PCA9531D,112 NXP Semiconductors, PCA9531D,112 Datasheet - Page 13

• Manufacturer Part Number: PCA9531D,112
• Description: IC LED DRIVER RGB 16-SOIC
• Manufacturer: NXP Semiconductors
• Type: RGB LED Driverr

Specifications of PCA9531D,112

• Topology: Open Drain, PWM
• Number Of Outputs: 8
• Internal Driver: Yes
• Type - Primary: Backlight, LED Blinker
• Type - Secondary: RGB
• Frequency: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4003 - DEMO BOARD LED DIMMER568-3615 - DEMO BOARD I2C
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-3369-5; 935274731112; PCA9531D

NXP Semiconductors
9. Limiting values
PCA9531_6
Product data sheet
8.2 Programming example
The following example will show how to set LED0 to LED3 on. It will then set LED4 and
LED5 to blink at 1 Hz at a 50 % duty cycle. LED6 and LED7 will be set to be dimmed at
25 % of their maximum brightness (duty cycle = 25 %).
Table 10.
Table 11.
In accordance with the Absolute Maximum Rating System (IEC 60134).
Program sequence
START
PCA9531 address with A0 to A2 = LOW
PSC0 subaddress + Auto-Increment
Set prescaler PSC0 to achieve a period of 1 second:
PSC0 = 151
Set PWM0 duty cycle to 50 %:
PWM0 = 128
Set prescaler PCS1 to dim at maximum frequency:
PSC1 = 0
Set PWM1 output duty cycle to 25 %:
PWM1 = 64
Set LED0 to LED3 on
Set LED4 and LED5 to PWM0, and LED6 or LED7 to PWM1
STOP
Symbol
V
V
I
I
P
T
T
O(LEDn)
SS
stg
amb
DD
I/O
tot
Blink period
PWM0
-----------------
Blink period
PWM1
-----------------
256
256
=
=
Programming PCA9531
Limiting values
Parameter
supply voltage
voltage on an input/output pin
output current on pin LEDn
ground supply current
total power dissipation
storage temperature
ambient temperature
0.5
0.25
=
=
1
max
=
Rev. 06 — 19 February 2009
PSC0
----------------------- -
152
+
1
Conditions
operating
Min
V
-
-
-
8-bit I
0.5
65
40
SS
0.5
2
C-bus LED dimmer
PCA9531
© NXP B.V. 2009. All rights reserved.
Max
+6.0
5.5
200
400
+150
+85
I
S
C0h
11h
97h
80h
00h
40h
55h
FAh
P
25
2
C-bus
13 of 27
Unit
V
V
mA
mA
mW
C
C