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Texas Instruments TLC6C598QPWRQ1
- Part No.:
- TLC6C598QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC6C598QPWRQ1.pdf
- Description:
- IC LED DRIVER PS 50MA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:16,229
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Product details
Overview
TLC6C598QPWRQ1 from Texas Instruments is an automotive-grade, monolithic 8-bit serial-in/parallel-out shift register LED driver with low-side open-drain DMOS outputs. It delivers 50 mA continuous sink current per channel at VCC = 5 V, supports 40 V drain-to-source voltage, and operates across –40°C to 125°C ambient temperature - enabling robust LED control in vehicle instrumentation clusters and tell-tale lamp systems.
For engineers reviewing the TLC6C598QPWRQ1 datasheet, TLC6C598QPWRQ1 pinout, TLC6C598QPWRQ1 application, or TLC6C598QPWRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, thermal shutdown protection (175°C trip), slow switching (tr = 210 ns, tf = 128 ns) for EMI reduction, and cascading capability via SER OUT falling-edge clocking.
Technical Context
The TLC6C598QPWRQ1 integrates a serial shift register feeding an 8-bit D-type storage register, with independent SRCK (rising-edge data load) and RCK (rising-edge latch transfer) clocks. Data propagates from SER IN to SER OUT on the falling edge of SRCK, enabling reliable multi-device daisy-chaining under clock skew or EMI-prone conditions.
Its eight low-side DMOS outputs feature 40 V breakdown rating and rDS(on) as low as 6 Ω (VCC = 5 V, TA = 25°C, single channel), with current derating above 25°C and automatic thermal shutdown activation at ~175°C (typical), followed by ~160°C hysteresis recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3 V to 5.5 V logic supply - ensures compatibility with 3.3 V and 5 V MCU interfaces without level shifting. |
| Output Sink Current | 50 mA per channel continuous - supports standard automotive LEDs at 30 mA nominal (per J-column design example). |
| Drain Voltage Rating | 40 V - withstands automotive load-dump transients up to 40 V without external clamping. |
| Thermal Shutdown | 175°C trip point with 15°C hysteresis - prevents permanent damage during sustained overloads or poor PCB thermal design. |
| Switching Times | tr = 210 ns, tf = 128 ns - deliberately slowed to reduce EMI in safety-critical lighting applications. |
| Cascading Interface | SER OUT clocks out on SRCK falling edge - eliminates setup/hold timing violations in multi-stage LED driver chains. |
| ESD Protection | HBM ±2000 V, CDM ±750 V - exceeds AEC-Q100 requirements for robustness in manufacturing and field environments. |
Pinout & Package
Package: 16-pin TSSOP (PW), body size 5.00 mm × 4.40 mm; also available in SOIC (D), 9.90 mm × 3.91 mm. Both packages support automotive thermal and mechanical reliability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Logic power input | Supplies internal logic; requires local 0.1-μF ceramic bypass capacitor for noise immunity. |
| SER_IN (Pin 2) | Serial data input | Accepts MCU SPI-like data on rising SRCK edges; enables daisy-chain configuration. |
| DRAIN0–DRAIN7 (Pins 3–6, 11–14) | Low-side open-drain outputs | Sink current to LED cathodes; rated for 40 V and 50 mA - no external flyback diodes needed for inductive loads. |
| CLR (Pin 7) | Active-low register clear | Asynchronous reset of both shift and storage registers - critical for deterministic power-up initialization. |
| G (Pin 8) | Active-low output enable | Global PWM dimming control; high = all outputs forced off, low = output buffers transparent to storage register. |
| GND (Pin 16) | Power ground reference | Primary thermal and electrical return path; must connect to large copper pour for thermal dissipation. |
| RCK (Pin 10) | Storage register clock | Rising edge transfers shift register contents to output latches - decouples data loading from output update timing. |
