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Texas Instruments TLC6C5912QDWRQ1
- Part No.:
- TLC6C5912QDWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLC6C5912QDWRQ1.pdf
- Description:
- IC LED DRIVER LINEAR 50MA 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,700
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Product details
Overview
TLC6C5912QDWRQ1 from Texas Instruments is an automotive-qualified 12-channel, low-side open-drain LED driver with serial-in/parallel-out shift register architecture, 40 V output voltage rating, 50 mA continuous sink current per channel at 5 V VCC, and thermal shutdown protection - used to drive instrument cluster LEDs and tell-tale lamps in 9–40 V battery systems.
For engineers reviewing the TLC6C5912QDWRQ1 datasheet, TLC6C5912QDWRQ1 pinout, TLC6C5912QDWRQ1 application, or TLC6C5912QDWRQ1 equivalent, key selection considerations include its SOIC-20 automotive-grade packaging, 3–5.5 V logic supply range, cascading SER OUT capability, global PWM dimming via G pin, and 125°C ambient operation limit.
Technical Context
The TLC6C5912QDWRQ1 integrates a 12-bit serial-in, parallel-out shift register feeding a 12-bit D-type storage register, with data latched on rising edges of SRCK and RCK respectively. Its DMOS outputs operate as current-sinking switches, enabling direct cathode control of LEDs powered from up to 40 V supplies.
It supports daisy-chained configurations via SER OUT (data clocked out on SRCK falling edge), includes active-low asynchronous CLR for full register reset, and uses active-low G for global output enable/disable - allowing synchronized PWM dimming across all 12 channels without MCU reprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Max | 40 V - withstands automotive load-dump transients without external clamping |
| IOUT per Channel | 50 mA continuous at VCC = 5 V - supports standard LED loads without external current-limiting resistors on high-side rail |
| VCC Range | 3 V to 5.5 V - compatible with both 3.3 V and 5 V microcontrollers |
| Operating Temp | −40°C to +125°C - qualified for under-hood and instrument panel environments |
| rDS(on) | 6.7 Ω typical (all channels on, VCC = 5 V, 25°C) - limits power dissipation to ≤120 mW per channel at 30 mA |
| ESD Rating | ±2000 V HBM - robust handling in automotive manufacturing and service environments |
| Thermal Shutdown | 175°C trip point with 15°C hysteresis - prevents latch-up during sustained overloads or poor PCB thermal design |
Pinout & Package
Package: SOIC-20 (DW), 12.80 mm × 7.50 mm body size, RoHS-compliant, NIPDAU lead finish, MSL Level-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Logic supply input | 3–5.5 V digital core supply; requires local 0.1 µF ceramic bypass |
| GND (Pin 20) | Power ground reference | Primary return path for logic and output current; must connect to low-impedance PCB ground plane |
| SER IN (Pin 2) | Serial data input | Accepts MCU SPI/MCU GPIO bitstream; data loaded on each SRCK rising edge |
| SRCK (Pin 19) | Shift register clock | Rising edge clocks data into shift register; falling edge drives SER OUT for reliable cascading |
| RCK (Pin 12) | Register clock | Rising edge transfers 12-bit data from shift register to storage register - updates outputs synchronously |
| CLR (Pin 9) | Asynchronous clear | Active-low; forces all shift and storage registers to zero - used for power-up initialization |
| G (Pin 10) | Output enable | Active-low; when low, enables output buffer transparency; when high, forces all drains OFF - enables global PWM |
| SER OUT (Pin 11) | Serial data output | Drives next device's SER IN in daisy-chain; data appears on SRCK falling edge - eliminates setup/hold timing violations |
| DRAIN0–DRAIN11 (Pins 3–8, 13–18) | Low-side DMOS sink outputs | 12 independent open-drain outputs; each rated 40 V/50 mA; connect to LED cathodes |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient) - certified for safety-critical vehicle subsystems |
| Enhanced cascading | SER OUT timed to SRCK falling edge - eliminates skew-induced bit errors in multi-device chains |
| Thermal shutdown with hysteresis | 175°C trip / 160°C recovery - prevents thermal runaway while allowing graceful recovery after transient overload |
| Slow switching (tr/tf) | 250 ns rise / 200 ns fall time - reduces EMI emissions without requiring external snubbers |
| Global PWM dimming | G pin accepts external PWM signal - enables synchronized brightness control across all 12 channels with single MCU pin |
Applications
| Instrumentation Clusters | Tell-Tale Lamps |
|---|---|
Use Scenario: Driving segmented LED backlighting and warning indicators in digital instrument panels powered from 12 V battery rails with load-dump transients up to 40 V. IC Role / Device Role / Timing Role: Low-side LED sink driver with synchronous register update (RCK) and global enable (G) - provides deterministic timing for indicator activation/deactivation. Use Value: 40 V output rating eliminates need for external TVS on LED supply lines; 12-channel integration reduces board space vs discrete FET solutions. |
Use Scenario: Controlling multiple status LEDs (e.g., ABS, airbag, oil pressure) in vehicle dashboards where reliability and ESD immunity are critical. IC Role / Device Role / Timing Role: Serially configured LED driver with asynchronous CLR - ensures known-off state at power-on reset and fault-safe default behavior. Use Value: ±2000 V HBM ESD rating prevents field failures during service; thermal shutdown protects against wiring faults or shorted LEDs. |
| LED Illumination Controls | Automotive Lighting Modules |
