CAT9532 16-bit Programmable LED 2 Dimmer with I C Interface Description The CAT9532 is a CMOS device that provides 16bit parallel input/output port expander optimized for LED dimming control. The www.onsemi.com 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 2 applications. The CAT9532 is suitable in I C and SMBus compatible applications where it is necessary to limit the bus traffic or freeup the bus masters timer. TSSOP24 The CAT9532 contains an internal oscillator and two PWM signals Y SUFFIX that drive the LED outputs. The user can program the period and duty CASE 948AR cycle for each individual PWM signal. After the initial setup 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 TQFN24 maximum output current of 25 mA. The total current sunk by all I/Os HV6 SUFFIX must not exceed 400 mA. CASE 510AG Features ORDERING INFORMATION 16 LED Drivers with Dimming Control See detailed ordering and shipping information in the package 256 Brightness Steps dimensions section on page 14 of this data sheet. 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 2 400 kHz I C Bus Compatible 2.3 V to 5.5 V Operation 5 V Tolerant I/Os Active Low Reset Input 24Lead TSSOP and 24pad TQFN (4 x 4 mm) Packages These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant Applications Backlighting RGB Color Mixing Sensors Control Power Switches, Pushbuttons Alarm Systems Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: October, 2016 Rev. 5 CAT9532/DCAT9532 MARKING DIAGRAMS LAAC AB AXXX CAT9532YI YMCC 3YMXXX TQFN (HV6) TSSOP (Y) LAAC = Device Code A = Assembly Location A = Assembly Location XXX = Last Three Digits of B = Product Revision (Fixed as B) = Assembly Lot Number CAT9532Y = Device Code Y = Production Year (Last Digit) I = Temperature Range M = Production Month (19, O, N, D) 3 = Matte-Tin Lead Finish CC = Country Code Y = Production Year (Last Digit) = TH = Thailand M = Production Month (19, O, N, D) = MY = Malaysia XXX = Last Three Digits of = Assembly Lot Number A0 V 1 CC A1 SDA 1 LED0 RESET A2 SCL LED1 LED15 LED0 RESET LED2 LED14 LED1 LED15 LED2 LED3 LED13 LED14 LED3 LED13 LED4 LED12 LED4 LED12 LED5 LED11 LED5 LED11 LED6 LED10 LED7 LED9 V LED8 SS TSSOP (Y) TQFN (HV6) (Top View) (Top View) Figure 1. Pin Configurations 5 V 5 V 3 x 10 k RS0 RS1 RS11 V CC SDA SDA LED0 SCL SCL LED1 RESET RESET 2 CAT9532 I C/SMBus Master LED11 A2 LED12 A1 GPIOs A0 V LED15 SS Figure 2. Typical Application Circuit www.onsemi.com 2 LED6 A2 LED7 A1 V A0 SS LED8 V CC LED9 SDA LED10 SCL