| SRCK (Pin 15) | Shift register clock | Rising edge shifts SER_IN data into shift register; falling edge clocks SER_OUT for cascading. |
| SER_OUT (Pin 9) | Serial data output | Feeds next device in chain; phase-inverted relative to SRCK for improved inter-device timing margin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to 125°C ambient operation - meets automotive cockpit and under-hood temperature requirements. |
| Enhanced cascading architecture | SER_OUT toggles on SRCK falling edge - eliminates race conditions when chaining multiple TLC6C598QPWRQ1 devices. |
| Thermal shutdown with hysteresis | Shuts down at 175°C (typ), recovers at 160°C (typ) - prevents thermal runaway while allowing graceful recovery after transient overload. |
| Slow output switching | tr = 210 ns, tf = 128 ns - reduces radiated emissions to meet CISPR 25 Class 5 automotive EMC limits. |
| Single-pin register clear | CLR pin asynchronously clears both shift and storage registers - simplifies MCU firmware initialization sequence. |
| High-voltage drain tolerance | 40 V DMOS outputs - eliminates need for external TVS or clamp diodes in 24 V battery systems experiencing load dump. |
Applications
| Instrumentation Cluster | Tell-Tale Lamps |
|---|---|
Use Scenario: Driving segmented backlighting and warning indicators in digital instrument panels with variable ambient lighting conditions. IC Role / Device Role / Timing Role: Low-side LED sink driver receiving serialized commands from MCU; provides precise per-channel on/off control and global PWM dimming via G pin. Use Value: 50 mA per channel supports bright, uniform illumination; 40 V rating handles 24 V bus transients without protection circuitry. | Use Scenario: Controlling status LEDs for brake, oil, ABS, and airbag warnings in passenger vehicle dashboards. IC Role / Device Role / Timing Role: Automotive-qualified serial interface LED driver with AEC-Q100 Grade 1 certification and thermal fault protection. Use Value: Built-in thermal shutdown ensures fail-safe behavior during prolonged fault conditions; slow switching minimizes EMI interference with nearby CAN or LIN buses. |
| LED Illumination Control | Multi-Stage LED Arrays |
Use Scenario: Managing interior ambient lighting, map lights, and door courtesy lamps with centralized microcontroller control. IC Role / Device Role / Timing Role: Serial-input, parallel-output power shift register converting MCU GPIO signals into eight independent LED sink paths. Use Value: 3 V–5.5 V VCC range allows direct interfacing with 3.3 V MCUs; low quiescent current (≤1 μA) extends battery life in always-on modules. | Use Scenario: Expanding LED channel count beyond 8 using daisy-chained TLC6C598QPWRQ1 devices in headlight or taillight modules. IC Role / Device Role / Timing Role: Cascadable shift register with SER_OUT synchronized to SRCK falling edge - enables deterministic timing across multiple ICs. Use Value: Eliminates inter-device clock skew issues; supports >100 LED channels with single MCU SPI interface and minimal PCB routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC6C5912QPWRQ1 | 12-channel version with identical pinout, timing, and specs - adds four extra DRAIN outputs (DRAIN8–DRAIN11). | Supports larger LED arrays without increasing board area or controller complexity. | Select when >8 channels required and PCB layout allows same footprint expansion. |
| TPIC6B595QPWRQ1 | Same 8-channel architecture but lacks thermal shutdown and has higher rDS(on) (10 Ω typical at 5 V); not qualified for Grade 1 temp range. | Lower cost alternative for non-safety-critical, lower-temperature applications (e.g., infotainment bezels). | Choose only if thermal protection and extended temperature range are not required. |
Compared with TLC6C5912QPWRQ1, the TLC6C598QPWRQ1 offers optimal channel count for compact instrumentation designs; versus TPIC6B595QPWRQ1, it provides mandatory AEC-Q100 Grade 1 compliance and integrated thermal safety - critical for functional safety in automotive lighting.
