My Inquiry
My Account
Texas Instruments TCA6507PWR
- Part No.:
- TCA6507PWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TCA6507PWR.pdf
- Description:
- IC LED DRVR LIN I2C 40MA 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,366
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TCA6507PWR 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 TCA6507PWR datasheet, TCA6507PWR pinout, TCA6507PWR application, or TCA6507PWR 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-mode and fast-mode I²C buses up to 400 kHz.
Technical Context
The TCA6507PWR integrates two independent PWM modules (PWM0 and PWM1) driving two configurable LED banks, each with programmable blink/fade rates and maximum intensity. Its internal oscillator runs at 28–58 kHz, enabling ~125 Hz effective PWM frequency and ~8 ms period for smooth visual transitions.
All seven outputs are open-drain with 5.5-V tolerance and 40-mA sink capability. The EN pin provides hardware reset and shutdown, resetting registers and disabling the oscillator within 70 µs. I²C interface complies with SMBus specifications and supports both standard (100 kHz) and fast (400 kHz) modes with defined rise/fall time and bus capacitance limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - powers logic, oscillator, and I²C interface; enables direct interfacing with low-voltage MCUs. |
| Output Sink Current | 40 mA max per port - sufficient to drive standard LEDs without external drivers; total P-port current limited to 200 mA. |
| I²C Speed Support | Up to 400 kHz fast mode - allows rapid configuration and state updates without MCU polling overhead. |
| Output Voltage Tolerance | 5.5 V - permits LED anodes to be connected to higher-voltage rails (e.g., 5 V or 3.3 V) while logic remains at 1.8 V. |
| Standby Current | 3 µA typical at 1.96–3.6 V - enables ultra-low-power operation during system sleep or display-off states. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments including handheld devices. |
| Intensity Resolution | 16 steps (4-bit ALD + bank-specific brightness registers) - provides granular dimming control for perceptually smooth brightness scaling. |
Pinout & Package
TCA6507PWR uses a 14-pin TSSOP package (5.00 mm × 4.40 mm) with exposed thermal pad (PW suffix). Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Supplies I²C logic, oscillator, and control circuitry; must be decoupled near the pin; provides voltage-level translation for SDA/SCL. |
| GND | Ground reference | Common return path for all internal circuits and output sink current; requires low-impedance connection to system ground plane. |
| SCL | I²C clock input | Input-only clock line; requires external pull-up to VCC; timing compliant with standard/fast-mode I²C specifications. |
| SDA | I²C bidirectional data | Open-drain I/O; requires external pull-up to VCC; supports ACK/NACK and multi-master arbitration. |
| EN | Enable/shutdown control | Active-low hardware reset; forces register reset and oscillator disable when held low ≥60 µs; enables rapid power-state transitions. |
| P0–P6 | LED/general-purpose outputs | Seven open-drain outputs; each independently configurable as ON/OFF/blink/fade via I²C; support 40-mA sink and 5.5-V tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM banks | Enables simultaneous but distinct blink/fade profiles for two LED groups (e.g., status + notification) without MCU intervention. |
| 16-step master intensity control | ALD register sets global brightness ceiling, allowing coordinated dimming across all outputs while preserving relative intensity ratios. |
| Programmable fade-on/fade-off timing | Configurable ramp rates per bank ensure perceptually smooth transitions-critical for user-facing indicators and ambient lighting. |
| Hardware shutdown via EN pin | Reduces supply current to ≤3 µA and resets internal state in <70 µs-ideal for battery-powered devices requiring deterministic low-power entry. |
| 5.5-V tolerant outputs | Allows direct connection of LED anodes to 3.3 V or 5 V rails while maintaining 1.8 V logic compatibility-eliminates level-shifter components. |
Applications
| Mobile Phone Status Indicators | Laptop Keyboard Backlighting |
|---|---|
|
Use Scenario: Driving multicolor status LEDs (charging, notification, mute) on compact smartphone front panels with minimal MCU resource usage. IC Role / Device Role / Timing Role: Offloads PWM timing and intensity sequencing from the application processor; manages synchronized blinking/fading using internal oscillators. Use Value: Reduces host CPU load by >90% compared to software-timed GPIO toggling; enables consistent, flicker-free visual feedback across varying system loads. |
Use Scenario: Controlling segmented white LED backlight zones beneath laptop keyboards under dynamic ambient light conditions. IC Role / Device Role / Timing Role: Acts as autonomous backlight controller; responds to ambient light sensor input (via MCU) to adjust global intensity (ALD) and local fade rates. Use Value: Delivers smooth, stepless brightness transitions across 16 intensity levels-improving perceived usability and reducing eye strain during low-light use. |
| Industrial HMI Panel Indicators | USB-C Docking Station Status Lighting |
|
Use Scenario: Providing fault, ready, and communication-status signals on ruggedized human-machine interface panels in factory automation equipment. IC Role / Device Role / Timing Role: Functions as general-purpose I²C port expander with LED-driving capability; outputs configured as steady ON/OFF or slow blink for status clarity. Use Value: Simplifies BOM by combining GPIO expansion and LED drive into one device; wide temperature range (–40°C to +85°C) ensures reliability in uncontrolled environments. |
