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Texas Instruments TLC59116ITPWTQ1
- Part No.:
- TLC59116ITPWTQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC59116ITPWTQ1.pdf
- Description:
- IC LED DRV LIN I2C 120MA 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
TLC59116ITPWTQ1 from Texas Instruments is a 16-channel automotive-grade I²C-bus constant-current LED sink driver optimized for RGBA color mixing and backlight control in instrument clusters and center-stack interfaces. It delivers 5–120 mA per channel, supports 256-step individual PWM (97 kHz), 256-step group dimming/blink (190 Hz to 10.73 s), and operates from 3.3 V or 5 V supply with 17 V output tolerance.
For engineers reviewing the TLC59116ITPWTQ1 datasheet, TLC59116ITPWTQ1 pinout, TLC59116ITPWTQ1 application, or TLC59116ITPWTQ1 equivalent, key selection criteria include I²C Fast-mode Plus (1 MHz) compatibility, open-load/overtemperature error detection, hardware address pins (A0–A3), REXT-based current programming, and AEC-Q100 Grade 2 qualification for automotive thermal range (–40°C to +105°C).
Technical Context
The TLC59116ITPWTQ1 integrates a 25-MHz internal oscillator and dual PWM architecture: per-channel 97-kHz PWM for fine brightness control and group-level 190-Hz/programmable-frequency PWM for synchronized dimming or blinking. Its I²C interface includes noise filtering on SCL/SDA, 30-mA high-drive SDA output, and software reset (SWRST call at 0xD6h) for bus-wide reinitialization.
Each of the 16 sink outputs supports open-load detection (via IOUT,Th = 0.5 × IOUT,target) and channel-specific overtemperature shutdown, while global thermal protection triggers at ~170°C. Output state update is configurable to occur on I²C Stop (default) or Acknowledge, enabling atomic or byte-wise updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V or 5 V operation; 5.5 V tolerant inputs enable direct interfacing with 5 V MCU I²C buses. |
| Output Current Range | 5 mA to 120 mA per channel, set externally via REXT resistor; supports wide LED forward voltage variation. |
| Max Output Voltage | 17 V - allows direct driving of multi-LED strings without external boost circuitry. |
| PWM Resolution | 256-step (8-bit) individual brightness + 256-step group dimming/blink - enables precise color mixing and visual effects. |
| I²C Interface | Fast-mode Plus (Fm+) compliant up to 1 MHz with 30-mA SDA drive - ensures robust communication on high-capacitance automotive PCBs. |
| Thermal Range | –40°C to +105°C ambient - qualified per AEC-Q100 Grade 2 for under-hood and dashboard applications. |
| Package | 28-pin TSSOP (PW-28), 9.70 mm × 4.40 mm - surface-mount compatible with standard reflow profiles. |
Pinout & Package
28-pin Thin Shrink Small-Outline Package (TSSOP, PW-28) with exposed thermal pad; body size 9.70 mm × 4.40 mm. Pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REXT | Current reference input | Connects external resistor to set all 16 output currents simultaneously; determines full-scale sink current. |
| A0–A3 | Hardware I²C address inputs | Four binary inputs enabling up to 14 unique device addresses on same I²C bus (no address conflict). |
| OUT0–OUT15 | Constant-current sink outputs | 16 independent open-drain outputs; each drives LED cathode to GND with programmable current and PWM. |
| VCC | Power supply input | 3.3 V or 5 V main supply; powers logic and internal oscillator; decoupling required near pin. |
| GND (Pins 10, 19, 24) | Ground reference | Three dedicated ground pins minimize IR drop and improve thermal dissipation across package. |
| SDA / SCL | I²C bidirectional data / clock | Open-drain, 5.5 V tolerant; SDA supports 30-mA drive for high-capacitance bus routing. |
| RESET | Active-low hardware reset | Pull low ≥10 ns to force POR-equivalent register reset; requires external pull-up if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Individual + Group PWM Control | Simultaneous 97-kHz per-channel brightness + 190-Hz/programmable-frequency group dimming/blink - enables dynamic UI effects without MCU overhead. |
| Open-Load & Overtemperature Detection | Detects failed LEDs (open-circuit) and thermal faults per channel or globally - provides diagnostic flags (EFLAG1/EFLAG2) for system-level fault reporting. |
| Software Reset (SWRST) | I²C command (0xD6h + A5h/5Ah) resets all registers to power-on defaults - eliminates need for hardware RESET assertion during firmware updates. |
| Four Sub-Call Addresses | Configurable group addressing (one Group Call + three Sub Call) allows synchronized control of color groups (e.g., all red LEDs) with single I²C transaction. |
| No Glitch on Power-Up | Internal POR holds outputs high (LED off) until VCC ≥2.5 V and registers stabilize - prevents unintended LED flash at startup. |
Applications
| Instrument Cluster Backlighting | Center Stack Button Illumination |
|---|---|
Use Scenario: Driving RGB LED arrays behind analog gauges and digital displays in automotive instrument clusters. IC Role / Device Role / Timing Role: Constant-current sink driver with synchronized group PWM for uniform dimming across speedometer, tachometer, and warning indicators. Use Value: Eliminates discrete current-setting resistors and MCU PWM timers; 17 V output tolerance supports mixed-color LED strings without external regulators. |
Use Scenario: Controlling illuminated soft-touch buttons on infotainment center stacks with variable intensity and blink feedback. IC Role / Device Role / Timing Role: I²C-addressable LED driver providing per-button brightness and coordinated blink patterns (e.g., menu navigation cues). Use Value: Reduces MCU GPIO count and firmware complexity; hardware address pins (A0–A3) allow daisy-chaining up to 14 buttons on one I²C bus. |
| Automotive HVAC Panel Lighting | ADAS Warning Indicator Modules |
Use Scenario: Managing multi-color status LEDs on climate control panels requiring temperature-dependent brightness scaling. IC Role / Device Role / Timing Role: Automotive-qualified LED driver with –40°C to +105°C operation and open-load diagnostics for field reliability. Use Value: Built-in thermal shutdown and error flagging enable fail-safe behavior; 256-step linear dimming meets OEM ambient light adaptation requirements. |
