final device's FB pin to minimize layout complexity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sinks with independent PWM/hybrid dimming control |
| Max output current/voltage | 30mA per channel at 20V compliance - enables driving standard automotive LED strings without external boost |
| Current accuracy | ±2% (typ.) device-to-device and channel-to-channel matching - ensures uniform luminance across display zones |
| Brightness resolution | Up to 15-bit - supports fine-grained contrast control for HDR content rendering |
| Supply voltage range | 3V to 5.5V VCC - compatible with automotive 3.3V and 5V domain supplies |
| Quiescent current | ≤200μA in standby mode - minimizes always-on power draw in vehicle ignition-off states |
| Diagnostics | Per-zone LED open/short detection + thermal shutdown reporting via UART/INT or SOUT/CLK_O - enables real-time fault isolation |
Pinout & Package
HTSSOP-28 (PWP) package with exposed thermal pad (PowerPAD™), 9.7mm × 4.4mm body size, 1.2mm max height, wettable flank option available. Designed for high-power dissipation in automotive ambient conditions (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | 3V–5.5V main power rail; decoupling required near pin for noise-sensitive analog current regulation |
| GND | Ground reference | Common return for analog current sinks and digital logic; separate analog/digital ground routing recommended |
| OUT0–OUT15 | Constant-current sink outputs | 16 individually controlled LED cathode connections; each capable of sinking up to 30mA at 20V |
| CLK_I / CLK_O | Serial clock input/output | Daisy-chain clock propagation path - CLK_I receives from upstream, CLK_O drives downstream device |
| SIN / SOUT | Serial data input/output | Two-wire daisy-chain interface - SIN accepts configuration data, SOUT reports diagnostics or status |
| FB | DC/DC feedback input | Only the last device's FB pin connects to DC/DC converter; enables single-point adaptive headroom control |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events - eliminates polling overhead in host firmware |
| R1 / R2 | Current-setting resistors | External precision resistors set full-scale current per channel; tolerance directly impacts ±2% matching spec |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ESD Level 2 and CDM Level C4B - meets automotive front-end display reliability requirements |
| Adaptive Headroom Voltage Control (AHVC) | Reduces LED string voltage overhead by dynamically adjusting DC/DC output - improves system efficiency by minimizing power loss in current sinks |
| Programmable EMI reduction | Configurable drive strength and 4-phase shifting schemes suppress radiated emissions - simplifies EMC compliance for display modules |
| Black insertion & VRR support | Hardware-accelerated timing features reduce motion blur and enable variable refresh rate synchronization - enhances visual quality in dynamic HUD/cluster applications |
| Functional safety documentation | Available FIT data, failure modes, and diagnostic coverage analysis - accelerates ISO 26262 ASIL-B system-level safety case development |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel with 256+ local dimming zones in center console display, operating continuously during vehicle runtime. IC Role / Device Role / Timing Role: Primary 16-channel LED current sink managing per-zone backlight intensity synchronized to video frame updates. Use Value: Enables >10,000:1 contrast ratio and reduced power consumption via AHVC, meeting OEM requirements for sunlight-readable UIs. |
Use Scenario: Compact TFT cluster with segmented local dimming behind analog speedometer and digital tachometer graphics. IC Role / Device Role / Timing Role: Local dimming controller interfacing with MCU over daisy-chained serial bus; provides real-time fault reporting via INT pin. Use Value: Delivers flicker-free dimming transitions and thermal fault detection - critical for driver attention and functional safety compliance. |
| Automotive Heads-Up Display (HUD) | Advanced Driver Assistance System (ADAS) Display |
Use Scenario: Projection-based HUD requiring ultra-low latency brightness updates to match head movement and road scene changes. IC Role / Device Role / Timing Role: Low-latency LED driver with black insertion feature ensuring minimal persistence between projected symbols. Use Value: Achieves sub-1ms brightness update latency and eliminates ghosting - essential for accurate spatial alignment of virtual imagery. |
Use Scenario: Safety-critical ADAS warning overlay on instrument cluster, requiring guaranteed fault detection and fail-safe dimming behavior. IC Role / Device Role / Timing Role: Functional safety-aware backlight driver with LOD/LSD/TSD diagnostics reported via UART for ASIL-B monitoring. Use Value: Supports diagnostic coverage >90% per ISO 26262 Annex D - enables safe degradation (e.g., full-brightness fallback on fault). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611QPWPRQ1 | 60mA per channel (vs. 30mA), same 20V compliance and pinout | Supports higher-brightness LED strings or fewer parallel channels per IC | Select when display requires >30mA/channel drive capability without changing PCB layout |
| TLC69601QRTWRQ1 | Same 30mA/20V specs but in 24-pin WQFN (RTW) package, 4mm × 4mm, no exposed thermal pad | Lower profile (0.8mm vs. 1.2mm) and smaller footprint; thermal performance differs due to package construction | Choose for space-constrained designs where HTSSOP thermal pad mounting is impractical |
Compared with TLC69601QPWPRQ1, TLC69611QPWPRQ1 offers double current drive in identical packaging for higher-luminance zones, while TLC69601QRTWRQ1 retains electrical specs but trades thermal robustness for compactness - both require validation of thermal derating and layout adaptation.
