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

Datasheet: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming
Rev. 5 (197kB)
Product Overview
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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   Benefits
     
  • 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   End Products
  • Backlighting
  • RGB color mixing
  • Sensors control
  • Power switches, push-buttons
 
  • Alarm systems
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
STR-4LED-SOL-EVAL-EVK Active
Pb-free
Strata Enabled LED Evaluation Board with Buck, Boost, PWM and Linear Solutions
Avnet (2020-08-19) : 2
Availability & Samples
Specifications
Case Outlines
Application Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CAT9532HV6I-GT2 Active
Pb-free
Halide free
CAT9532 TQFN-24 510AG 1 260 Tape and Reel 2000 $1.3333
CAT9532YI-T2 Active
Pb-free
Halide free
CAT9532 TSSOP-24 948AR 1 260 Tape and Reel 2000 $1.2666
Market Leadtime (weeks) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : >10K
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 18,000

Product
Description
Pricing ($/Unit)
Compliance
Status
I/O
Cascadable
VCC Min (V)
VCC Max (V)
Interrupt Output
I/O Pullups
LED Blink/PWM
IO Min (mA)
Package Type
CAT9532HV6I-GT2  
 $1.3333 
Pb
H
 Active   
16
8 Slave ID Addresses
2.3
5.5
No
No
Yes
25
TQFN-24
CAT9532YI-T2  
 $1.2666 
Pb
H
 Active   
16
8 Slave ID Addresses
2.3
5.5
No
No
Yes
25
TSSOP-24
Case Outlines
948AR    510AG   
Packages
CAT9532: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming
CAT9532: I/O Port Expander, I2C / SMBus, 16-Bit, with LED Dimming
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