Use Scenario: Driving high-visibility amber/red warning LEDs for lane departure, blind spot, or forward collision alerts. IC Role / Device Role / Timing Role: High-current sink (up to 120 mA) with programmable blink frequency (24 Hz to 10.73 s) for attention-grabbing visual alerts. Use Value: Precise blink timing control avoids perceptual fatigue; group PWM allows simultaneous activation of multiple ADAS indicators with single register write. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59283RTWR | 16-channel, 5–120 mA, but only supports standard/fast-mode I²C (400 kHz max); no group blink; no open-load detection. | Lacks programmable blink and diagnostics - suitable for basic static backlighting where cost is critical and diagnostics unnecessary. | Select when AEC-Q100 qualification and advanced fault reporting are not required; verify I²C bus capacitance limits at 400 kHz. |
| PCA9635D,118 | 16-channel, 25-mA max per channel; 1 MHz Fm+ I²C; includes built-in 25.6 MHz oscillator; no overtemperature detection. | Lower current capability limits use to indicator LEDs only; lacks thermal protection for high-power backlighting. | Prefer for low-current status lighting in non-automotive environments; confirm 25 mA suffices for target LED forward voltage and brightness. |
Compared with TLC59116ITPWTQ1, TLC59283RTWR offers lower cost but omits critical automotive features like blink programming and open-load detection, while PCA9635D,118 supports higher I²C speed but cannot drive high-brightness backlight LEDs due to its 25-mA ceiling.
Availability
TLC59116ITPWTQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, center stack interfaces, and HVAC panel lighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC59116ITPWTQ1 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 ICs, with decades of experience in high-reliability automotive electronics design and manufacturing.
The TLC59116ITPWTQ1 belongs to TI's automotive LED driver product line, engineered specifically for AEC-Q100-compliant interior lighting systems requiring precision current control, integrated diagnostics, and robust I²C communication in harsh environments.
FAQ
What is the maximum output current per channel for the TLC59116ITPWTQ1?
The TLC59116ITPWTQ1 supports a programmable constant output current from 5 mA to 120 mA per channel, set by the external REXT resistor. At REXT = 180 Ω and VCC = 5 V, typical output current reaches 104 mA; at REXT = 720 Ω, it is approximately 26 mA. The device maintains ±6% channel-to-channel current matching across this range.
Does the TLC59116ITPWTQ1 support both 3.3 V and 5 V I²C bus operation?
Yes, the TLC59116ITPWTQ1 supports 3.3 V or 5 V supply voltage and features 5.5 V tolerant inputs on SDA, SCL, RESET, and address pins (A0–A3). This allows direct connection to either 3.3 V or 5 V microcontrollers without level-shifting circuitry, simplifying system integration in mixed-voltage automotive designs.
How does open-load detection work on the TLC59116ITPWTQ1?
Open-load detection on the TLC59116ITPWTQ1 compares actual output current (IOUT) against a threshold (IOUT,Th = 0.5 × IOUT,target) while the channel is enabled and PWM is off. If current falls below threshold, an open-circuit condition is flagged in EFLAG1 or EFLAG2 registers. Detection requires the output to be active - it is disabled when the channel is turned off.
Can the TLC59116ITPWTQ1 drive LEDs with forward voltages above 5 V?
Yes, the TLC59116ITPWTQ1 supports up to 17 V on its OUT0–OUT15 pins, enabling direct driving of LED strings with combined forward voltages up to 17 V (e.g., four white LEDs at ~4.2 V each). This eliminates the need for external boost converters in many automotive backlighting configurations.
What is the purpose of the REXT pin on the TLC59116ITPWTQ1?
The REXT pin on the TLC59116ITPWTQ1 connects to an external resistor that sets the reference current for all 16 output channels. The output current per channel is calculated as IOUT = (16.5 V / REXT) × CG, where CG is a gain factor (typically 0.992). Selecting REXT = 360 Ω yields ~52 mA per channel; REXT = 720 Ω yields ~26 mA.
TLC59116ITPWTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 120mA
- Frequency:
- -
- Dimming:
- I2C
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP
TLC59116ITPWTQ1 FAQ
1.How can I place an order for TLC59116ITPWTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59116ITPWTQ1 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 TLC59116ITPWTQ1 reliable?
The price and inventory of TLC59116ITPWTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59116ITPWTQ1 is usually 5 days.
3.What payment methods are accepted for TLC59116ITPWTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59116ITPWTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59116ITPWTQ1?
TLC59116ITPWTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59116ITPWTQ1 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 TLC59116ITPWTQ1?
For technical support, including TLC59116ITPWTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59116ITPWTQ1 requirements.
6.How does Aetrix verify that TLC59116ITPWTQ1 is sourced from the original manufacturer or authorized distributors?
All TLC59116ITPWTQ1 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 TLC59116ITPWTQ1 meets industry standards.
7.What is the process for return or replacement of TLC59116ITPWTQ1?
All TLC59116ITPWTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC59116ITPWTQ1, 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 TLC59116ITPWTQ1 part is unused and in its original packaging.
Return procedure for TLC59116ITPWTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC59116ITPWTQ1 Tags
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BCR402RE6327HTSA1
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BCR420UE6433HTMA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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