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Texas Instruments TLC5927QPWPRQ1
- Part No.:
- TLC5927QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC5927QPWPRQ1.pdf
- Description:
- IC LED DRVR LIN 120MA 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
TLC5927QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified 16-channel constant-current LED sink driver for automotive lighting and display systems. It delivers precise 5–120 mA per channel via external R-EXT resistor, supports 3.0–5.5 V logic supply, features open-load/short-load/overtemperature detection, and operates with up to 30 MHz serial clock - enabling high-refresh-rate LED signage and adaptive headlamp control.
For engineers reviewing the TLC5927QPWPRQ1 datasheet, TLC5927QPWPRQ1 pinout, TLC5927QPWPRQ1 application, or TLC5927QPWPRQ1 equivalent, this device is selected for automotive-grade LED current regulation where fault diagnostics (open/short detection), thermal robustness (–40°C to 125°C ambient), and cascaded serial interface are required.
Technical Context
The TLC5927QPWPRQ1 integrates a 16-bit shift register, output latches, and 16 independent constant-current sinks with per-channel error monitoring. Its architecture supports daisy-chained configuration using SDI/SDO, with LE(ED1) controlling data latching and OE(ED2) enabling/disabling outputs or entering Special Mode for diagnostics and current gain adjustment.
Unlike the TLC5926-Q1, the TLC5927QPWPRQ1 adds short-to-VLED detection (trigger threshold 2.3–3.2 V, return threshold 1.9 V) alongside open-load and overtemperature detection - all reported via a single 16-bit error status register readable in Special Mode. Thermal protection includes both global shutdown (~170°C) and per-channel shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sink outputs (OUT0–OUT15) |
| Output current range | 5 mA to 120 mA per channel, set by single R-EXT resistor |
| Current accuracy | < ±6% channel-to-channel and die-to-die at 10–50 mA |
| Max output voltage | 17 V - supports multi-LED strings or high-VF white/amber LEDs |
| Error detection | Open-load, short-to-VLED (TLC5927 only), and overtemperature on all 16 channels |
| Clock frequency | Up to 30 MHz - enables fast refresh in large LED matrices |
| Supply voltage | 3.0 V to 5.5 V logic supply (VDD); output stage tolerant to 17 V (VLED) |
Pinout & Package
Package: HTSSOP-24 (PWP) with exposed thermal pad (must be soldered to GND for thermal performance and EMI control). Body size: 7.80 mm × 4.40 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return for logic and current-sink paths; thermal pad must connect to PCB ground plane |
| SDI (Pin 2) | Serial data input | Accepts 3.3/5 V CMOS-level data for shift register loading; Schmitt-trigger input |
| CLK (Pin 3) | Clock input | Rising-edge triggered; max 30 MHz; drives internal shift register and timing |
| LE(ED1) (Pin 4) | Data latch / mode control | Latches shift register to output latches in Normal Mode; selects Special Mode function when pulsed with OE(ED2) |
| OUT0–OUT15 (Pins 5–20) | Constant-current sink outputs | Each independently controlled; sink up to 120 mA; support floating unused channels |
| VDD (Pin 24) | Logic supply | 3.0–5.5 V power for internal logic, shift register, and control circuitry |
| R-EXT (Pin 23) | Current-setting reference | Connects external resistor to set all 16 output currents simultaneously |
| SDO (Pin 22) | Serial data output | Shifts out latched data or error status code; enables daisy-chaining |
| OE(ED2) (Pin 21) | Output enable / mode trigger | Active-low output enable; one-clock pulse initiates Special Mode for diagnostics or gain programming |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient), HBM ±2 kV ESD |
| Short-to-VLED detection | Exclusive to TLC5927QPWPRQ1; detects LED short-circuit via VOUT threshold comparison (2.3–3.2 V trigger) |
| Per-channel thermal shutdown | Individual channel overtemperature protection prevents localized failure without disabling entire IC |
| 256-step programmable gain | Runtime-adjustable global current scaling via 8-bit configuration code in Special Mode |
| Open-load detection | Validated per-channel during active drive; requires IOUT ≥ 0.5 × target current to detect open condition |
Applications
| Automotive Adaptive Front Lighting | Commercial LED Video Billboard |
|---|---|
Use Scenario: Dynamic LED headlamp beam shaping with real-time fault monitoring. IC Role / Device Role / Timing Role: Constant-current sink driver with integrated open/short diagnostics for each LED segment in matrix headlamps. Use Value: Enables ASIL-B–compatible LED control by reporting per-channel faults (e.g., open filament or shorted trace) without external sensing circuitry. |
Use Scenario: High-resolution outdoor LED display requiring uniform brightness across thousands of pixels. IC Role / Device Role / Timing Role: Cascaded LED driver providing synchronized 16-channel current control per tile module. Use Value: Delivers <±6% channel matching and 30 MHz update rate to eliminate visible flicker and color banding in large-format displays. |
| Industrial Control Panel Indicators | Appliance Status Lighting |
Use Scenario: Operator interface with redundant LED indicators for safety-critical machine states. IC Role / Device Role / Timing Role: Fault-aware LED driver ensuring indicator integrity in white-goods and factory HMIs. Use Value: Detects open-circuit failures in panel LEDs before end-user notice, supporting predictive maintenance logs via SDO error readback. |
