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) (kHz) 400 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) (kHz) 400 Operating temperature range (C) -40 to 85
TSSOP (PW) 14 32 mm² 5 x 6.4 X2QFN (RUE) 12 3 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) 21 Feb 2017
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 30 Jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 May 2015
Application note I2C Bus Pull-Up Resistor Calculation 13 Feb 2015
More literature TCA6507 - Low-Voltage 7-Bit I2C 27 Aug 2008
Application note Programming Fun Lights With TI's TCA6507 30 Nov 2007

Design & development

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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

 

Linux Source Files

The files (...)

Simulation tool

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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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Package Pins Download
TSSOP (PW) 14 View options
X2QFN (RUE) 12 View options

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