PCA9533 - 4-bit I2C LED dimmer

NXP

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Datasheet Details

Part number	PCA9533
Manufacturer	NXP
File Size	122.30 KB
Description	4-bit I2C LED dimmer
Datasheet	PCA9533_PhilipsSemiconductors.pdf

PCA9533 Product details

Description

PIN NUMBER 1 2 3 4 5 6 7 8 SYMBOL LED0 LED1 LED2 VSS LED3 SCL SDA VDD FUNCTION LED driver 0 LED driver 1 LED driver 2 Supply ground LED driver 3 Serial clock line Serial data line Supply voltage Packages offered: SO8, TSSOP8 (MSOP8) DESCRIPTION The PCA9533 is a 4-bit I2C 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 PCA9533 contains an internal oscillator with two user programmable blink r

Features

4 LED drivers (on, off, flashing at a programmable rate).
2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.591 Hz and 152 Hz (1.69 seconds and 6.58 milliseconds).
256 brightness steps.
Input/outputs not used as LED drivers can be used as regular GPIOs.
Internal oscillator requires no external components.
I2C interface logic compatible with SMBus.
Internal power-on reset.
Noise filter on S.

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Other Datasheets by NXP

PCA9531 - 8-bit I2C LED dimmer
PCA9532 - 16-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

Published: Mar 22, 2005 |