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Texas Instruments TLC59116ITPWRQ1
- Part No.:
- TLC59116ITPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC59116ITPWRQ1.pdf
- Description:
- IC LED DRV LIN I2C 120MA 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,640
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Product details
Overview
TLC59116ITPWRQ1 from Texas Instruments is an AEC-Q100 qualified 16-channel constant-current LED sink driver with I²C-bus interface, 8-bit individual PWM (97 kHz), 8-bit group PWM (190 Hz or 24 Hz–10.73 s), open-load/overtemperature detection, and 5.5-V tolerant inputs. It operates from 3 V to 5.5 V and supports up to 120 mA per channel with 17 V output voltage tolerance - used in automotive cluster backlighting and RGBA color-mixing systems.
For engineers reviewing the TLC59116ITPWRQ1 datasheet, TLC59116ITPWRQ1 pinout, TLC59116ITPWRQ1 application, or TLC59116ITPWRQ1 equivalent, key selection considerations include I²C Fast-mode Plus (1 MHz) support with 30-mA SDA drive, hardware address pins (A0–A3) enabling up to 14 devices on one bus, REXT-based current programming, active-low RESET, and integrated error flag reporting for production-grade automotive lighting control.
Technical Context
The TLC59116ITPWRQ1 integrates a 25-MHz internal oscillator (no external crystal required), dual-layer PWM architecture (individual 97-kHz + group 190-Hz or programmable blink), and four software-programmable I²C sub-call addresses for synchronized multi-device control. Its open-circuit detection compares actual output current against 0.5× target current per channel, while overtemperature protection includes both global shutdown (~170°C) and per-channel thermal sensing.
It implements three reset methods - power-on reset (VPOR = 2.5 V), external active-low RESET with 10-ns minimum pulse width, and software reset (SWRST call at I²C address 0xD6 with byte sequence A5h/5Ah). Output state update is configurable to occur on I²C STOP (default) or ACK, enabling precise timing of brightness transitions across all 16 channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sink outputs (OUT0–OUT15), each individually controllable |
| Current range | 5 mA to 120 mA per channel, set via external REXT resistor (e.g., 720 Ω → 26 mA) |
| PWM resolution | 8-bit (256-step) individual brightness + 8-bit group dimming/blink, no microcontroller overhead |
| I²C interface | Fast-mode Plus (Fm+) compliant, 1 MHz max clock, 30-mA SDA drive for high-capacitance buses |
| Supply voltage | 3.0 V to 5.5 V operation; 5.5-V tolerant inputs (SCL, SDA, RESET, A0–A3) |
| Output voltage rating | 17 V maximum output voltage tolerance - supports common anode LED strings without external FETs |
| Operating temperature | –40°C to +105°C ambient, AEC-Q100 Grade 2 qualified for automotive cabin applications |
Pinout & Package
28-pin Thin Shrink Small-Outline Package (TSSOP-PW), 9.70 mm × 4.40 mm body size, exposed pad not present, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REXT | Current reference input | Connects external resistor to set all 16 output currents simultaneously; 720 Ω yields ~26 mA per channel |
| A0–A3 | Hardware address inputs | Four binary inputs enabling 14 unique I²C addresses (0x60–0x6D) per device on shared bus |
| OUT0–OUT15 | Constant-current sink outputs | 16 open-drain outputs capable of sinking up to 120 mA each at ≤17 V; no external current-limiting resistors needed |
| VCC | Power supply input | 3.0 V to 5.5 V main supply; powers logic and output drivers; decoupling capacitor required |
| GND | Ground reference | Three dedicated ground pins (pins 10, 19, 24) minimize ground bounce in high-current switching |
| SDA | I²C bidirectional data | Open-drain I/O with 30-mA drive strength; requires external pullup; supports Fast-mode Plus timing |
| SCL | I²C clock input | Input-only clock line with noise filter; compatible with 1 MHz Fm+ clocks and standard/fast modes |
| RESET | Active-low reset | Asynchronous reset input; low pulse ≥10 ns forces register reload to POR defaults (all outputs off) |
Key Features
| Feature | Design Value |
|---|---|
| Individual + group PWM mixing | Each LED independently controlled at 97 kHz while sharing synchronized 190-Hz dimming or programmable blink (24 Hz–10.73 s) |
| Open-load and thermal fault detection | Detects open-circuit LEDs and per-channel/global overtemperature events; flags stored in EFLAG1/EFLAG2 registers for diagnostics |
| Multi-device addressing | Four hardware address pins + four software sub-call addresses enable hierarchical control of LED groups across multiple ICs |
| No-glitch power-up | Internal POR ensures outputs remain high-impedance until VCC reaches 2.5 V, preventing unintended LED turn-on during rail ramp |
| Hot-insertion support | 5.5-V tolerant inputs and glitch-free reset allow live insertion into powered I²C buses without bus contention or latch-up |
Applications
| Automotive Instrument Cluster Backlighting | Center Stack Button Illumination |
|---|---|
Use Scenario: Driving segmented LED arrays behind analog gauges and digital displays in vehicle dashboards under wide temperature and EMI conditions. IC Role / Device Role / Timing Role: Constant-current sink driver providing synchronized PWM dimming and blink for warning indicators, speedometer needles, and gear position lights. Use Value: Eliminates discrete current-setting resistors and microcontroller PWM timers; AEC-Q100 qualification ensures reliability over 15-year automotive service life. | Use Scenario: Uniform illumination of tactile buttons in center console (HVAC, infotainment, seat controls) with dynamic brightness scaling based on ambient light. IC Role / Device Role / Timing Role: I²C-controlled 16-channel LED driver enabling per-button brightness tuning and coordinated fade-in/fade-out effects via group PWM. Use Value: Reduces BOM count by replacing 16 discrete drivers; software-addressable sub-calls allow simultaneous control of all "climate" or "media" buttons without MCU intervention. |
| RGB Color-Mixing Lighting | Automotive Interior Ambient Lighting |
