CAT9532: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming

Description: The CAT9532 is a CMOS device that provides 16-bit ...
  • 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. After the initial set-up command to program the Blink Rate 1 and Blink Rate 2 (frequency and duty cycle), only one command from the bus master is required to turn each individual open drain output ON, OFF, or cycle at Blink Rate 1 or Blink Rate 2. Each open drain LED output can provide a maximum output current of 25 mA. The total current sunk by all I/Os must not exceed 200 mA.
  • Features
  • I/Os can be Used as GPIOs - Suitable for control, or data transfer, and LED control
  • 16 LED Drivers with Dimming Control
  • 256 Brightness Steps
  • 16 Open Drain Outputs Drive 25 mA Each
  • 2 Selectable Programmable Blink Fates:
    - Frequency: 0.593 Hz to 152 Hz
    - Duty Cycle: 0% to 99.6%
  • 400 kHz I2C Bus Compatible
  • 2.3 V to 5.5 V Operation
  • 5.0 V Tolerant I/Os
  • Active Low Reset Input
  • Applications
  • Backlighting
  • RGB color mixing
  • Sensors control
  • Power switches, push-buttons
  • End Products
  • Alarm systems
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    CAT9532HV6I-GT2
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming
  • Package Type: TQFN-24
  • Package Case Outline: 510AG
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2000
  • Inventory

  • Market Leadtime (weeks):Contact Factory
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  • Digikey:>1K
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  • CAT9532YI-T2
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming
  • Package Type: TSSOP-24
  • Package Case Outline: 948AR
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2000
  • Inventory

  • Market Leadtime (weeks):13 to 16
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  • Digikey:>1K
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  • Packages
    Applications
    Specifications
  • I/O: 16 
  • Cascadable: 8 Slave ID Addresses 
  • VCC Min (V): 2.3 
  • VCC Max (V): 5.5 
  • Interrupt Output: No 
  • I/O Pullups: No 
  • LED Blink/PWM: Yes 
  • IO Min (mA): 25 
  • Package Type: TQFN-24  TSSOP-24 
  • ON Semiconductor Full Web Site