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Texas Instruments TCA6507ZXUR
- Part No.:
- TCA6507ZXUR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-UFBGA
- Datasheet:
-
TCA6507ZXUR.pdf
- Description:
- IC LED DRVR LIN I2C 40MA 12BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,599
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Product details
Overview
TCA6507ZXUR 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, delivers up to 40 mA per output, and operates with 5.5-V tolerant outputs - enabling direct LED drive in mobile UI backlighting and status indication systems.
For engineers reviewing the TCA6507ZXUR datasheet, TCA6507ZXUR pinout, TCA6507ZXUR application, or TCA6507ZXUR equivalent, this device is selected for embedded LED control where processor offloading, low standby current (<15 µA), dual-bank independent dimming, and hot-insertion support are required.
Technical Context
The TCA6507ZXUR integrates two independent PWM modules (PWM0 and PWM1) driving two LED banks, each with fully programmable blink/fade rates and 16-step intensity control. Its internal oscillator runs at 28–58 kHz, generating an ~125-Hz effective PWM frequency (8-ms period) for smooth visual transitions.
All seven outputs are open-drain with 5.5-V tolerance, allowing LEDs to be powered from higher rails than VCC. The EN pin provides hardware shutdown with register reset and 60-µs minimum pulse width requirement; I²C interface supports Standard (100 kHz) and Fast Mode (400 kHz) timing with 400-pF bus capacitance limit.
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 |
| Output Current (per pin) | 40 mA max - sufficient for driving indicator LEDs without external drivers |
| Output Voltage Tolerance | 5.5 V - enables LED anodes to connect to higher-voltage rails (e.g., 5 V or 3.3 V) while VCC remains at 1.8 V |
| I²C Speed Support | Up to 400 kHz Fast Mode - reduces bus transaction time for dynamic brightness updates |
| Standby Current | 3 µA typical at 1.96–3.6 V - critical for battery-powered devices requiring long idle periods |
| Intensity Resolution | 16 steps (0–15) - provides perceptually linear brightness control via PWM duty cycle scaling |
| Oscillator Frequency | 28–58 kHz - determines base timing for all fade/blink functions and ensures stable internal clocking |
Pinout & Package
The TCA6507ZXUR uses the 12-pin BGA MICROSTAR JUNIOR (ZXU) package, measuring 2.00 mm × 2.50 mm, with bottom-side solder balls and no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | GND | Ground reference for all internal logic and output drivers; must be low-impedance connection |
| A2 | SDA | Open-drain bidirectional I²C data line; requires external pull-up to VCC |
| A3 | SCL | Input-only I²C clock line; requires external pull-up to VCC |
| A4 | VCC | Logic supply for registers, oscillator, and I²C interface; also provides voltage-level translation |
| B1 | P2 | Open-drain LED/output driver - sinks current when active; 5.5-V tolerant |
| B2 | EN | Active-low enable input; asserts shutdown and resets registers when pulled low ≥60 µs |
| B3 | P0 | Open-drain LED/output driver - bank-assignable via configuration registers |
| B4 | P6 | Open-drain LED/output driver - supports fade/blink modes per bank assignment |
| C1 | P1 | Open-drain LED/output driver - independently controllable within BANK0 or BANK1 |
| C2 | P3 | Open-drain LED/output driver - used for status indicators or UI feedback elements |
| C3 | P4 | Open-drain LED/output driver - supports programmable fade-on/fade-off timing |
| C4 | P5 | Open-drain LED/output driver - configurable as general-purpose output if not used for LEDs |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LED banks | Enables simultaneous but distinct blink/fade profiles for two LED groups (e.g., power + alert) |
| 16-step master intensity control | Allows fine-grained ambient light-adaptive brightness scaling across all outputs |
| Hardware fade-on/fade-off timing | Eliminates MCU involvement in transition smoothing - reduces firmware overhead and jitter |
| Hot-insertion support | Permits safe connection/disconnection while system is powered - essential for modular accessories |
| 5.5-V tolerant outputs | Decouples LED supply rail from logic VCC - simplifies mixed-voltage board design |
Applications
| Mobile UI Backlighting | System Status Indication |
|---|---|
Use Scenario: Driving multi-color status LEDs on smartphone front bezels or side keys with synchronized fade effects. IC Role / Device Role / Timing Role: LED driver managing P0–P6 outputs in BANK0/BANK1 with independent 125-Hz PWM and 16-step intensity scaling. Use Value: Offloads CPU from real-time LED timing, reduces display subsystem power by >90% vs software PWM, and enables perceptually smooth transitions. |
Use Scenario: Providing user-visible power-on, charging, and error states in portable medical devices. IC Role / Device Role / Timing Role: General-purpose open-drain output expander with hardware blink control and EN-triggered reset. Use Value: Guarantees deterministic LED behavior during brown-out or reset events; eliminates firmware race conditions in safety-critical status signaling. |
| Laptop Keyboard Illumination | Industrial HMI Panels |
Use Scenario: Adaptive keyboard backlighting responding to ambient light sensor input via I²C. IC Role / Device Role / Timing Role: Intensity controller using ALD register override to globally scale BANK0/BANK1 brightness without reprogramming individual outputs. Use Value: Enables single-register ambient compensation across all keys - cuts I²C traffic by 7× vs per-LED updates. |
Use Scenario: Driving high-reliability status LEDs on factory-floor HMIs exposed to ESD and voltage transients. IC Role / Device Role / Timing Role: Robust LED driver with ±2000-V HBM ESD rating, 5.5-V tolerant outputs, and glitch-filtered EN pin. Use Value: Survives repeated contact discharge in ungrounded environments; eliminates need for external TVS diodes on each LED line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCA6507PWR | TSSOP-14 package (5.00 mm × 4.40 mm); same electrical specs and register map | Requires larger PCB footprint and different reflow profile; no BGA assembly constraints | Select when manual assembly, prototyping, or thermal management via exposed pad is prioritized over miniaturization. |
| PCA9634DGGR | 8-channel, 25-mA sink, I²C LED driver with built-in 12-bit PWM; no fade-on/fade-off hardware engine | Lacks dedicated fade timing logic - fade effects require host MCU intervention or external timers | Choose when higher channel count and finer PWM resolution are needed, and fade timing can be managed in firmware. |
Compared with TCA6507ZXUR, TCA6507PWR offers identical functionality in a larger, leaded package suited for through-hole or hand-soldered designs, while PCA9634DGGR trades fade automation for greater PWM granularity and one extra channel - making it preferable only when fade timing is not required or can be implemented externally.
