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PCA9532 Datasheet 16-bit I2c Led Dimmer

Manufacturer: NXP Semiconductors

Overview: INTEGRATED CIRCUITS PCA9532 16-bit I2C LED dimmer Product data Supersedes data of 2003 Feb 26 2003 May 02 Philips Semiconductors Philips Semiconductors Product data 16-bit I2C LED dimmer.

General Description

The PCA9532 is a 16-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.

The PCA9532 contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM.

The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking cannot be seen and then using the duty cycle to vary the amount of time the LED is on and thus the average current through the LED.

Key Features

  • 16 LED drivers (on, off, flashing at a programmable rate).
  • 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.625 and 160 Hz (6.4 seconds and 6.25 milliseconds).
  • 256 brightness steps.
  • Input/outputs not used as LED drivers can be used as regular GPIOs.
  • Internal oscillator requires no external components.
  • I2C-bus interface logic compatible with SMBus.
  • Internal power-on reset.
  • Noise filter on.

More Datasheets from NXP Semiconductors

Part Number Description
PCA9531 8-bit I2C LED dimmer
PCA9533 4-bit I2C LED dimmer
PCA9534 8-bit I2C and SMBus/ low power I/O port
PCA9535 16-bit SMBus
PCA9535C 16-bit SMBus
PCA9536 4-bit I2C and SMBus I/O port
PCA9537 4-bit I2C and SMBus low power I/O port
PCA9538 8-bit I2C and SMBus low power I/O port
PCA9539 16-bit I2C and SMBus low power I/O port
PCA9539R 16-bit I2C and SMBus low power I/O port

PCA9532 Distributor