Use Scenario: Managing multi-color status LEDs indicating USB-C power delivery negotiation, data link status, and peripheral connection on compact docking stations. IC Role / Device Role / Timing Role: Coordinates color-coded blink patterns (e.g., amber pulse for PD handshake, green solid for active link) using two independent PWM banks. Use Value: Enables precise, synchronized visual signaling without dedicated MCU timers-critical for real-time USB PD protocol feedback and user experience consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9635PW | 16-channel, 12-bit PWM resolution, higher channel count, no fade-on/fade-off control; requires external current-limiting resistors for LEDs. | Better suited for high-channel-count RGB LED arrays; lacks built-in fade timing and dual-bank independence. | Select PCA9635PW when >7 outputs or finer grayscale control (4096 steps) is required; avoid if fade transitions or compact 7-output design is critical. |
| LP55231TMX/NOPB | Three independent PWM engines, integrated current sinks (25 mA), programmable engine sequencing, but no EN pin for hardware shutdown. | Optimized for RGB LED engines with pattern memory; lacks 5.5-V tolerant outputs and simple bank-based control. | Choose LP55231TMX/NOPB for complex multi-color lighting effects with stored sequences; prefer TCA6507PWR for deterministic EN-triggered shutdown and robust 40-mA sink capability. |
Compared with PCA9635PW and LP55231TMX/NOPB, the TCA6507PWR offers unique dual-bank fade/blink autonomy, hardware EN shutdown, and 5.5-V tolerant outputs-making it optimal for cost-sensitive, space-constrained designs requiring smooth visual transitions and rapid power-state control.
Availability
TCA6507PWR is available at Aetrix Electronics and suitable for mobile phone UI lighting, laptop keyboard backlighting, industrial HMI indicators, and USB-C docking station status signaling requiring stable component supply and long-term production continuity.
Supply support for TCA6507PWR 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 connectivity technologies, with leadership in power management and interface solutions.
The TCA6507PWR belongs to TI's I²C-compatible LED driver product line, designed specifically to reduce MCU firmware burden in portable and embedded systems requiring reliable, low-power LED control with perceptually smooth transitions.
FAQ
What is the maximum sink current per output on the TCA6507PWR?
The TCA6507PWR supports up to 40 mA sink current per output (P0–P6) under recommended operating conditions (VOL ≤ 0.6 V at 1.8–3.6 V supply). Total combined sink current across all ports must not exceed 200 mA to maintain safe thermal operation and specified VOL performance.
Does the TCA6507PWR require external pull-up resistors on SDA and SCL lines?
Yes, the TCA6507PWR requires external pull-up resistors on both SDA and SCL lines to VCC. These resistors establish valid logic-high levels and meet I²C bus timing requirements; values depend on bus capacitance and desired speed-typically 2.2 kΩ to 10 kΩ for standard-mode operation.
Can the TCA6507PWR drive LEDs powered from a 5-V rail?
Yes, the TCA6507PWR outputs are 5.5-V tolerant, allowing LED anodes to be connected to 5-V (or 3.3-V) supplies while the IC itself operates from a lower 1.65–3.6 V VCC rail-enabling mixed-voltage system designs without level shifters.
How does the EN pin affect register state in the TCA6507PWR?
Asserting EN low resets all internal registers-including select, brightness, and fade timing registers-to their default states and disables the oscillator. This hardware reset occurs within 70 µs and provides deterministic initialization without requiring I²C reconfiguration after wake-up.
What is the function of the ALD (ambient light detection) register in the TCA6507PWR?
The ALD register (lower 4 bits of the One-Shot / Master Intensity register) sets a global master intensity level that can override individual bank brightness settings. When enabled, it uniformly scales all LED outputs-allowing coordinated dimming in response to ambient light sensor input or user brightness controls.
TCA6507PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- 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:
- 14-TSSOP
TCA6507PWR FAQ
1.How can I place an order for TCA6507PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TCA6507PWR 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 TCA6507PWR reliable?
The price and inventory of TCA6507PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCA6507PWR is usually 5 days.
3.What payment methods are accepted for TCA6507PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCA6507PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCA6507PWR?
TCA6507PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCA6507PWR 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 TCA6507PWR?
For technical support, including TCA6507PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCA6507PWR requirements.
6.How does Aetrix verify that TCA6507PWR is sourced from the original manufacturer or authorized distributors?
All TCA6507PWR 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 TCA6507PWR meets industry standards.
7.What is the process for return or replacement of TCA6507PWR?
All TCA6507PWR units undergo pre-shipment inspection (PSI). If there is an issue with TCA6507PWR, 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 TCA6507PWR part is unused and in its original packaging.
Return procedure for TCA6507PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TCA6507PWR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
