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Texas Instruments TCA6507RUER
- Part No.:
- TCA6507RUER
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-XFQFN
- Datasheet:
-
TCA6507RUER.pdf
- Description:
- IC LED DRVR LIN I2C 40MA 12X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,985
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Product details
Overview
TCA6507RUER from Texas Instruments is a low-voltage 7-bit I²C/SMBus LED driver IC with programmable intensity control, fade/blink timing, and shutdown capability. It features seven open-drain outputs (P0–P6), supports 1.65 V to 3.6 V supply, sinks up to 40 mA per output, and operates across –40°C to +85°C. It is used in mobile phone status lighting, laptop keyboard backlighting, and HMI indicator systems.
For engineers reviewing the TCA6507RUER datasheet, TCA6507RUER pinout, TCA6507RUER application, or TCA6507RUER equivalent, key selection considerations include its dual-bank PWM architecture, 16-step intensity resolution, 5.5-V tolerant outputs, EN-controlled shutdown, and compatibility with standard/fast-mode I²C (up to 400 kHz).
Technical Context
The TCA6507RUER integrates two independent PWM modules (PWM0 and PWM1) driving two LED banks, each with fully programmable blink/fade rates and maximum intensity. Its internal oscillator runs at 28–58 kHz, enabling ~125-Hz PWM output with ~8-ms period for smooth visual transitions.
It uses three select registers (Select0–Select2) to configure each of the seven outputs into ON/OFF/blink/fade modes. The master intensity (ALD) value-stored in the One-Shot/Master Intensity register-can override individual bank settings to globally scale brightness while preserving programmed fade/blink behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - compatible with modern low-voltage microcontrollers and SoCs without level-shifting |
| Output Sink Current | 40 mA max per port - sufficient to drive standard LEDs directly without external drivers |
| I²C Interface | Standard/fast-mode (100/400 kHz) - supports common embedded bus speeds with 400-pF max bus capacitance |
| Intensity Resolution | 16 steps (0–15) - enables fine-grained brightness control for perceptually uniform dimming |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments |
| Standby Current | 3 μA max (VCC ≥1.96 V) - enables ultra-low-power operation during system sleep states |
| Output Voltage Tolerance | 5.5 V - allows LED anodes to be connected to higher-voltage rails (e.g., 5 V or 3.3 V) independently of VCC |
Pinout & Package
The TCA6507RUER is packaged in a 12-pin X2QFN (RUE) measuring 2.00 mm × 1.40 mm with 0.4-mm pitch and wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-low shutdown control; resets registers and disables oscillator when pulled low ≥60 μs |
| GND | Ground reference | Primary return path for all internal logic and output sink current |
| P0–P6 | Open-drain output ports | Seven individually configurable outputs; each sinks up to 40 mA and tolerates 5.5 V |
| SDA | I²C bidirectional data line | Open-drain I/O with internal clamp diodes; requires external pull-up to VCC |
| SCL | I²C clock input | Input-only clock line; requires external pull-up to VCC |
| VCC | Logic supply | Powers I²C interface, oscillator, and control logic; provides voltage-level translation for SDA/SCL |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM banks | Enables simultaneous but distinct blink/fade profiles for two LED groups (e.g., power vs. status indicators) |
| Programmable fade-ON/OFF timing | Smooth perceptual transitions via adjustable ramp rates-reduces visual flicker and improves user experience |
| Master intensity override (ALD) | Single 4-bit register scales all outputs uniformly-simplifies ambient light adaptation without reprogramming banks |
| Hot-insertion support | Robust I/O structure prevents bus contention or latch-up during live connection-enables field-replaceable modules |
| No glitch on power-up | Outputs remain high-impedance until VCC exceeds VPOR (1.1–1.4 V)-prevents unintended LED activation at startup |
Applications
| Mobile Phone Status Indicators | Laptop Keyboard Backlighting |
|---|---|
Use Scenario: Driving multicolor notification LEDs (e.g., charging, message, missed call) with distinct blink patterns and intensity levels. IC Role / Device Role / Timing Role: LED driver with dual-bank PWM control-BANK0 manages charging state, BANK1 handles communication alerts. Use Value: Offloads blink timing and intensity scaling from the baseband processor, reducing firmware overhead and improving battery life. |
Use Scenario: Providing adaptive backlighting for QWERTY keyboards under varying ambient light conditions. IC Role / Device Role / Timing Role: Programmable LED driver using ALD register to globally adjust brightness while preserving per-key fade behavior. Use Value: Enables smooth, stepless dimming without CPU intervention-supports responsive UI feedback during typing. |
| Industrial HMI Panel Indicators | USB-C Docking Station Status Lights |
Use Scenario: Controlling status LEDs for power, fault, and connectivity on ruggedized operator interfaces. IC Role / Device Role / Timing Role: General-purpose open-drain output expander-P0–P6 configured as ON/OFF or blinking outputs per IEC 61000-4-2 ESD immunity requirements. Use Value: Meets 2-kV HBM ESD rating and supports 5.5-V tolerant outputs-enables direct connection to 5-V indicator LEDs in noisy environments. |
Use Scenario: Managing multi-state status lights (e.g., charging, data transfer, video output) on compact USB-C hubs. IC Role / Device Role / Timing Role: Low-quiescent-current LED driver-EN pin synchronized with USB-C PD controller to enter shutdown during port disconnect. Use Value: Achieves <3 μA standby current-extends host system battery life during peripheral idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9635DP | 16-channel, 12-bit PWM resolution, integrated constant-current sinks; requires external current-setting resistors | Better suited for high-channel-count RGB LED arrays; lacks ALD master intensity override | Choose PCA9635DP when precise current matching across >8 LEDs is required and board space permits larger HTSSOP24 package |
| LP55231TMX/NOPB | 9-channel, programmable engine with autonomous pattern execution; includes internal 256-step gamma correction | Designed for complex lighting effects (e.g., breathing, chasing); higher BOM cost and larger 20-pin WQFN | Choose LP55231TMX/NOPB for self-contained lighting sequences where MCU offload exceeds simple blink/fade needs |
Compared with PCA9635DP and LP55231TMX/NOPB, the TCA6507RUER offers optimal balance of compact size (12-pin X2QFN), ultra-low standby current (<3 μA), and dual-bank flexibility-making it ideal for space-constrained, battery-sensitive devices requiring reliable, low-overhead LED control.
