CAT9532WI ON Semiconductor, CAT9532WI Datasheet

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CAT9532WI

Manufacturer Part Number
CAT9532WI
Description
LED DRIVER, 16BIT PROGRAM, 24SOIC
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT9532WI

Led Driver Application
Backlighting, Alarm Systems
No. Of Outputs
16
Output Current
25mA
Output Voltage
5.5V
Input Voltage
2.3V To 5.5V
Dimming Control Type
I2C
Operating Temperature
RoHS Compliant
Number Of Segments
16
Low Level Output Current
25 mA
Operating Supply Voltage
2.3 V to 5.5 V
Maximum Supply Current
550 uA
Maximum Power Dissipation
1 W
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-24
Minimum Operating Temperature
- 40 C
Lead Free Status / Rohs Status
 Details

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CAT9532WI
Manufacturer:
ON Semiconductor
Quantity:
135
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CAT9532WI
Manufacturer:
MICRON
Quantity:
51
Part Number:
CAT9532WI-T1G
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TYCO
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1 593
16-bit Programmable LED Dimmer with I
FEATURES
APPLICATIONS
For Ordering Information details, see page 16.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
* Catalyst Semiconductor is licensed by Philips Corporation to
– frequency: 0.593Hz to 152Hz
– duty cycle: 0% to 99.6%
16 LED drivers with dimming control
256 brightness steps
16 open drain outputs drive 25 mA each
2 selectable programmable blink rates:
I/Os can be used as GPIOs
400kHz I
2.3V to 5.5V operation
5V tolerant I/Os
Active low reset input
RoHS-compliant 24-Lead SOIC, TSSOP and
24-pad TQFN (4 x 4mm) packages
Backlighting
RGB color mixing
Sensors control
Power switches, push-buttons
Alarm systems
carry the I
2
2
C Protocol.
C bus compatible*
1
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 I
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.
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 25mA. The total current sunk by all I/Os must
not exceed 200mA.
TYPICAL APPLICATION CIRCUIT
I
Notes:
2
C/SMBus
RESET
Master
5 V
SDA
SCL
LED0 to LED11 are used as LED drivers
LED12 to LED15 are used as regular GPIOs
2
2
C Interface
C and SMBus compatible applications
After the initial set-up command to
3 x 10kΩ
SDA
SCL
RESET
A2
A1
A0
V
SS
CAT9532
V
CC
LED12
LED15
LED11
LED0
LED1
RS0
CAT9532
Doc. No. MD-9001 Rev. C
RS1
RS11
GPIOs
5 V

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CAT9532WI Summary of contents

Page 1

Programmable LED Dimmer with I FEATURES 16 LED drivers with dimming control 256 brightness steps 16 open drain outputs drive 25 mA each 2 selectable programmable blink rates: – frequency: 0.593Hz to 152Hz – duty cycle 99.6% ...

Page 2

CAT9532 PIN CONFIGURATION SOIC (W), TSSOP ( LED0 4 21 LED1 5 20 LED2 6 19 LED3 7 19 LED4 8 17 LED5 9 16 LED6 10 15 LED7 11 14 ...

Page 3

ABSOLUTE MAXIMUM RATINGS Parameters V with Respect to Ground CC Voltage on Any Pin with Respect to Ground DC Current on I/Os Supply Current Package Power Dissipation Capability (T Junction Temperature Storage Temperature Lead Soldering Temperature (10 seconds) Operating Ambient ...

Page 4

CAT9532 D.C. OPERATING CHARACTERISTICS V = 2.3 to 5.5V 0V -40ºC to +85ºC, unless otherwise specified Symbol Parameter Supplies V Supply Voltage CC I Supply Current CC I Standby Current stb Δ I ...

Page 5

A.C. CHARACTERISTICS V = 2.3V to 5.5V -40ºC to +85ºC, unless otherwise specified CC A Symbol Parameter f Clock Frequency SCL (2) t Input Filter Spike Suppression (SDA, SCL Clock Low Period LOW t Clock High ...

Page 6

CAT9532 AC TEST CONDITIONS Input Pulse Voltage Input Rise and Fall Times Input Reference Voltage Output Reference Voltage Output Load t F SCL t SU:STA SDA IN SDA OUT PIN DESCRIPTION SCL: Serial Clock The serial clock input clocks all ...

Page 7

FUNCTIONAL DESCRIPTION The CAT9532 is a 16-bit I/O bus expander that provides a programmable LED dimmer, controlled 2 through compatible serial interface. 2 The CAT9532 supports the I C Bus data transmission protocol. This Inter-Integrated Circuit Bus ...

Page 8

CAT9532 Acknowledge After a successful data transfer, each receiving device is required to generate an acknowledge. The acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. The SDA ...

Page 9

The Input Register 0 and Input Register 1 reflect the incoming logic levels of the I/O pins, regardless of whether the pin is defined as an input or an output. These registers are read only ports. Writes to the input ...

Page 10

CAT9532 Write Operations Data is transmitted to the CAT9532 registers using the write sequence shown in Figure 6. If the AI bit from the command byte is set to “1”, the CAT9532 internal registers sequentially. After sending data to one ...

Page 11

External Reset Operation 2 The CAT9532 registers and the I C state machine are initialized to their default state when the RESET input is held low for a minimum The external Reset W timing is shown in ...

Page 12

CAT9532 APPLICATION INFORMATION Programming Example The following programming sequence is an example how to set: – LED0 to LED3: ON – LED4 to LED7: Dimming at 30% brightness; Blink 1: 152Hz, duty cycle 30% – LED8 to LED11: Blink at ...

Page 13

PACKAGE OUTLINE DRAWINGS (1)(2) SOIC 24-Lead ( PIN#1 IDENTIFICATION TOP VIEW D A SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) ...

Page 14

CAT9532 (1)(2) TSSOP 24-Lead 4.4mm (Y) e TOP VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC ...

Page 15

TQFN 24-Lead 4 x 4mm (HV6) D PIN#1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A3 0.20 REF b 0.18 0.25 D 3.90 4.00 D2 2.40 – E 3.90 4.00 E2 2.40 – ...

Page 16

... The standard plated finish is Matte-Tin for SOIC and TSSOP packages. The standard plated finish is NiPdAu for TQFN package. (3) The device used in the above example is a CAT9532WI-T1 (SOIC, Industrial Temperature, Matte-Tin, Tape & Reel). (4) For additional temperature options, please contact your nearest Catalyst Semiconductor Sales office. ...

Page 17

REVISION HISTORY Date Rev. Reason 10/23/07 A Initial Issue 12/07/07 B Update Example of Ordering Information and Ordering Part Number Delete TQFN package in Matte-Tin 04/16/08 C Update Package Outline Drawing – TQFN 24-Pad 4 x 4mm Copyrights, Trademarks and ...

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