Use Scenario: Dimmable interior lighting (map lights, footwell LEDs) controlled by MCU with limited GPIO resources. IC Role / Device Role / Timing Role: Shift-register-based current sink with G-pin PWM interface - converts 3-wire serial interface into 12 independently controllable outputs. Use Value: Reduces MCU GPIO count by 12 pins; slow edge rates meet CISPR-25 Class 5 radiated emissions limits without added filtering. |
Use Scenario: Compact LED driver module for auxiliary lighting (cargo area, glovebox) operating across wide battery voltage (9–40 V) and temperature ranges. IC Role / Device Role / Timing Role: Medium-voltage, low-current power logic driver - interfaces between 3.3 V/5 V MCU and high-side LED supply rails. Use Value: SOIC-20 package allows automated assembly; AEC-Q100 qualification enables use without additional system-level qualification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC6C5912QPWRQ1 | TSSOP-20 package (6.50 mm × 4.40 mm); identical electrical specs and pinout | Better thermal performance (RθJA = 114.8°C/W vs 81.2°C/W for SOIC); preferred for space-constrained layouts | Select when PCB real estate is limited or higher power density is required; same firmware and layout logic apply |
| TPS65136QRGERQ1 | Integrated boost + dual-channel LED driver; no shift register; 30 mA per channel; I²C interface | Designed for RGB LED biasing with programmable current; lacks serial cascade capability and 40 V tolerance | Choose only for low-channel-count, digitally addressable applications where MCU I²C is available and 40 V operation is unnecessary |
Compared with TLC6C5912QPWRQ1, the TLC6C5912QDWRQ1 offers superior thermal dissipation in SOIC packaging but larger footprint; versus TPS65136QRGERQ1, it provides scalable 12-channel serial control and automotive-grade 40 V robustness at the cost of programmability and integrated power conversion.
Availability
TLC6C5912QDWRQ1 is available at Aetrix Electronics and suitable for automotive instrumentation clusters, dashboard tell-tale lamp systems, and LED illumination controls requiring stable component supply across extended temperature and voltage ranges.
Supply support for TLC6C5912QDWRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.
The TLC6C5912QDWRQ1 belongs to TI's automotive-qualified Power Logic LED driver family, designed specifically for robust, scalable control of indicator and backlighting LEDs in harsh vehicle environments.
FAQ
What is the maximum LED supply voltage the TLC6C5912QDWRQ1 can handle?
The TLC6C5912QDWRQ1 supports up to 40 V on its DRAIN pins, enabling direct connection to automotive battery rails (including 24 V systems and 40 V load-dump transients). This eliminates the need for external clamping diodes in most vehicle applications, and is confirmed in the Absolute Maximum Ratings table (VDS = 42 V).
Does the TLC6C5912QDWRQ1 support daisy-chaining with other devices?
Yes, the TLC6C5912QDWRQ1 supports reliable daisy-chaining via its SER OUT pin, which outputs data on the falling edge of SRCK. This timing avoids setup/hold conflicts when cascading multiple TLC6C5912QDWRQ1 devices, and is explicitly documented in the Pin Functions and Switching Characteristics sections of the datasheet.
Can the TLC6C5912QDWRQ1 be used with a 3.3 V microcontroller?
Yes, the TLC6C5912QDWRQ1 operates with VCC from 3 V to 5.5 V and accepts logic inputs down to 0.7 V (VIL) and up to 2.4 V (VIH). It is fully compatible with 3.3 V MCUs, and the recommended operating conditions confirm stable function at VCC = 3.3 V across the full temperature range.
How does thermal shutdown work in the TLC6C5912QDWRQ1?
The TLC6C5912QDWRQ1 activates thermal shutdown at approximately 175°C junction temperature, forcing all outputs into high-impedance (open) state. Recovery occurs at ~160°C due to 15°C hysteresis. This behavior is characterized in Electrical Characteristics (TSHUTDOWN and THYS) and protects against sustained overloads or inadequate PCB thermal design.
What is the purpose of the G pin on the TLC6C5912QDWRQ1?
The G (output enable) pin is an active-low control that globally enables or disables all 12 DRAIN outputs. When G is low, output data passes transparently from the storage register; when high, all outputs are forced OFF. This pin supports hardware PWM dimming and safe power-up sequencing, and is defined in the Pin Functions table and Functional Description.
TLC6C5912QDWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 12
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 50mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
TLC6C5912QDWRQ1 FAQ
1.How can I place an order for TLC6C5912QDWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC6C5912QDWRQ1 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 TLC6C5912QDWRQ1 reliable?
The price and inventory of TLC6C5912QDWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC6C5912QDWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC6C5912QDWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC6C5912QDWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC6C5912QDWRQ1?
TLC6C5912QDWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC6C5912QDWRQ1 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 TLC6C5912QDWRQ1?
For technical support, including TLC6C5912QDWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC6C5912QDWRQ1 requirements.
6.How does Aetrix verify that TLC6C5912QDWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC6C5912QDWRQ1 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 TLC6C5912QDWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC6C5912QDWRQ1?
All TLC6C5912QDWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC6C5912QDWRQ1, 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 TLC6C5912QDWRQ1 part is unused and in its original packaging.
Return procedure for TLC6C5912QDWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC6C5912QDWRQ1 Tags
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