Availability
TCA6507RUER is available at Aetrix Electronics and suitable for mobile phone indicator systems, laptop HMI subsystems, and industrial panel designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for TCA6507RUER 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 digital signal technologies, with over 90 years of innovation in power management and interface solutions.
The TCA6507RUER belongs to TI's LED driver and I²C peripheral product line, designed specifically for low-power, space-constrained human interface lighting applications in portable and industrial electronics.
FAQ
What is the maximum sink current per output on the TCA6507RUER?
The TCA6507RUER supports up to 40 mA sink current per output (P0–P6) under recommended operating conditions (VOL ≤ 0.6 V at VCC = 1.8–3.6 V). This allows direct driving of standard LEDs without external transistors. Total device sink current must not exceed 200 mA, and thermal limits must be observed per RθJA = 181°C/W for the RUE package.
Does the TCA6507RUER support fast-mode I²C communication?
Yes, the TCA6507RUER supports fast-mode I²C at up to 400 kHz, with specified timing parameters including tSCH ≥ 0.6 μs, tSCL ≥ 1.3 μs, and bus capacitance ≤ 400 pF. Its I²C interface is SMBus-compatible and includes glitch filtering on SCL/SDA to ensure robust operation in electrically noisy environments.
How does the enable (EN) pin function on the TCA6507RUER?
The EN pin on the TCA6507RUER is an active-low enable input that places the device in shutdown mode when pulled low for ≥60 μs. In shutdown, the oscillator stops, all outputs go high-impedance, and internal registers reset to default states. Pulling EN high resumes normal operation with oscillator start-up time ≤5 ms.
Can unused outputs on the TCA6507RUER be used as general-purpose I/O?
Yes, any of the seven P-port outputs (P0–P6) not assigned to LED driving can be configured as general-purpose open-drain outputs via the Select registers. Each functions identically to the LED outputs-capable of sinking up to 40 mA and tolerating 5.5 V-making them suitable for driving logic-level signals, small relays, or discrete MOSFET gates.
What is the purpose of the ALD (ambient light detection) register in the TCA6507RUER?
The ALD register (lower 4 bits of the One-Shot / Master Intensity register) sets a global master intensity level that can override the maximum brightness values of both PWM0 and PWM1 banks. When enabled, it uniformly scales all LED outputs-preserving programmed blink/fade timing while adapting overall brightness to ambient light conditions without reconfiguring individual banks.
TCA6507RUER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- -
- Number of Outputs:
- 7
- Voltage - Supply (Min):
- 1.65V
- Voltage - Supply (Max):
- 3.6V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 40mA
- Frequency:
- 100kHz, 400kHz
- Dimming:
- I2C, SMBus
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-X2QFN (2x1.4)
TCA6507RUER FAQ
1.How can I place an order for TCA6507RUER through Aetrix?
Please submit a Request for Quotation (RFQ) for TCA6507RUER 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 TCA6507RUER reliable?
The price and inventory of TCA6507RUER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCA6507RUER is usually 5 days.
3.What payment methods are accepted for TCA6507RUER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCA6507RUER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCA6507RUER?
TCA6507RUER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCA6507RUER 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 TCA6507RUER?
For technical support, including TCA6507RUER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCA6507RUER requirements.
6.How does Aetrix verify that TCA6507RUER is sourced from the original manufacturer or authorized distributors?
All TCA6507RUER 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 TCA6507RUER meets industry standards.
7.What is the process for return or replacement of TCA6507RUER?
All TCA6507RUER units undergo pre-shipment inspection (PSI). If there is an issue with TCA6507RUER, 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 TCA6507RUER part is unused and in its original packaging.
Return procedure for TCA6507RUER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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