Availability
TCA6507ZXUR is available at Aetrix Electronics and suitable for mobile UI backlighting, industrial HMI status indication, laptop keyboard illumination, and portable medical device signaling requiring stable component supply and long-term lifecycle support.
Supply support for TCA6507ZXUR 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 power management, signal chain, and interface solutions.
The TCA6507ZXUR belongs to TI's I²C-compatible LED driver product line, designed specifically to reduce MCU load in portable and space-constrained systems requiring autonomous LED control with minimal external components.
FAQ
What is the maximum sink current per output on the TCA6507ZXUR?
The TCA6507ZXUR supports up to 40 mA per output (P0–P6) under recommended operating conditions (VOL ≤ 0.6 V at VCC = 1.8–3.6 V). This is verified in the Electrical Characteristics table (Section 6.5) of the official datasheet. Exceeding this current risks violating VOL specifications and thermal limits. The TCA6507ZXUR total sink current must remain ≤200 mA across all active outputs.
Does the TCA6507ZXUR support both Standard and Fast Mode I²C communication?
Yes, the TCA6507ZXUR supports Standard Mode (up to 100 kHz) and Fast Mode (up to 400 kHz) I²C operation, as confirmed in Section 6.6 of the datasheet. Timing parameters including tsch, tscl, tsds, and tbuf are explicitly specified for both modes. Bus capacitance must not exceed 400 pF for reliable communication at either speed.
How does the EN pin function on the TCA6507ZXUR?
The EN pin on the TCA6507ZXUR is an active-low enable input. When pulled low for ≥60 µs, it places the device in shutdown mode - disabling the oscillator, resetting all registers to default values, and forcing all outputs into high-impedance state. This action also initializes the I²C/SMBus state machine. The EN pin includes internal glitch filtering to prevent spurious shutdowns.
Can unused outputs on the TCA6507ZXUR be repurposed as general-purpose open-drain outputs?
Yes, the TCA6507ZXUR allows any of its seven outputs (P0–P6) to be configured as general-purpose open-drain outputs instead of LED drivers. This is achieved by setting the corresponding bits in the Select0/Select1/Select2 registers to "OFF" or "ON" mode rather than blink/fade modes. Each output retains 5.5-V tolerance and 40-mA sink capability regardless of functional assignment.
What is the operating temperature range for the TCA6507ZXUR?
The TCA6507ZXUR is rated for continuous operation across an ambient temperature range of –40°C to +85°C, as specified in Section 6.3 (Recommended Operating Conditions) of the datasheet. Thermal performance is validated with RθJA = 155.2°C/W for the ZXU package, and all electrical characteristics (e.g., ICC, VOL, fINT) are guaranteed across this full range.
TCA6507ZXUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-UFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-BGA Microstar Junior (2.5x2)
TCA6507ZXUR FAQ
1.How can I place an order for TCA6507ZXUR through Aetrix?
Please submit a Request for Quotation (RFQ) for TCA6507ZXUR 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 TCA6507ZXUR reliable?
The price and inventory of TCA6507ZXUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCA6507ZXUR is usually 5 days.
3.What payment methods are accepted for TCA6507ZXUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCA6507ZXUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCA6507ZXUR?
TCA6507ZXUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCA6507ZXUR 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 TCA6507ZXUR?
For technical support, including TCA6507ZXUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCA6507ZXUR requirements.
6.How does Aetrix verify that TCA6507ZXUR is sourced from the original manufacturer or authorized distributors?
All TCA6507ZXUR 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 TCA6507ZXUR meets industry standards.
7.What is the process for return or replacement of TCA6507ZXUR?
All TCA6507ZXUR units undergo pre-shipment inspection (PSI). If there is an issue with TCA6507ZXUR, 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 TCA6507ZXUR part is unused and in its original packaging.
Return procedure for TCA6507ZXUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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