Use Scenario: Precise intensity control of red/green/blue/amber LEDs in mood lighting zones to generate >16 million colors with consistent white point. IC Role / Device Role / Timing Role: 16-channel constant-current sink with independent 8-bit brightness registers and synchronized group dimming for hue/saturation/volume control. Use Value: 97-kHz individual PWM prevents visible flicker; 0.1%/V output regulation ensures color stability across varying forward voltages of mixed-color LEDs. | Use Scenario: Controlling footwell, door handle, cupholder, and overhead LED strips with smooth transitions and fault-aware operation. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with open-load detection and thermal shutdown, reporting errors via I²C for system-level diagnostics. Use Value: Enables predictive maintenance alerts (e.g., "LED #7 open circuit") and automatic fallback to adjacent channels - critical for OEM warranty compliance and user experience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59116IRHBRQ1 | Same die in 32-pin VQFN package (5 mm × 5 mm); higher thermal performance (RθJA = 46.5°C/W vs. 78°C/W) | Better suited for high-density PCB layouts requiring lower junction temperature rise at full 120-mA/channel load | Select when thermal headroom is constrained and board space allows larger QFN footprint |
| PCA9635PW,118 | 16-channel I²C LED driver with 12-bit PWM (4096 steps), but only 25-mA max per channel and no open-load detection | Limited to low-power indicator LEDs; lacks automotive qualification and fault diagnostics | Choose only for non-automotive consumer UI where ultra-fine brightness gradation outweighs robustness needs |
Compared with TLC59116IRHBRQ1 and PCA9635PW,118, the TLC59116ITPWRQ1 uniquely balances AEC-Q100 compliance, 120-mA per-channel drive, integrated diagnostics, and TSSOP manufacturability - making it the optimal choice for cost-sensitive, thermally moderate automotive backlight modules.
Availability
TLC59116ITPWRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, center stack interfaces, and interior ambient lighting systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC59116ITPWRQ1 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 U.S.-based semiconductor company specializing in analog, embedded processing, and automotive-grade ICs, with leadership in power management and interface solutions.
The TLC59116ITPWRQ1 belongs to TI's automotive LED driver portfolio, designed specifically for AEC-Q100-compliant backlighting and RGB color-mixing applications in harsh-temperature vehicle environments.
FAQ
What is the maximum output current per channel for the TLC59116ITPWRQ1?
The TLC59116ITPWRQ1 supports a constant output current range of 5 mA to 120 mA per channel, set by the external REXT resistor. At 120 mA, the device maintains ±6% channel-to-channel current matching and ±8% absolute accuracy (measured at 52 mA with REXT = 360 Ω). The maximum output voltage is 17 V, allowing direct connection to common-anode LED strings without additional FETs.
Does the TLC59116ITPWRQ1 require an external crystal or oscillator?
No, the TLC59116ITPWRQ1 integrates a 25-MHz internal oscillator that requires no external components. This oscillator drives both the 97-kHz individual PWM and 190-Hz group PWM generators, eliminating timing component count and improving system reliability. All timing functions - including I²C bus timing, PWM frequencies, and blink intervals - derive from this single internal source.
How does open-load detection work on the TLC59116ITPWRQ1?
The TLC59116ITPWRQ1 performs open-load detection by comparing actual output current against a threshold of 0.5× the target current (IOUT,Th). Detection is only active when the channel is enabled (ON state) and PWM is disabled. If current falls below threshold, the corresponding bit in EFLAG1 or EFLAG2 registers is set. This enables real-time diagnostics without host MCU polling overhead - critical for automotive functional safety monitoring.
Can multiple TLC59116ITPWRQ1 devices share the same I²C bus?
Yes, up to 14 TLC59116ITPWRQ1 devices can operate on a single I²C bus using hardware address pins A0–A3. Each device supports 14 unique 7-bit addresses (0x60–0x6D), and additionally provides four software-programmable sub-call addresses (one group call + three sub-calls) for broadcast commands. This enables hierarchical control - e.g., turning on all red LEDs across eight devices with one I²C write.
What is the purpose of the REXT pin on the TLC59116ITPWRQ1?
The REXT pin on the TLC59116ITPWRQ1 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 current gain (typ. 0.992). For example, a 720-Ω resistor yields ~26 mA per channel. REXT must be connected to GND; leaving it floating disables all outputs.
TLC59116ITPWRQ1 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
TLC59116ITPWRQ1 FAQ
1.How can I place an order for TLC59116ITPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59116ITPWRQ1 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 TLC59116ITPWRQ1 reliable?
The price and inventory of TLC59116ITPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59116ITPWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC59116ITPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59116ITPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59116ITPWRQ1?
TLC59116ITPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59116ITPWRQ1 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 TLC59116ITPWRQ1?
For technical support, including TLC59116ITPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59116ITPWRQ1 requirements.
6.How does Aetrix verify that TLC59116ITPWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC59116ITPWRQ1 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 TLC59116ITPWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC59116ITPWRQ1?
All TLC59116ITPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC59116ITPWRQ1, 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 TLC59116ITPWRQ1 part is unused and in its original packaging.
Return procedure for TLC59116ITPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC59116ITPWRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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