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PCA9633 4-Channel 8W Open Collector 8-Bit PWM FET Driver with I2C Interface — PCA9633 4-Channel 8W Open Collector 8-Bit PWM FET Driver with I2C Interface MCP23017 16-Channel 8W Open Collector FET Driver with I2C Interface MCP23017 16-Channel 8W Open Collector FET Driver with I2C Interface —

PCA9531 2-Channel 8-bit PWM with 8 Outputs & GPIO I2C LED Dimmer

$ 18.95

Features

  • 8 GPIO Channels for PWM or Digital Input/Output
  • 2-Channel PWM 256-Levels per Channel
  • Programmable PWM Prescaler
  • I2C 8-bit LED Dimmer
  • 256 Brightness Steps
  • Red/Green/Blue Color Mixing
  • Two Fully Programmable Blink Rates
  • 0x60 I2C Start Address

The PCA9531 is an 8-bit I2C bus PWM controller optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and backlight applications.

Three hardware address pins on the PCA9531 allow eight devices to operate on the same bus. The PCA9531 contains an internal oscillator with two user-programmable blink rates and duty cycles coupled to the output PWM. The initial setup sequence programs the two blink rates/duty cycles for each individual PWM. To blink LEDs at periods greater than 1.69 second the bus master (MCU, MPU, DSP, chipset, etc.) must send repeated commands to turn the LED on and off as is currently done when using normal I/O expanders like the NXP Semiconductors PCF8574 or PCA9554. The active LOW hardware reset pin (RESET) and Power-On Reset (POR) initializes the registers to their default state causing the bits to be set HIGH (LED off).

All I2C Mini Modules are designed to operate at 5VDC. Using a convenient 4-Pin plug, devices can be daisy-chained onto the I2C Bus, eliminating the need for soldering. Simply plug together the devices you need for your next automation application. Pull-up resistors are included with all Dcube Store master devices. If you are wiring in your own I2C port, on-board 4.7K jumper-selectable pull-up resistors are available for convenience purposes.

FREEĀ I2C cable included.

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