Availability
TLC69601QPWPRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and heads-up displays requiring stable component supply under AEC-Q100 Grade 1 conditions.
Supply support for TLC69601QPWPRQ1 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 automotive electronics, with decades of automotive qualification expertise and functional safety infrastructure.
The TLC696x1-Q1 product line is designed specifically for automotive LCD local dimming backlight systems, emphasizing high channel count, diagnostic integrity, and ASIL-B-ready functional safety support.
FAQ
What is the maximum LED string voltage supported by the TLC69601QPWPRQ1?
The TLC69601QPWPRQ1 supports up to 20V output compliance per channel, allowing direct connection to common automotive LED strings without external boost circuitry. This 20V rating is specified across the full operating temperature range (–40°C to +125°C) and applies to all 16 constant-current sinks in the TLC69601QPWPRQ1 device.
Does the TLC69601QPWPRQ1 support daisy-chaining, and how many devices can be cascaded?
Yes, the TLC69601QPWPRQ1 supports daisy-chaining via its two-wire serial interface (CLK_I/SIN → CLK_O/SOUT). The architecture supports up to 1024 devices in a single chain, enabling control of 16,384 local dimming zones - a capability confirmed in the device description and validated in TI's reference schematics for large-area automotive displays.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69601QPWPRQ1?
AHVC in the TLC69601QPWPRQ1 dynamically adjusts the DC/DC converter output voltage based on the highest forward voltage among active LED strings. Only the FB pin of the last device in the daisy chain connects to the DC/DC feedback node, simplifying layout while minimizing power loss across all current sinks - a design feature explicitly documented in the Simplified Schematic and Description sections.
What diagnostic capabilities does the TLC69601QPWPRQ1 provide, and how are they reported?
The TLC69601QPWPRQ1 provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These diagnostics are reported through either UART + INT pin or two-wire SOUT/CLK_O - a register-selectable configuration that avoids host polling and enables deterministic fault response in safety-critical automotive systems.
Is the TLC69601QPWPRQ1 qualified for automotive use, and what AEC-Q100 grade does it meet?
Yes, the TLC69601QPWPRQ1 is AEC-Q100 qualified for automotive applications at Grade 1, covering ambient operating temperatures from –40°C to +125°C. It also meets HBM ESD Level 2 and CDM ESD Level C4B requirements - specifications explicitly listed in the Features section and verified in TI's official orderable addendum.
TLC69601QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- 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:
- 20V
- Current - Output / Channel:
- 30mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC69601QPWPRQ1 FAQ
1.How can I place an order for TLC69601QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69601QPWPRQ1 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 TLC69601QPWPRQ1 reliable?
The price and inventory of TLC69601QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69601QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69601QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69601QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69601QPWPRQ1?
TLC69601QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69601QPWPRQ1 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 TLC69601QPWPRQ1?
For technical support, including TLC69601QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69601QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69601QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69601QPWPRQ1 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 TLC69601QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69601QPWPRQ1?
All TLC69601QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69601QPWPRQ1, 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 TLC69601QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69601QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69601QPWPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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