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TCA6507

ACTIVE

7-bit 1.65- to 5.5-V I2C/SMBus LED driver with intensity control, shutdown & config registers

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Data sheet

TCA6507

ACTIVE
Data sheet Order now

Product details

Number of I/Os 7 Features (x3) PWM, Hot swap, LED driver, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Addresses 1 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
Number of I/Os 7 Features (x3) PWM, Hot swap, LED driver, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Addresses 1 Rating Catalog Frequency (max) (MHz) 0.4 Operating temperature range (°C) -40 to 85
TSSOP (PW) 14 32 mm² 5 x 6.4 X2QFN (RUE) 12 2.8 mm² 2 x 1.4
  • Seven LED Driver Outputs: ON, OFF, Blinking, Fading at Programmable Rates
  • Open-Drain Outputs Directly Drive LEDs to 40-mA Maximum
  • Two Independent Banks of LED Drivers
  • Widely Programmable Blink Rates, Fade-ON and Fade-OFF Rates and Maximum Intensity
  • Outputs Not Used as LED Drivers Can Be Used as Regular General-Purpose Open-Drain Outputs
  • 16 Steps of Maximum Intensity Control from Fully-OFF to Fully-ON States
  • Smooth Perceived Transitions for Fade-ON and Fade-OFF
  • Operating Power-Supply Voltage Range of 1.65 V to 3.6 V
  • 5.5-V Tolerant Open-Drain Outputs
  • Low Standby Current With Shutdown Capability for Additional Power Savings
  • Programmed Through I2C Bus Interface Logic Compatible With SMBus
  • No Glitch on Power Up
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • Seven LED Driver Outputs: ON, OFF, Blinking, Fading at Programmable Rates
  • Open-Drain Outputs Directly Drive LEDs to 40-mA Maximum
  • Two Independent Banks of LED Drivers
  • Widely Programmable Blink Rates, Fade-ON and Fade-OFF Rates and Maximum Intensity
  • Outputs Not Used as LED Drivers Can Be Used as Regular General-Purpose Open-Drain Outputs
  • 16 Steps of Maximum Intensity Control from Fully-OFF to Fully-ON States
  • Smooth Perceived Transitions for Fade-ON and Fade-OFF
  • Operating Power-Supply Voltage Range of 1.65 V to 3.6 V
  • 5.5-V Tolerant Open-Drain Outputs
  • Low Standby Current With Shutdown Capability for Additional Power Savings
  • Programmed Through I2C Bus Interface Logic Compatible With SMBus
  • No Glitch on Power Up
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

This 7-bit LED dimmer for the two-line bidirectional bus (I2C) is designed to control (or dim) LEDs through the I2C interface. Without this device, the microcontroller must be actively involved in turning on and off the LEDs (per the required dimming rate), which uses valuable processor time. The TCA6507 alleviates this issue by limiting the number of operations required by the processor in blinking LEDs and helps to create a more efficient system. The TCA6507 handles all pulse width modulation (PWM) logic, allowing the processor to use its cycles for more important tasks.

This 7-bit LED dimmer for the two-line bidirectional bus (I2C) is designed to control (or dim) LEDs through the I2C interface. Without this device, the microcontroller must be actively involved in turning on and off the LEDs (per the required dimming rate), which uses valuable processor time. The TCA6507 alleviates this issue by limiting the number of operations required by the processor in blinking LEDs and helps to create a more efficient system. The TCA6507 handles all pulse width modulation (PWM) logic, allowing the processor to use its cycles for more important tasks.
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Technical documentation

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Type Title Date
* Data sheet TCA6507 Low-Voltage 7-Bit I2C and SMBus LED Driver With Intensity Control and Shutdown datasheet (Rev. D) PDF | HTML 21 Feb 2017
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Certificate TCA6507EVM EU RoHS Declaration of Conformity (DoC) 11 Apr 2023
EVM User's guide TCA6507EVM User's Guide PDF | HTML 22 Jul 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide I2C Infographic Flyer 03 Dec 2015
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 May 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML 13 Feb 2015
Product overview TCA6507 - Low-Voltage 7-Bit I2C 27 Aug 2008
Application note Programming Fun Lights With TI's TCA6507 30 Nov 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TCA6507EVM — TCA6507 7-bit pulse wave modulation LED driver evaluation module

The TCA6507 EVM comes equipped with an RGB LED and 4 green LEDs to test the capabilities of the device. There is an onboard level shifter for translating between different logic levels of the host and TCA6507.

User guide: PDF | HTML
Not available on TI.com
Driver or library

TCA6507SW-LINUX — Linux Driver for TCA6507

The Linux driver supports the TCA6507 LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tca6507

 

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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The purpose of this reference design is to provide hardware and software tools that can be used as reference for audio systems. The new revision of the PurePath™ Console Motherboard (Rev F) adds stand-alone self-booting capabilities to allow making compelling demos with any evaluation module (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 14 Ultra Librarian
X2QFN (RUE) 12 Ultra Librarian
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