Use Scenario: Energy-efficient status lighting in refrigerators, ovens, and washing machines. IC Role / Device Role / Timing Role: Low-power LED sink driver operating from 3.3 V supply with thermal derating at elevated cabinet temperatures. Use Value: Maintains consistent LED brightness across –40°C to +85°C ambient while reducing BOM count via single-R-EXT current setting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5926QPWPRQ1 | Lacks short-to-VLED detection; identical pinout, package, and basic functionality | Suitable where only open-load and thermal faults require monitoring (e.g., simple signage) | Select when short-circuit diagnostics are unnecessary and cost optimization is prioritized |
| MAX7219CWG+T | 8-channel, SPI interface, integrated scan controller; no short/open detection; 5.5 V max VLED | Targeted at 7-segment/matrix displays with built-in decoding; not automotive-qualified | Choose for non-automotive, lower-channel-count applications needing integrated display control |
Compared with TLC5926QPWPRQ1, the TLC5927QPWPRQ1 adds critical short-circuit detection for enhanced system reliability in automotive lighting, while MAX7219CWG+T offers simpler integration for non-automotive 8-channel displays but lacks AEC-Q100 qualification and per-channel diagnostics.
Availability
TLC5927QPWPRQ1 is available at Aetrix Electronics and suitable for automotive LED lighting, commercial video billboards, and industrial HMI applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for TLC5927QPWPRQ1 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-grade ICs with decades of automotive qualification expertise.
The TLC592x-Q1 product line was designed specifically for AEC-Q100-compliant LED current regulation in harsh automotive environments - emphasizing fault resilience, thermal robustness, and daisy-chain scalability for lighting and display systems.
FAQ
What is the maximum output voltage rating for TLC5927QPWPRQ1?
The TLC5927QPWPRQ1 supports up to 17 V at its OUT0–OUT15 pins (VLED), enabling direct driving of multi-LED strings or high-forward-voltage LEDs without external voltage translation. This rating is specified under absolute maximum conditions and applies across the full operating temperature range.
How does short-to-VLED detection work in TLC5927QPWPRQ1?
In TLC5927QPWPRQ1, short-to-VLED detection monitors output voltage (VOUT) during active drive: if VOUT exceeds 2.3–3.2 V (trigger threshold), a short is flagged; if VOUT falls below 1.9 V (return threshold), the fault clears. This feature is absent in TLC5926-Q1 and requires the channel to be actively sinking current.
Can TLC5927QPWPRQ1 be used without an external R-EXT resistor?
No - the TLC5927QPWPRQ1 requires an external R-EXT resistor connected to Pin 23 to set output current. Omitting R-EXT disables current regulation; the device will not deliver defined sink current. Typical values range from 180 Ω (120 mA) to 720 Ω (26 mA) depending on target current and VDD.
What is the purpose of the exposed thermal pad on TLC5927QPWPRQ1?
The exposed thermal pad on the HTSSOP-24 package of TLC5927QPWPRQ1 must be soldered to a PCB ground plane to ensure proper thermal dissipation and EMI suppression. TI specifies it as a mandatory connection - not optional - to maintain junction temperature within safe limits under full 120 mA/channel load.
Does TLC5927QPWPRQ1 support daisy-chaining with other LED drivers?
Yes - TLC5927QPWPRQ1 supports seamless daisy-chaining via SDI-to-SDO interconnection. Serial data shifts through multiple devices using a common CLK and LE(ED1), with SDO of one device feeding SDI of the next. This enables scalable LED systems with minimal MCU GPIO usage.
TLC5927QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- -
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 120mA
- Frequency:
- 30MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-HTSSOP
TLC5927QPWPRQ1 FAQ
1.How can I place an order for TLC5927QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5927QPWPRQ1 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 TLC5927QPWPRQ1 reliable?
The price and inventory of TLC5927QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5927QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC5927QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5927QPWPRQ1 transactions.
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4.How is shipping managed for TLC5927QPWPRQ1?
TLC5927QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5927QPWPRQ1 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 TLC5927QPWPRQ1?
For technical support, including TLC5927QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5927QPWPRQ1 requirements.
6.How does Aetrix verify that TLC5927QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC5927QPWPRQ1 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 TLC5927QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC5927QPWPRQ1?
All TLC5927QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC5927QPWPRQ1, 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 TLC5927QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC5927QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5927QPWPRQ1 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
-
BCR421UFD-7
Diodes Incorporated
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