PCA9533D/01,112 NXP Semiconductors, PCA9533D/01,112 Datasheet - Page 6

• Manufacturer Part Number: PCA9533D/01,112
• Description: IC LED DRIVER RGB 8-SOIC
• Manufacturer: NXP Semiconductors
• Type: RGB LED Driverr

Specifications of PCA9533D/01,112

• Package / Case: 8-SOIC (3.9mm Width)
• Topology: Open Drain, PWM
• Number Of Outputs: 4
• 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
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Low Level Output Current: 25 mA
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 550 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4003 - DEMO BOARD LED DIMMER568-3512 - DEMO BOARD UART TO I2C
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3372-5; 935274434112; PCA9533D/01

NXP Semiconductors
PCA9533_3
Product data sheet
6.3.4 PCS1 - Frequency Prescaler 1
6.3.5 PWM1 - Pulse Width Modulation 1
6.3.6 LS0 - LED selector
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 152.
Table 8.
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 9.
The LSn LED selector register determines the source of the LED data.
Table 10.
Legend: * default value.
Bit
Symbol
Default
Bit
Symbol
Default
Register
LS0
00 = output is set high-impedance (LED off; default)
01 = output is set LOW (LED on)
10 = output blinks at PWM0 rate
11 = output blinks at PWM1 rate
PSC1 - Frequency Prescaler 1 register description
PSC1[7]
PWM1 - Pulse Width Modulation 1 register description
LS0 - LED selector register bit description
PWM1
Bit
7:6
5:4
3:2
1:0
[7]
7
0
7
1
PSC1[6]
PWM1
Value
00*
00*
00*
00*
Rev. 03 — 27 April 2009
[6]
6
0
6
0
PSC1[5]
PWM1
[5]
5
0
5
0
Description
LED3 selected
LED2 selected
LED1 selected
LED0 selected
PSC1[4]
PWM1
[4]
4
0
4
0
PSC1[3]
PWM1
[3]
3
0
3
0
PSC1[2]
PWM1
4-bit I
[2]
2
2
0
0
2
C-bus LED dimmer
PCA9533
PSC1[1]
© NXP B.V. 2009. All rights reserved.
PWM1
[1]
1
0
1
0
PSC1[0]
PWM1
[0]
0
0
0
0
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