Availability
TLC6C598QPWRQ1 is available at Aetrix Electronics and suitable for automotive instrumentation clusters, tell-tale lamp systems, and LED illumination control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC6C598QPWRQ1 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, embedded processing, and automotive electronics, with leadership in high-reliability power management and interface solutions.
The TLC6C598QPWRQ1 belongs to TI's automotive-qualified Power Logic LED driver family, designed specifically for robust, EMI-conscious LED control in safety-critical vehicle subsystems such as instrument clusters and warning indicators.
FAQ
What is the maximum continuous sink current per channel for the TLC6C598QPWRQ1?
The TLC6C598QPWRQ1 delivers 50 mA continuous sink current per channel when VCC = 5 V and ambient temperature is 25°C. At elevated temperatures (e.g., 125°C), the current capability decreases due to thermal derating - for example, rDS(on) rises to 14.5 Ω at 125°C, limiting practical current to ~30 mA under worst-case thermal conditions. The TLC6C598QPWRQ1 datasheet specifies this derating curve in Section 6.5.
Does the TLC6C598QPWRQ1 support daisy-chaining with other identical devices?
Yes, the TLC6C598QPWRQ1 supports reliable daisy-chaining via its SER_OUT pin, which clocks data out on the falling edge of SRCK. This phase inversion provides additional hold time for the next device in the chain, mitigating timing violations caused by PCB trace skew or EMI. The TLC6C598QPWRQ1's enhanced cascading architecture is explicitly validated in TI's application note SLIS142D Section 8.3.6.
What is the purpose of the G (output enable) pin on the TLC6C598QPWRQ1?
The G pin is an active-low global output enable that controls all eight DMOS drain outputs simultaneously. When G is high, all outputs are forced low and LEDs turn off regardless of register content; when G is low, output buffers become transparent to the storage register, enabling per-channel control. This pin also serves as the primary interface for global PWM dimming in the TLC6C598QPWRQ1, allowing brightness adjustment without retransmitting serial data.
Is thermal shutdown protection built into the TLC6C598QPWRQ1?
Yes, the TLC6C598QPWRQ1 includes fully integrated thermal shutdown protection with a typical trip point of 175°C and 15°C hysteresis. When junction temperature exceeds the threshold, the device forces all outputs into high-impedance (open) state to prevent damage. Recovery occurs automatically once the die cools below ~160°C. This function is documented in Section 8.3.1 and electrical characteristics Table 6.5 of the TLC6C598QPWRQ1 datasheet.
What package options are available for the TLC6C598QPWRQ1?
The TLC6C598QPWRQ1 is offered in two automotive-qualified packages: 16-pin TSSOP (PW) with body dimensions 5.00 mm × 4.40 mm, and 16-pin SOIC (D) measuring 9.90 mm × 3.91 mm. Both packages support the full –40°C to 125°C operating range and are RoHS-compliant. Package-specific thermal metrics (e.g., RθJA = 129.4°C/W for PW, 100°C/W for D) are detailed in Section 6.4 of the TLC6C598QPWRQ1 datasheet.
TLC6C598QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Power Switch
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 8
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 50mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
TLC6C598QPWRQ1 FAQ
1.How can I place an order for TLC6C598QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC6C598QPWRQ1 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 TLC6C598QPWRQ1 reliable?
The price and inventory of TLC6C598QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC6C598QPWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC6C598QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC6C598QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC6C598QPWRQ1?
TLC6C598QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC6C598QPWRQ1 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 TLC6C598QPWRQ1?
For technical support, including TLC6C598QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC6C598QPWRQ1 requirements.
6.How does Aetrix verify that TLC6C598QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC6C598QPWRQ1 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 TLC6C598QPWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC6C598QPWRQ1?
All TLC6C598QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC6C598QPWRQ1, 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 TLC6C598QPWRQ1 part is unused and in its original packaging.
Return procedure for TLC6C598QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC6C598QPWRQ1 Tags
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