PCA9531D,112 NXP Semiconductors, PCA9531D,112 Datasheet - Page 7

IC LED DRIVER RGB 16-SOIC

PCA9531D,112

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

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
PCA9531_6
Product data sheet
6.3.2 PCS0 - Frequency Prescaler 0
6.3.3 PWM0 - Pulse Width Modulation 0
6.3.4 PCS1 - Frequency Prescaler 1
6.3.5 PWM1 - Pulse Width Modulation 1
PSC0 is used to program the period of the PWM output.
The period of BLINK0 = (PSC0 + 1) / 152.
Table 5.
The PWM0 register determines the duty cycle of BLINK0. The outputs are LOW (LED on)
when the count is less than the value in PWM0 and HIGH (LED off) when it is greater. If
PWM0 is programmed with 00h, then the PWM0 output is always HIGH (LED off).
The duty cycle of BLINK0 = PWM0 / 256.
Table 6.
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 152.
Table 7.
The PWM1 register determines the duty cycle of BLINK1. The outputs are LOW (LED on)
when the count is less than the value in PWM1 and HIGH (LED off) when it is greater. If
PWM1 is programmed with 00h, then the PWM1 output is always HIGH (LED off).
The duty cycle of BLINK1 = PWM1 / 256.
Table 8.
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
PSC0 - Frequency Prescaler 0 register description
PSC0[7]
PWM0 - Pulse Width Modulation 0 register description
PSC1 - Frequency Prescaler 1 register description
PSC1[7]
PWM1 - Pulse Width Modulation 1 register description
PWM0
PWM1
[7]
[7]
7
1
7
1
7
0
7
1
PSC0[6]
PSC1[6]
Rev. 06 — 19 February 2009
PWM0
PWM1
[6]
[6]
6
1
6
0
6
0
6
0
PSC0[5]
PSC1[5]
PWM0
PWM1
[5]
[5]
5
1
5
0
5
0
5
0
PSC0[4]
PSC1[4]
PWM0
PWM1
[4]
[4]
4
1
4
0
4
0
4
0
PSC0[3]
PSC1[3]
PWM0
PWM1
[3]
[3]
3
1
3
0
3
0
3
0
PSC0[2]
PSC1[2]
PWM0
PWM1
8-bit I
[2]
[2]
2
2
0
2
2
0
1
0
2
C-bus LED dimmer
PCA9531
PSC0[1]
PSC1[1]
© NXP B.V. 2009. All rights reserved.
PWM0
PWM1
[1]
[1]
1
1
1
0
1
0
1
0
PSC0[0]
PSC1[0]
PWM0
PWM1
[0]
[0]
0
1
0
0
0
0
0
0
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