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CAT9532 - 16-bit Programmable LED Dimmer

Description

The CAT9532 is a CMOS device that provides 16

bit parallel input/output port expander optimized for LED dimming control.

The CAT9532 outputs can drive directly 16 LEDs in parallel.

Each individual LED may be turned ON, OFF, or blinking at one of two programmable rates.

Features

  • 16 LED Drivers with Dimming Control.
  • 256 Brightness Steps.
  • 16 Open Drain Outputs Drive 25 mA Each.
  • 2 Selectable Programmable Blink Rates:.
  • Frequency: 0.593 Hz to 152 Hz.
  • Duty Cycle: 0% to 99.6%.
  • I/Os can be Used as GPIOs.
  • 400 kHz I2C Bus Compatible.
  • 2.3 V to 5.5 V Operation.
  • 5 V Tolerant I/Os.
  • Active Low Reset Input.
  • 24.
  • Lead TSSOP and 24.
  • pad TQFN (4 x 4 mm) Packages.

📥 Download Datasheet

Datasheet Details

Part number CAT9532
Manufacturer onsemi
File Size 198.83 KB
Description 16-bit Programmable LED Dimmer
Datasheet download datasheet CAT9532 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CAT9532 16-bit Programmable LED Dimmer with I2C Interface Description The CAT9532 is a CMOS device that provides 16−bit parallel input/output port expander optimized for LED dimming control. The CAT9532 outputs can drive directly 16 LEDs in parallel. Each individual LED may be turned ON, OFF, or blinking at one of two programmable rates. The device provides a simple solution for dimming LEDs in 256 brightness steps for backlight and color mixing applications. The CAT9532 is suitable in I2C and SMBus compatible applications where it is necessary to limit the bus traffic or free−up the bus master’s timer. The CAT9532 contains an internal oscillator and two PWM signals that drive the LED outputs. The user can program the period and duty cycle for each individual PWM signal.
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